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authorDavid S. Miller <davem@davemloft.net>2015-04-13 18:18:05 -0400
committerDavid S. Miller <davem@davemloft.net>2015-04-13 18:18:05 -0400
commit6e8a9d9148b6dc2305fcaaf60550b81cbb6319c6 (patch)
tree60a235b136b1a3b2d0d7f3eef903fa13c319e1e9
parent789f558cfb3680aeb52de137418637f6b04b7d22 (diff)
parent01e97e6517053d7c0b9af5248e944a9209909cf5 (diff)
Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Al Viro says: ==================== netdev-related stuff in vfs.git There are several commits sitting in vfs.git that probably ought to go in via net-next.git. First of all, there's merge with vfs.git#iocb - that's Christoph's aio rework, which has triggered conflicts with the ->sendmsg() and ->recvmsg() patches a while ago. It's not so much Christoph's stuff that ought to be in net-next, as (pretty simple) conflict resolution on merge. The next chunk is switch to {compat_,}import_iovec/import_single_range - new safer primitives for initializing iov_iter. The primitives themselves come from vfs/git#iov_iter (and they are used quite a lot in vfs part of queue), conversion of net/socket.c syscalls belongs in net-next, IMO. Next there's afs and rxrpc stuff from dhowells. And then there's sanitizing kernel_sendmsg et.al. + missing inlined helper for "how much data is left in msg->msg_iter" - this stuff is used in e.g. cifs stuff, but it belongs in net-next. That pile is pullable from git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git for-davem I'll post the individual patches in there in followups; could you take a look and tell if everything in there is OK with you? ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--arch/s390/hypfs/inode.c2
-rw-r--r--crypto/algif_hash.c4
-rw-r--r--crypto/algif_skcipher.c6
-rw-r--r--drivers/char/mem.c2
-rw-r--r--drivers/char/tile-srom.c1
-rw-r--r--drivers/infiniband/hw/ipath/ipath_file_ops.c1
-rw-r--r--drivers/infiniband/hw/qib/qib_file_ops.c1
-rw-r--r--drivers/misc/mei/amthif.c1
-rw-r--r--drivers/misc/mei/main.c1
-rw-r--r--drivers/misc/mei/pci-me.c1
-rw-r--r--drivers/scsi/sg.c2
-rw-r--r--drivers/staging/unisys/include/timskmod.h1
-rw-r--r--drivers/usb/gadget/function/f_fs.c6
-rw-r--r--drivers/usb/gadget/legacy/inode.c6
-rw-r--r--drivers/vhost/net.c4
-rw-r--r--fs/9p/vfs_addr.c2
-rw-r--r--fs/affs/file.c2
-rw-r--r--fs/afs/misc.c16
-rw-r--r--fs/afs/rxrpc.c5
-rw-r--r--fs/afs/write.c1
-rw-r--r--fs/aio.c150
-rw-r--r--fs/bfs/inode.c1
-rw-r--r--fs/block_dev.c1
-rw-r--r--fs/btrfs/file.c2
-rw-r--r--fs/btrfs/inode.c2
-rw-r--r--fs/ceph/file.c3
-rw-r--r--fs/direct-io.c5
-rw-r--r--fs/ecryptfs/file.c7
-rw-r--r--fs/ext2/inode.c2
-rw-r--r--fs/ext3/inode.c2
-rw-r--r--fs/ext4/file.c2
-rw-r--r--fs/ext4/indirect.c2
-rw-r--r--fs/ext4/inode.c1
-rw-r--r--fs/ext4/page-io.c1
-rw-r--r--fs/f2fs/data.c2
-rw-r--r--fs/fat/inode.c1
-rw-r--r--fs/fuse/cuse.c2
-rw-r--r--fs/fuse/dev.c1
-rw-r--r--fs/fuse/file.c55
-rw-r--r--fs/fuse/fuse_i.h1
-rw-r--r--fs/gfs2/aops.c2
-rw-r--r--fs/gfs2/file.c1
-rw-r--r--fs/hfs/inode.c2
-rw-r--r--fs/hfsplus/inode.c2
-rw-r--r--fs/jfs/inode.c2
-rw-r--r--fs/nfs/direct.c4
-rw-r--r--fs/nfs/file.c1
-rw-r--r--fs/nilfs2/inode.c2
-rw-r--r--fs/ntfs/file.c1
-rw-r--r--fs/ntfs/inode.c1
-rw-r--r--fs/ocfs2/aops.c1
-rw-r--r--fs/ocfs2/aops.h2
-rw-r--r--fs/ocfs2/file.c8
-rw-r--r--fs/pipe.c1
-rw-r--r--fs/read_write.c35
-rw-r--r--fs/reiserfs/inode.c2
-rw-r--r--fs/splice.c1
-rw-r--r--fs/ubifs/file.c1
-rw-r--r--fs/udf/file.c4
-rw-r--r--fs/udf/inode.c2
-rw-r--r--fs/xfs/xfs_aops.c1
-rw-r--r--fs/xfs/xfs_file.c1
-rw-r--r--include/linux/aio.h70
-rw-r--r--include/linux/fs.h22
-rw-r--r--include/linux/net.h2
-rw-r--r--include/linux/socket.h5
-rw-r--r--include/linux/uio.h14
-rw-r--r--include/net/compat.h2
-rw-r--r--include/net/sock.h1
-rw-r--r--include/rxrpc/packet.h3
-rw-r--r--kernel/printk/printk.c4
-rw-r--r--kernel/sysctl.c1
-rw-r--r--lib/iov_iter.c57
-rw-r--r--mm/filemap.c1
-rw-r--r--mm/page_io.c3
-rw-r--r--mm/shmem.c2
-rw-r--r--net/compat.c18
-rw-r--r--net/core/datagram.c2
-rw-r--r--net/ipv4/raw.c1
-rw-r--r--net/ipv4/tcp.c8
-rw-r--r--net/rxrpc/ar-input.c23
-rw-r--r--net/rxrpc/ar-internal.h2
-rw-r--r--net/rxrpc/ar-local.c98
-rw-r--r--net/rxrpc/ar-output.c53
-rw-r--r--net/socket.c100
-rw-r--r--net/sunrpc/svcsock.c2
-rw-r--r--sound/core/pcm_native.c2
87 files changed, 494 insertions, 387 deletions
diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
index 99824ff8dd35..df7d8cbee377 100644
--- a/arch/s390/hypfs/inode.c
+++ b/arch/s390/hypfs/inode.c
@@ -21,7 +21,7 @@
#include <linux/module.h>
#include <linux/seq_file.h>
#include <linux/mount.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
#include <asm/ebcdic.h>
#include "hypfs.h"
diff --git a/crypto/algif_hash.c b/crypto/algif_hash.c
index 0a465e0f3012..1396ad0787fc 100644
--- a/crypto/algif_hash.c
+++ b/crypto/algif_hash.c
@@ -56,8 +56,8 @@ static int hash_sendmsg(struct socket *sock, struct msghdr *msg,
ctx->more = 0;
- while (iov_iter_count(&msg->msg_iter)) {
- int len = iov_iter_count(&msg->msg_iter);
+ while (msg_data_left(msg)) {
+ int len = msg_data_left(msg);
if (len > limit)
len = limit;
diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c
index 0aa02635ceda..945075292bc9 100644
--- a/crypto/algif_skcipher.c
+++ b/crypto/algif_skcipher.c
@@ -106,7 +106,7 @@ static void skcipher_async_cb(struct crypto_async_request *req, int err)
atomic_dec(&ctx->inflight);
skcipher_free_async_sgls(sreq);
kfree(req);
- aio_complete(iocb, err, err);
+ iocb->ki_complete(iocb, err, err);
}
static inline int skcipher_sndbuf(struct sock *sk)
@@ -641,7 +641,7 @@ static int skcipher_recvmsg_sync(struct socket *sock, struct msghdr *msg,
long copied = 0;
lock_sock(sk);
- while (iov_iter_count(&msg->msg_iter)) {
+ while (msg_data_left(msg)) {
sgl = list_first_entry(&ctx->tsgl,
struct skcipher_sg_list, list);
sg = sgl->sg;
@@ -655,7 +655,7 @@ static int skcipher_recvmsg_sync(struct socket *sock, struct msghdr *msg,
goto unlock;
}
- used = min_t(unsigned long, ctx->used, iov_iter_count(&msg->msg_iter));
+ used = min_t(unsigned long, ctx->used, msg_data_left(msg));
used = af_alg_make_sg(&ctx->rsgl, &msg->msg_iter, used);
err = used;
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 297110c12635..9c4fd7a8e2e5 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -26,7 +26,7 @@
#include <linux/pfn.h>
#include <linux/export.h>
#include <linux/io.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
#include <linux/uaccess.h>
diff --git a/drivers/char/tile-srom.c b/drivers/char/tile-srom.c
index 02e76ac6d282..69f6b4acc377 100644
--- a/drivers/char/tile-srom.c
+++ b/drivers/char/tile-srom.c
@@ -27,7 +27,6 @@
#include <linux/types.h> /* size_t */
#include <linux/proc_fs.h>
#include <linux/fcntl.h> /* O_ACCMODE */
-#include <linux/aio.h>
#include <linux/pagemap.h>
#include <linux/hugetlb.h>
#include <linux/uaccess.h>
diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c
index 6d7f453b4d05..aed8afee56da 100644
--- a/drivers/infiniband/hw/ipath/ipath_file_ops.c
+++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c
@@ -40,7 +40,6 @@
#include <linux/slab.h>
#include <linux/highmem.h>
#include <linux/io.h>
-#include <linux/aio.h>
#include <linux/jiffies.h>
#include <linux/cpu.h>
#include <asm/pgtable.h>
diff --git a/drivers/infiniband/hw/qib/qib_file_ops.c b/drivers/infiniband/hw/qib/qib_file_ops.c
index 41937c6f888a..14046f5a37fa 100644
--- a/drivers/infiniband/hw/qib/qib_file_ops.c
+++ b/drivers/infiniband/hw/qib/qib_file_ops.c
@@ -39,7 +39,6 @@
#include <linux/vmalloc.h>
#include <linux/highmem.h>
#include <linux/io.h>
-#include <linux/aio.h>
#include <linux/jiffies.h>
#include <asm/pgtable.h>
#include <linux/delay.h>
diff --git a/drivers/misc/mei/amthif.c b/drivers/misc/mei/amthif.c
index c4cb9a984a5f..40ea639fa413 100644
--- a/drivers/misc/mei/amthif.c
+++ b/drivers/misc/mei/amthif.c
@@ -19,7 +19,6 @@
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/fcntl.h>
-#include <linux/aio.h>
#include <linux/ioctl.h>
#include <linux/cdev.h>
#include <linux/list.h>
diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c
index 3c019c0e60eb..47680c84801c 100644
--- a/drivers/misc/mei/main.c
+++ b/drivers/misc/mei/main.c
@@ -22,7 +22,6 @@
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/fcntl.h>
-#include <linux/aio.h>
#include <linux/poll.h>
#include <linux/init.h>
#include <linux/ioctl.h>
diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c
index bd3039ab8f98..af44ee26075d 100644
--- a/drivers/misc/mei/pci-me.c
+++ b/drivers/misc/mei/pci-me.c
@@ -21,7 +21,6 @@
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/fcntl.h>
-#include <linux/aio.h>
#include <linux/pci.h>
#include <linux/poll.h>
#include <linux/ioctl.h>
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 2270bd51f9c2..d383f84869aa 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -33,7 +33,6 @@ static int sg_version_num = 30536; /* 2 digits for each component */
#include <linux/sched.h>
#include <linux/string.h>
#include <linux/mm.h>
-#include <linux/aio.h>
#include <linux/errno.h>
#include <linux/mtio.h>
#include <linux/ioctl.h>
@@ -51,6 +50,7 @@ static int sg_version_num = 30536; /* 2 digits for each component */
#include <linux/mutex.h>
#include <linux/atomic.h>
#include <linux/ratelimit.h>
+#include <linux/uio.h>
#include "scsi.h"
#include <scsi/scsi_dbg.h>
diff --git a/drivers/staging/unisys/include/timskmod.h b/drivers/staging/unisys/include/timskmod.h
index 4019a0d63645..52648d4d9922 100644
--- a/drivers/staging/unisys/include/timskmod.h
+++ b/drivers/staging/unisys/include/timskmod.h
@@ -46,7 +46,6 @@
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/fcntl.h>
-#include <linux/aio.h>
#include <linux/workqueue.h>
#include <linux/kthread.h>
#include <linux/seq_file.h>
diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index 175c9956cbe3..a12315a78248 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -23,6 +23,7 @@
#include <linux/export.h>
#include <linux/hid.h>
#include <linux/module.h>
+#include <linux/uio.h>
#include <asm/unaligned.h>
#include <linux/usb/composite.h>
@@ -655,9 +656,10 @@ static void ffs_user_copy_worker(struct work_struct *work)
unuse_mm(io_data->mm);
}
- aio_complete(io_data->kiocb, ret, ret);
+ io_data->kiocb->ki_complete(io_data->kiocb, ret, ret);
- if (io_data->ffs->ffs_eventfd && !io_data->kiocb->ki_eventfd)
+ if (io_data->ffs->ffs_eventfd &&
+ !(io_data->kiocb->ki_flags & IOCB_EVENTFD))
eventfd_signal(io_data->ffs->ffs_eventfd, 1);
usb_ep_free_request(io_data->ep, io_data->req);
diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c
index 200f9a584064..662ef2c1c62b 100644
--- a/drivers/usb/gadget/legacy/inode.c
+++ b/drivers/usb/gadget/legacy/inode.c
@@ -26,6 +26,7 @@
#include <linux/poll.h>
#include <linux/mmu_context.h>
#include <linux/aio.h>
+#include <linux/uio.h>
#include <linux/device.h>
#include <linux/moduleparam.h>
@@ -469,7 +470,7 @@ static void ep_user_copy_worker(struct work_struct *work)
ret = -EFAULT;
/* completing the iocb can drop the ctx and mm, don't touch mm after */
- aio_complete(iocb, ret, ret);
+ iocb->ki_complete(iocb, ret, ret);
kfree(priv->buf);
kfree(priv->to_free);
@@ -497,7 +498,8 @@ static void ep_aio_complete(struct usb_ep *ep, struct usb_request *req)
kfree(priv);
iocb->private = NULL;
/* aio_complete() reports bytes-transferred _and_ faults */
- aio_complete(iocb, req->actual ? req->actual : req->status,
+
+ iocb->ki_complete(iocb, req->actual ? req->actual : req->status,
req->status);
} else {
/* ep_copy_to_user() won't report both; we hide some faults */
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index 18f05bff8826..7d137a43cc86 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -357,13 +357,13 @@ static void handle_tx(struct vhost_net *net)
iov_iter_init(&msg.msg_iter, WRITE, vq->iov, out, len);
iov_iter_advance(&msg.msg_iter, hdr_size);
/* Sanity check */
- if (!iov_iter_count(&msg.msg_iter)) {
+ if (!msg_data_left(&msg)) {
vq_err(vq, "Unexpected header len for TX: "
"%zd expected %zd\n",
len, hdr_size);
break;
}
- len = iov_iter_count(&msg.msg_iter);
+ len = msg_data_left(&msg);
zcopy_used = zcopy && len >= VHOST_GOODCOPY_LEN
&& (nvq->upend_idx + 1) % UIO_MAXIOV !=
diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c
index eb14e055ea83..ff1a5bac4200 100644
--- a/fs/9p/vfs_addr.c
+++ b/fs/9p/vfs_addr.c
@@ -33,7 +33,7 @@
#include <linux/pagemap.h>
#include <linux/idr.h>
#include <linux/sched.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
diff --git a/fs/affs/file.c b/fs/affs/file.c
index a91795e01a7f..3aa7eb66547e 100644
--- a/fs/affs/file.c
+++ b/fs/affs/file.c
@@ -12,7 +12,7 @@
* affs regular file handling primitives
*/
-#include <linux/aio.h>
+#include <linux/uio.h>
#include "affs.h"
static struct buffer_head *affs_get_extblock_slow(struct inode *inode, u32 ext);
diff --git a/fs/afs/misc.c b/fs/afs/misc.c
index 0dd4dafee10b..91ea1aa0d8b3 100644
--- a/fs/afs/misc.c
+++ b/fs/afs/misc.c
@@ -22,9 +22,12 @@
int afs_abort_to_error(u32 abort_code)
{
switch (abort_code) {
+ /* low errno codes inserted into abort namespace */
case 13: return -EACCES;
case 27: return -EFBIG;
case 30: return -EROFS;
+
+ /* VICE "special error" codes; 101 - 111 */
case VSALVAGE: return -EIO;
case VNOVNODE: return -ENOENT;
case VNOVOL: return -ENOMEDIUM;
@@ -36,11 +39,18 @@ int afs_abort_to_error(u32 abort_code)
case VOVERQUOTA: return -EDQUOT;
case VBUSY: return -EBUSY;
case VMOVED: return -ENXIO;
- case 0x2f6df0a: return -EWOULDBLOCK;
+
+ /* Unified AFS error table; ET "uae" == 0x2f6df00 */
+ case 0x2f6df00: return -EPERM;
+ case 0x2f6df01: return -ENOENT;
+ case 0x2f6df04: return -EIO;
+ case 0x2f6df0a: return -EAGAIN;
+ case 0x2f6df0b: return -ENOMEM;
case 0x2f6df0c: return -EACCES;
case 0x2f6df0f: return -EBUSY;
case 0x2f6df10: return -EEXIST;
case 0x2f6df11: return -EXDEV;
+ case 0x2f6df12: return -ENODEV;
case 0x2f6df13: return -ENOTDIR;
case 0x2f6df14: return -EISDIR;
case 0x2f6df15: return -EINVAL;
@@ -54,8 +64,12 @@ int afs_abort_to_error(u32 abort_code)
case 0x2f6df23: return -ENAMETOOLONG;
case 0x2f6df24: return -ENOLCK;
case 0x2f6df26: return -ENOTEMPTY;
+ case 0x2f6df28: return -EWOULDBLOCK;
+ case 0x2f6df69: return -ENOTCONN;
+ case 0x2f6df6c: return -ETIMEDOUT;
case 0x2f6df78: return -EDQUOT;
+ /* RXKAD abort codes; from include/rxrpc/packet.h. ET "RXK" == 0x1260B00 */
case RXKADINCONSISTENCY: return -EPROTO;
case RXKADPACKETSHORT: return -EPROTO;
case RXKADLEVELFAIL: return -EKEYREJECTED;
diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c
index dbc732e9a5c0..3a57a1b0fb51 100644
--- a/fs/afs/rxrpc.c
+++ b/fs/afs/rxrpc.c
@@ -770,15 +770,12 @@ static int afs_deliver_cm_op_id(struct afs_call *call, struct sk_buff *skb,
void afs_send_empty_reply(struct afs_call *call)
{
struct msghdr msg;
- struct kvec iov[1];
_enter("");
- iov[0].iov_base = NULL;
- iov[0].iov_len = 0;
msg.msg_name = NULL;
msg.msg_namelen = 0;
- iov_iter_kvec(&msg.msg_iter, WRITE | ITER_KVEC, iov, 0, 0); /* WTF? */
+ iov_iter_kvec(&msg.msg_iter, WRITE | ITER_KVEC, NULL, 0, 0);
msg.msg_control = NULL;
msg.msg_controllen = 0;
msg.msg_flags = 0;
diff --git a/fs/afs/write.c b/fs/afs/write.c
index c13cb08964ed..0714abcd7f32 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -14,7 +14,6 @@
#include <linux/pagemap.h>
#include <linux/writeback.h>
#include <linux/pagevec.h>
-#include <linux/aio.h>
#include "internal.h"
static int afs_write_back_from_locked_page(struct afs_writeback *wb,
diff --git a/fs/aio.c b/fs/aio.c
index f8e52a1854c1..435ca29eca31 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -151,6 +151,38 @@ struct kioctx {
unsigned id;
};
+/*
+ * We use ki_cancel == KIOCB_CANCELLED to indicate that a kiocb has been either
+ * cancelled or completed (this makes a certain amount of sense because
+ * successful cancellation - io_cancel() - does deliver the completion to
+ * userspace).
+ *
+ * And since most things don't implement kiocb cancellation and we'd really like
+ * kiocb completion to be lockless when possible, we use ki_cancel to
+ * synchronize cancellation and completion - we only set it to KIOCB_CANCELLED
+ * with xchg() or cmpxchg(), see batch_complete_aio() and kiocb_cancel().
+ */
+#define KIOCB_CANCELLED ((void *) (~0ULL))
+
+struct aio_kiocb {
+ struct kiocb common;
+
+ struct kioctx *ki_ctx;
+ kiocb_cancel_fn *ki_cancel;
+
+ struct iocb __user *ki_user_iocb; /* user's aiocb */
+ __u64 ki_user_data; /* user's data for completion */
+
+ struct list_head ki_list; /* the aio core uses this
+ * for cancellation */
+
+ /*
+ * If the aio_resfd field of the userspace iocb is not zero,
+ * this is the underlying eventfd context to deliver events to.
+ */
+ struct eventfd_ctx *ki_eventfd;
+};
+
/*------ sysctl variables----*/
static DEFINE_SPINLOCK(aio_nr_lock);
unsigned long aio_nr; /* current system wide number of aio requests */
@@ -220,7 +252,7 @@ static int __init aio_setup(void)
if (IS_ERR(aio_mnt))
panic("Failed to create aio fs mount.");
- kiocb_cachep = KMEM_CACHE(kiocb, SLAB_HWCACHE_ALIGN|SLAB_PANIC);
+ kiocb_cachep = KMEM_CACHE(aio_kiocb, SLAB_HWCACHE_ALIGN|SLAB_PANIC);
kioctx_cachep = KMEM_CACHE(kioctx,SLAB_HWCACHE_ALIGN|SLAB_PANIC);
pr_debug("sizeof(struct page) = %zu\n", sizeof(struct page));
@@ -480,8 +512,9 @@ static int aio_setup_ring(struct kioctx *ctx)
#define AIO_EVENTS_FIRST_PAGE ((PAGE_SIZE - sizeof(struct aio_ring)) / sizeof(struct io_event))
#define AIO_EVENTS_OFFSET (AIO_EVENTS_PER_PAGE - AIO_EVENTS_FIRST_PAGE)
-void kiocb_set_cancel_fn(struct kiocb *req, kiocb_cancel_fn *cancel)
+void kiocb_set_cancel_fn(struct kiocb *iocb, kiocb_cancel_fn *cancel)
{
+ struct aio_kiocb *req = container_of(iocb, struct aio_kiocb, common);
struct kioctx *ctx = req->ki_ctx;
unsigned long flags;
@@ -496,7 +529,7 @@ void kiocb_set_cancel_fn(struct kiocb *req, kiocb_cancel_fn *cancel)
}
EXPORT_SYMBOL(kiocb_set_cancel_fn);
-static int kiocb_cancel(struct kiocb *kiocb)
+static int kiocb_cancel(struct aio_kiocb *kiocb)
{
kiocb_cancel_fn *old, *cancel;
@@ -514,7 +547,7 @@ static int kiocb_cancel(struct kiocb *kiocb)
cancel = cmpxchg(&kiocb->ki_cancel, old, KIOCB_CANCELLED);
} while (cancel != old);
- return cancel(kiocb);
+ return cancel(&kiocb->common);
}
static void free_ioctx(struct work_struct *work)
@@ -550,13 +583,13 @@ static void free_ioctx_reqs(struct percpu_ref *ref)
static void free_ioctx_users(struct percpu_ref *ref)
{
struct kioctx *ctx = container_of(ref, struct kioctx, users);
- struct kiocb *req;
+ struct aio_kiocb *req;
spin_lock_irq(&ctx->ctx_lock);
while (!list_empty(&ctx->active_reqs)) {
req = list_first_entry(&ctx->active_reqs,
- struct kiocb, ki_list);
+ struct aio_kiocb, ki_list);
list_del_init(&req->ki_list);
kiocb_cancel(req);
@@ -778,22 +811,6 @@ static int kill_ioctx(struct mm_struct *mm, struct kioctx *ctx,
return 0;
}
-/* wait_on_sync_kiocb:
- * Waits on the given sync kiocb to complete.
- */
-ssize_t wait_on_sync_kiocb(struct kiocb *req)
-{
- while (!req->ki_ctx) {
- set_current_state(TASK_UNINTERRUPTIBLE);
- if (req->ki_ctx)
- break;
- io_schedule();
- }
- __set_current_state(TASK_RUNNING);
- return req->ki_user_data;
-}
-EXPORT_SYMBOL(wait_on_sync_kiocb);
-
/*
* exit_aio: called when the last user of mm goes away. At this point, there is
* no way for any new requests to be submited or any of the io_* syscalls to be
@@ -948,9 +965,9 @@ static void user_refill_reqs_available(struct kioctx *ctx)
* Allocate a slot for an aio request.
* Returns NULL if no requests are free.
*/
-static inline struct kiocb *aio_get_req(struct kioctx *ctx)
+static inline struct aio_kiocb *aio_get_req(struct kioctx *ctx)
{
- struct kiocb *req;
+ struct aio_kiocb *req;
if (!get_reqs_available(ctx)) {
user_refill_reqs_available(ctx);
@@ -971,10 +988,10 @@ out_put:
return NULL;
}
-static void kiocb_free(struct kiocb *req)
+static void kiocb_free(struct aio_kiocb *req)
{
- if (req->ki_filp)
- fput(req->ki_filp);
+ if (req->common.ki_filp)
+ fput(req->common.ki_filp);
if (req->ki_eventfd != NULL)
eventfd_ctx_put(req->ki_eventfd);
kmem_cache_free(kiocb_cachep, req);
@@ -1010,8 +1027,9 @@ out:
/* aio_complete
* Called when the io request on the given iocb is complete.
*/
-void aio_complete(struct kiocb *iocb, long res, long res2)
+static void aio_complete(struct kiocb *kiocb, long res, long res2)
{
+ struct aio_kiocb *iocb = container_of(kiocb, struct aio_kiocb, common);
struct kioctx *ctx = iocb->ki_ctx;
struct aio_ring *ring;
struct io_event *ev_page, *event;
@@ -1025,13 +1043,7 @@ void aio_complete(struct kiocb *iocb, long res, long res2)
* ref, no other paths have a way to get another ref
* - the sync task helpfully left a reference to itself in the iocb
*/
- if (is_sync_kiocb(iocb)) {
- iocb->ki_user_data = res;
- smp_wmb();
- iocb->ki_ctx = ERR_PTR(-EXDEV);
- wake_up_process(iocb->ki_obj.tsk);
- return;
- }
+ BUG_ON(is_sync_kiocb(kiocb));
if (iocb->ki_list.next) {
unsigned long flags;
@@ -1057,7 +1069,7 @@ void aio_complete(struct kiocb *iocb, long res, long res2)
ev_page = kmap_atomic(ctx->ring_pages[pos / AIO_EVENTS_PER_PAGE]);
event = ev_page + pos % AIO_EVENTS_PER_PAGE;
- event->obj = (u64)(unsigned long)iocb->ki_obj.user;
+ event->obj = (u64)(unsigned long)iocb->ki_user_iocb;
event->data = iocb->ki_user_data;
event->res = res;
event->res2 = res2;
@@ -1066,7 +1078,7 @@ void aio_complete(struct kiocb *iocb, long res, long res2)
flush_dcache_page(ctx->ring_pages[pos / AIO_EVENTS_PER_PAGE]);
pr_debug("%p[%u]: %p: %p %Lx %lx %lx\n",
- ctx, tail, iocb, iocb->ki_obj.user, iocb->ki_user_data,
+ ctx, tail, iocb, iocb->ki_user_iocb, iocb->ki_user_data,
res, res2);
/* after flagging the request as done, we
@@ -1113,7 +1125,6 @@ void aio_complete(struct kiocb *iocb, long res, long res2)
percpu_ref_put(&ctx->reqs);
}
-EXPORT_SYMBOL(aio_complete);
/* aio_read_events_ring
* Pull an event off of the ioctx's event ring. Returns the number of
@@ -1344,12 +1355,13 @@ typedef ssize_t (rw_iter_op)(struct kiocb *, struct iov_iter *);
static ssize_t aio_setup_vectored_rw(struct kiocb *kiocb,
int rw, char __user *buf,
unsigned long *nr_segs,
+ size_t *len,
struct iovec **iovec,
bool compat)
{
ssize_t ret;
- *nr_segs = kiocb->ki_nbytes;
+ *nr_segs = *len;
#ifdef CONFIG_COMPAT
if (compat)
@@ -1364,21 +1376,22 @@ static ssize_t aio_setup_vectored_rw(struct kiocb *kiocb,
if (ret < 0)
return ret;
- /* ki_nbytes now reflect bytes instead of segs */
- kiocb->ki_nbytes = ret;
+ /* len now reflect bytes instead of segs */
+ *len = ret;
return 0;
}
static ssize_t aio_setup_single_vector(struct kiocb *kiocb,
int rw, char __user *buf,
unsigned long *nr_segs,
+ size_t len,
struct iovec *iovec)
{
- if (unlikely(!access_ok(!rw, buf, kiocb->ki_nbytes)))
+ if (unlikely(!access_ok(!rw, buf, len)))
return -EFAULT;
iovec->iov_base = buf;
- iovec->iov_len = kiocb->ki_nbytes;
+ iovec->iov_len = len;
*nr_segs = 1;
return 0;
}
@@ -1388,7 +1401,7 @@ static ssize_t aio_setup_single_vector(struct kiocb *kiocb,
* Performs the initial checks and io submission.
*/
static ssize_t aio_run_iocb(struct kiocb *req, unsigned opcode,
- char __user *buf, bool compat)
+ char __user *buf, size_t len, bool compat)
{
struct file *file = req->ki_filp;
ssize_t ret;
@@ -1423,21 +1436,21 @@ rw_common:
if (!rw_op && !iter_op)
return -EINVAL;
- ret = (opcode == IOCB_CMD_PREADV ||
- opcode == IOCB_CMD_PWRITEV)
- ? aio_setup_vectored_rw(req, rw, buf, &nr_segs,
- &iovec, compat)
- : aio_setup_single_vector(req, rw, buf, &nr_segs,
- iovec);
+ if (opcode == IOCB_CMD_PREADV || opcode == IOCB_CMD_PWRITEV)
+ ret = aio_setup_vectored_rw(req, rw, buf, &nr_segs,
+ &len, &iovec, compat);
+ else
+ ret = aio_setup_single_vector(req, rw, buf, &nr_segs,
+ len, iovec);
if (!ret)
- ret = rw_verify_area(rw, file, &req->ki_pos, req->ki_nbytes);
+ ret = rw_verify_area(rw, file, &req->ki_pos, len);
if (ret < 0) {
if (iovec != inline_vecs)
kfree(iovec);
return ret;
}
- req->ki_nbytes = ret;
+ len = ret;
/* XXX: move/kill - rw_verify_area()? */
/* This matches the pread()/pwrite() logic */
@@ -1450,7 +1463,7 @@ rw_common:
file_start_write(file);
if (iter_op) {
- iov_iter_init(&iter, rw, iovec, nr_segs, req->ki_nbytes);
+ iov_iter_init(&iter, rw, iovec, nr_segs, len);
ret = iter_op(req, &iter);
} else {
ret = rw_op(req, iovec, nr_segs, req->ki_pos);
@@ -1500,7 +1513,7 @@ rw_common:
static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
struct iocb *iocb, bool compat)
{
- struct kiocb *req;
+ struct aio_kiocb *req;
ssize_t ret;
/* enforce forwards compatibility on users */
@@ -1523,11 +1536,14 @@ static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
if (unlikely(!req))
return -EAGAIN;
- req->ki_filp = fget(iocb->aio_fildes);
- if (unlikely(!req->ki_filp)) {
+ req->common.ki_filp = fget(iocb->aio_fildes);
+ if (unlikely(!req->common.ki_filp)) {
ret = -EBADF;
goto out_put_req;
}
+ req->common.ki_pos = iocb->aio_offset;
+ req->common.ki_complete = aio_complete;
+ req->common.ki_flags = 0;
if (iocb->aio_flags & IOCB_FLAG_RESFD) {
/*
@@ -1542,6 +1558,8 @@ static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
req->ki_eventfd = NULL;
goto out_put_req;
}
+
+ req->common.ki_flags |= IOCB_EVENTFD;
}
ret = put_user(KIOCB_KEY, &user_iocb->aio_key);
@@ -1550,13 +1568,12 @@ static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
goto out_put_req;
}
- req->ki_obj.user = user_iocb;
+ req->ki_user_iocb = user_iocb;
req->ki_user_data = iocb->aio_data;
- req->ki_pos = iocb->aio_offset;
- req->ki_nbytes = iocb->aio_nbytes;
- ret = aio_run_iocb(req, iocb->aio_lio_opcode,
+ ret = aio_run_iocb(&req->common, iocb->aio_lio_opcode,
(char __user *)(unsigned long)iocb->aio_buf,
+ iocb->aio_nbytes,
compat);
if (ret)
goto out_put_req;
@@ -1643,10 +1660,10 @@ SYSCALL_DEFINE3(io_submit, aio_context_t, ctx_id, long, nr,
/* lookup_kiocb
* Finds a given iocb for cancellation.
*/
-static struct kiocb *lookup_kiocb(struct kioctx *ctx, struct iocb __user *iocb,
- u32 key)
+static struct aio_kiocb *
+lookup_kiocb(struct kioctx *ctx, struct iocb __user *iocb, u32 key)
{
- struct list_head *pos;
+ struct aio_kiocb *kiocb;
assert_spin_locked(&ctx->ctx_lock);
@@ -1654,9 +1671,8 @@ static struct kiocb *lookup_kiocb(struct kioctx *ctx, struct iocb __user *iocb,
return NULL;
/* TODO: use a hash or array, this sucks. */
- list_for_each(pos, &ctx->active_reqs) {
- struct kiocb *kiocb = list_kiocb(pos);
- if (kiocb->ki_obj.user == iocb)
+ list_for_each_entry(kiocb, &ctx->active_reqs, ki_list) {
+ if (kiocb->ki_user_iocb == iocb)
return kiocb;
}
return NULL;
@@ -1676,7 +1692,7 @@ SYSCALL_DEFINE3(io_cancel, aio_context_t, ctx_id, struct iocb __user *, iocb,
struct io_event __user *, result)
{
struct kioctx *ctx;
- struct kiocb *kiocb;
+ struct aio_kiocb *kiocb;
u32 key;
int ret;
diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
index 90bc079d9982..fdcb4d69f430 100644
--- a/fs/bfs/inode.c
+++ b/fs/bfs/inode.c
@@ -15,6 +15,7 @@
#include <linux/buffer_head.h>
#include <linux/vfs.h>
#include <linux/writeback.h>
+#include <linux/uio.h>
#include <asm/uaccess.h>
#include "bfs.h"
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 975266be67d3..2e522aed6584 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -27,7 +27,6 @@
#include <linux/namei.h>
#include <linux/log2.h>
#include <linux/cleancache.h>
-#include <linux/aio.h>
#include <asm/uaccess.h>
#include "internal.h"
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 30982bbd31c3..aee18f84e315 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -24,7 +24,6 @@
#include <linux/string.h>
#include <linux/backing-dev.h>
#include <linux/mpage.h>
-#include <linux/aio.h>
#include <linux/falloc.h>
#include <linux/swap.h>
#include <linux/writeback.h>
@@ -32,6 +31,7 @@
#include <linux/compat.h>
#include <linux/slab.h>
#include <linux/btrfs.h>
+#include <linux/uio.h>
#include "ctree.h"
#include "disk-io.h"
#include "transaction.h"
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index d2e732d7af52..686331f22b15 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -32,7 +32,6 @@
#include <linux/writeback.h>
#include <linux/statfs.h>
#include <linux/compat.h>
-#include <linux/aio.h>
#include <linux/bit_spinlock.h>
#include <linux/xattr.h>
#include <linux/posix_acl.h>
@@ -43,6 +42,7 @@
#include <linux/btrfs.h>
#include <linux/blkdev.h>
#include <linux/posix_acl_xattr.h>
+#include <linux/uio.h>
#include "ctree.h"
#include "disk-io.h"
#include "transaction.h"
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index d533075a823d..139f2fea91a0 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -7,7 +7,6 @@
#include <linux/mount.h>
#include <linux/namei.h>
#include <linux/writeback.h>
-#include <linux/aio.h>
#include <linux/falloc.h>
#include "super.h"
@@ -808,7 +807,7 @@ static ssize_t ceph_read_iter(struct kiocb *iocb, struct iov_iter *to)
{
struct file *filp = iocb->ki_filp;
struct ceph_file_info *fi = filp->private_data;
- size_t len = iocb->ki_nbytes;
+ size_t len = iov_iter_count(to);
struct inode *inode = file_inode(filp);
struct ceph_inode_info *ci = ceph_inode(inode);
struct page *pinned_page = NULL;
diff --git a/fs/direct-io.c b/fs/direct-io.c
index e181b6b2e297..6fb00e3f1059 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -37,7 +37,6 @@
#include <linux/uio.h>
#include <linux/atomic.h>
#include <linux/prefetch.h>
-#include <linux/aio.h>
/*
* How many user pages to map in one call to get_user_pages(). This determines
@@ -265,7 +264,7 @@ static ssize_t dio_complete(struct dio *dio, loff_t offset, ssize_t ret,
ret = err;
}
- aio_complete(dio->iocb, ret, 0);
+ dio->iocb->ki_complete(dio->iocb, ret, 0);
}
kmem_cache_free(dio_cache, dio);
@@ -1056,7 +1055,7 @@ static inline int drop_refcount(struct dio *dio)
* operation. AIO can if it was a broken operation described above or
* in fact if all the bios race to complete before we get here. In
* that case dio_complete() translates the EIOCBQUEUED into the proper
- * return code that the caller will hand to aio_complete().
+ * return code that the caller will hand to ->complete().
*
* This is managed by the bio_lock instead of being an atomic_t so that
* completion paths can drop their ref and use the remaining count to
diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c
index fd39bad6f1bd..79675089443d 100644
--- a/fs/ecryptfs/file.c
+++ b/fs/ecryptfs/file.c
@@ -31,7 +31,6 @@
#include <linux/security.h>
#include <linux/compat.h>
#include <linux/fs_stack.h>
-#include <linux/aio.h>
#include "ecryptfs_kernel.h"
/**
@@ -52,12 +51,6 @@ static ssize_t ecryptfs_read_update_atime(struct kiocb *iocb,
struct file *file = iocb->ki_filp;
rc = generic_file_read_iter(iocb, to);
- /*
- * Even though this is a async interface, we need to wait
- * for IO to finish to update atime
- */
- if (-EIOCBQUEUED == rc)
- rc = wait_on_sync_kiocb(iocb);
if (rc >= 0) {
path = ecryptfs_dentry_to_lower_path(file->f_path.dentry);
touch_atime(path);
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 6434bc000125..df9d6afbc5d5 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -31,7 +31,7 @@
#include <linux/mpage.h>
#include <linux/fiemap.h>
#include <linux/namei.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
#include "ext2.h"
#include "acl.h"
#include "xattr.h"
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 2c6ccc49ba27..db07ffbe7c85 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -27,7 +27,7 @@
#include <linux/writeback.h>
#include <linux/mpage.h>
#include <linux/namei.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
#include "ext3.h"
#include "xattr.h"
#include "acl.h"
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 33a09da16c9c..598abbbe6786 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -23,9 +23,9 @@
#include <linux/jbd2.h>
#include <linux/mount.h>
#include <linux/path.h>
-#include <linux/aio.h>
#include <linux/quotaops.h>
#include <linux/pagevec.h>
+#include <linux/uio.h>
#include "ext4.h"
#include "ext4_jbd2.h"
#include "xattr.h"
diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c
index 45fe924f82bc..740c7871c117 100644
--- a/fs/ext4/indirect.c
+++ b/fs/ext4/indirect.c
@@ -20,9 +20,9 @@
* (sct@redhat.com), 1993, 1998
*/
-#include <linux/aio.h>
#include "ext4_jbd2.h"
#include "truncate.h"
+#include <linux/uio.h>
#include <trace/events/ext4.h>
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 5cb9a212b86f..a3f451370bef 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -37,7 +37,6 @@
#include <linux/printk.h>
#include <linux/slab.h>
#include <linux/ratelimit.h>
-#include <linux/aio.h>
#include <linux/bitops.h>
#include "ext4_jbd2.h"
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index b24a2541a9ba..464984261e69 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -18,7 +18,6 @@
#include <linux/pagevec.h>
#include <linux/mpage.h>
#include <linux/namei.h>
-#include <linux/aio.h>
#include <linux/uio.h>
#include <linux/bio.h>
#include <linux/workqueue.h>
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 985ed023a750..497f8515d205 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -12,12 +12,12 @@
#include <linux/f2fs_fs.h>
#include <linux/buffer_head.h>
#include <linux/mpage.h>
-#include <linux/aio.h>
#include <linux/writeback.h>
#include <linux/backing-dev.h>
#include <linux/blkdev.h>
#include <linux/bio.h>
#include <linux/prefetch.h>
+#include <linux/uio.h>
#include "f2fs.h"
#include "node.h"
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 497c7c5263c7..8521207de229 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -19,7 +19,6 @@
#include <linux/mpage.h>
#include <linux/buffer_head.h>
#include <linux/mount.h>
-#include <linux/aio.h>
#include <linux/vfs.h>
#include <linux/parser.h>
#include <linux/uio.h>
diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c
index 28d0c7abba1c..b3fa05032234 100644
--- a/fs/fuse/cuse.c
+++ b/fs/fuse/cuse.c
@@ -38,7 +38,6 @@
#include <linux/device.h>
#include <linux/file.h>
#include <linux/fs.h>
-#include <linux/aio.h>
#include <linux/kdev_t.h>
#include <linux/kthread.h>
#include <linux/list.h>
@@ -48,6 +47,7 @@
#include <linux/slab.h>
#include <linux/stat.h>
#include <linux/module.h>
+#include <linux/uio.h>
#include "fuse_i.h"
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 39706c57ad3c..95a2797eef66 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -19,7 +19,6 @@
#include <linux/pipe_fs_i.h>
#include <linux/swap.h>
#include <linux/splice.h>
-#include <linux/aio.h>
MODULE_ALIAS_MISCDEV(FUSE_MINOR);
MODULE_ALIAS("devname:fuse");
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index c01ec3bdcfd8..ff102cbf16ea 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -15,8 +15,8 @@
#include <linux/module.h>
#include <linux/compat.h>
#include <linux/swap.h>
-#include <linux/aio.h>
#include <linux/falloc.h>
+#include <linux/uio.h>
static const struct file_operations fuse_direct_io_file_operations;
@@ -528,6 +528,17 @@ static void fuse_release_user_pages(struct fuse_req *req, int write)
}
}
+static ssize_t fuse_get_res_by_io(struct fuse_io_priv *io)
+{
+ if (io->err)
+ return io->err;
+
+ if (io->bytes >= 0 && io->write)
+ return -EIO;
+
+ return io->bytes < 0 ? io->size : io->bytes;
+}
+
/**
* In case of short read, the caller sets 'pos' to the position of
* actual end of fuse request in IO request. Otherwise, if bytes_requested
@@ -546,6 +557,7 @@ static void fuse_release_user_pages(struct fuse_req *req, int write)
*/
static void fuse_aio_complete(struct fuse_io_priv *io, int err, ssize_t pos)
{
+ bool is_sync = is_sync_kiocb(io->iocb);
int left;
spin_lock(&io->lock);
@@ -555,30 +567,24 @@ static void fuse_aio_complete(struct fuse_io_priv *io, int err, ssize_t pos)
io->bytes = pos;
left = --io->reqs;
+ if (!left && is_sync)
+ complete(io->done);
spin_unlock(&io->lock);
- if (!left) {
- long res;
+ if (!left && !is_sync) {
+ ssize_t res = fuse_get_res_by_io(io);
- if (io->err)
- res = io->err;
- else if (io->bytes >= 0 && io->write)
- res = -EIO;
- else {
- res = io->bytes < 0 ? io->size : io->bytes;
+ if (res >= 0) {
+ struct inode *inode = file_inode(io->iocb->ki_filp);
+ struct fuse_conn *fc = get_fuse_conn(inode);
+ struct fuse_inode *fi = get_fuse_inode(inode);
- if (!is_sync_kiocb(io->iocb)) {
- struct inode *inode = file_inode(io->iocb->ki_filp);
- struct fuse_conn *fc = get_fuse_conn(inode);
- struct fuse_inode *fi = get_fuse_inode(inode);
-
- spin_lock(&fc->lock);
- fi->attr_version = ++fc->attr_version;
- spin_unlock(&fc->lock);
- }
+ spin_lock(&fc->lock);
+ fi->attr_version = ++fc->attr_version;
+ spin_unlock(&fc->lock);
}
- aio_complete(io->iocb, res, 0);
+ io->iocb->ki_complete(io->iocb, res, 0);
kfree(io);
}
}
@@ -2801,6 +2807,7 @@ static ssize_t
fuse_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter,
loff_t offset)
{
+ DECLARE_COMPLETION_ONSTACK(wait);
ssize_t ret = 0;
struct file *file = iocb->ki_filp;
struct fuse_file *ff = file->private_data;
@@ -2852,6 +2859,9 @@ fuse_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter,
if (!is_sync_kiocb(iocb) && (offset + count > i_size) && rw == WRITE)
io->async = false;
+ if (io->async && is_sync_kiocb(iocb))
+ io->done = &wait;
+
if (rw == WRITE)
ret = __fuse_direct_write(io, iter, &pos);
else
@@ -2864,11 +2874,12 @@ fuse_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter,
if (!is_sync_kiocb(iocb))
return -EIOCBQUEUED;
- ret = wait_on_sync_kiocb(iocb);
- } else {
- kfree(io);
+ wait_for_completion(&wait);
+ ret = fuse_get_res_by_io(io);
}
+ kfree(io);
+
if (rw == WRITE) {
if (ret > 0)
fuse_write_update_size(inode, pos);
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index 1cdfb07c1376..7354dc142a50 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -263,6 +263,7 @@ struct fuse_io_priv {
int err;
struct kiocb *iocb;
struct file *file;
+ struct completion *done;
};
/**
diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c
index 4ad4f94edebe..fe6634d25d1d 100644
--- a/fs/gfs2/aops.c
+++ b/fs/gfs2/aops.c
@@ -20,7 +20,7 @@
#include <linux/swap.h>
#include <linux/gfs2_ondisk.h>
#include <linux/backing-dev.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
#include <trace/events/writeback.h>
#include "gfs2.h"
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 3e32bb8e2d7e..f6fc412b1100 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -25,7 +25,6 @@
#include <asm/uaccess.h>
#include <linux/dlm.h>
#include <linux/dlm_plock.h>
-#include <linux/aio.h>
#include <linux/delay.h>
#include "gfs2.h"
diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
index d0929bc81782..98d4ea45bb70 100644
--- a/fs/hfs/inode.c
+++ b/fs/hfs/inode.c
@@ -14,7 +14,7 @@
#include <linux/pagemap.h>
#include <linux/mpage.h>
#include <linux/sched.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
#include "hfs_fs.h"
#include "btree.h"
diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
index 0cf786f2d046..f541196d4ee9 100644
--- a/fs/hfsplus/inode.c
+++ b/fs/hfsplus/inode.c
@@ -14,7 +14,7 @@
#include <linux/pagemap.h>
#include <linux/mpage.h>
#include <linux/sched.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
#include "hfsplus_fs.h"
#include "hfsplus_raw.h"
diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c
index bd3df1ca3c9b..3197aed10614 100644
--- a/fs/jfs/inode.c
+++ b/fs/jfs/inode.c
@@ -22,8 +22,8 @@
#include <linux/buffer_head.h>
#include <linux/pagemap.h>
#include <linux/quotaops.h>
+#include <linux/uio.h>
#include <linux/writeback.h>
-#include <linux/aio.h>
#include "jfs_incore.h"
#include "jfs_inode.h"
#include "jfs_filsys.h"
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index e907c8cf732e..c3929fb2ab26 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -265,7 +265,7 @@ ssize_t nfs_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter, loff_t
return -EINVAL;
#else
- VM_BUG_ON(iocb->ki_nbytes != PAGE_SIZE);
+ VM_BUG_ON(iov_iter_count(iter) != PAGE_SIZE);
if (rw == READ)
return nfs_file_direct_read(iocb, iter, pos);
@@ -393,7 +393,7 @@ static void nfs_direct_complete(struct nfs_direct_req *dreq, bool write)
long res = (long) dreq->error;
if (!res)
res = (long) dreq->count;
- aio_complete(dreq->iocb, res, 0);
+ dreq->iocb->ki_complete(dreq->iocb, res, 0);
}
complete_all(&dreq->completion);
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index e679d24c39d3..37b15582e0de 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -26,7 +26,6 @@
#include <linux/nfs_mount.h>
#include <linux/mm.h>
#include <linux/pagemap.h>
-#include <linux/aio.h>
#include <linux/gfp.h>
#include <linux/swap.h>
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index 8b5969538f39..ab4987bc637f 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -26,7 +26,7 @@
#include <linux/mpage.h>
#include <linux/pagemap.h>
#include <linux/writeback.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
#include "nilfs.h"
#include "btnode.h"
#include "segment.h"
diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c
index 1da9b2d184dc..f16f2d8401fe 100644
--- a/fs/ntfs/file.c
+++ b/fs/ntfs/file.c
@@ -28,7 +28,6 @@
#include <linux/swap.h>
#include <linux/uio.h>
#include <linux/writeback.h>
-#include <linux/aio.h>
#include <asm/page.h>
#include <asm/uaccess.h>
diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c
index 898b9949d363..1d0c21df0d80 100644
--- a/fs/ntfs/inode.c
+++ b/fs/ntfs/inode.c
@@ -28,7 +28,6 @@
#include <linux/quotaops.h>
#include <linux/slab.h>
#include <linux/log2.h>
-#include <linux/aio.h>
#include "aops.h"
#include "attrib.h"
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index 44db1808cdb5..e1bf18c5d25e 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -29,6 +29,7 @@
#include <linux/mpage.h>
#include <linux/quotaops.h>
#include <linux/blkdev.h>
+#include <linux/uio.h>
#include <cluster/masklog.h>
diff --git a/fs/ocfs2/aops.h b/fs/ocfs2/aops.h
index 6cae155d54df..dd59599b022d 100644
--- a/fs/ocfs2/aops.h
+++ b/fs/ocfs2/aops.h
@@ -22,7 +22,7 @@
#ifndef OCFS2_AOPS_H
#define OCFS2_AOPS_H
-#include <linux/aio.h>
+#include <linux/fs.h>
handle_t *ocfs2_start_walk_page_trans(struct inode *inode,
struct page *page,
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 46e0d4e857c7..266845de2100 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -2280,7 +2280,7 @@ static ssize_t ocfs2_file_write_iter(struct kiocb *iocb,
file->f_path.dentry->d_name.name,
(unsigned int)from->nr_segs); /* GRRRRR */
- if (iocb->ki_nbytes == 0)
+ if (count == 0)
return 0;
appending = file->f_flags & O_APPEND ? 1 : 0;
@@ -2330,8 +2330,7 @@ relock:
}
can_do_direct = direct_io;
- ret = ocfs2_prepare_inode_for_write(file, ppos,
- iocb->ki_nbytes, appending,
+ ret = ocfs2_prepare_inode_for_write(file, ppos, count, appending,
&can_do_direct, &has_refcount);
if (ret < 0) {
mlog_errno(ret);
@@ -2339,8 +2338,7 @@ relock:
}
if (direct_io && !is_sync_kiocb(iocb))
- unaligned_dio = ocfs2_is_io_unaligned(inode, iocb->ki_nbytes,
- *ppos);
+ unaligned_dio = ocfs2_is_io_unaligned(inode, count, *ppos);
/*
* We can't complete the direct I/O as requested, fall back to
diff --git a/fs/pipe.c b/fs/pipe.c
index 21981e58e2a6..2d084f2d0b83 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -21,7 +21,6 @@
#include <linux/audit.h>
#include <linux/syscalls.h>
#include <linux/fcntl.h>
-#include <linux/aio.h>
#include <asm/uaccess.h>
#include <asm/ioctls.h>
diff --git a/fs/read_write.c b/fs/read_write.c
index 8e1b68786d66..99a6ef946d01 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -9,7 +9,6 @@
#include <linux/fcntl.h>
#include <linux/file.h>
#include <linux/uio.h>
-#include <linux/aio.h>
#include <linux/fsnotify.h>
#include <linux/security.h>
#include <linux/export.h>
@@ -343,13 +342,10 @@ ssize_t vfs_iter_read(struct file *file, struct iov_iter *iter, loff_t *ppos)
init_sync_kiocb(&kiocb, file);
kiocb.ki_pos = *ppos;
- kiocb.ki_nbytes = iov_iter_count(iter);
iter->type |= READ;
ret = file->f_op->read_iter(&kiocb, iter);
- if (ret == -EIOCBQUEUED)
- ret = wait_on_sync_kiocb(&kiocb);
-
+ BUG_ON(ret == -EIOCBQUEUED);
if (ret > 0)
*ppos = kiocb.ki_pos;
return ret;
@@ -366,13 +362,10 @@ ssize_t vfs_iter_write(struct file *file, struct iov_iter *iter, loff_t *ppos)
init_sync_kiocb(&kiocb, file);
kiocb.ki_pos = *ppos;
- kiocb.ki_nbytes = iov_iter_count(iter);
iter->type |= WRITE;
ret = file->f_op->write_iter(&kiocb, iter);
- if (ret == -EIOCBQUEUED)
- ret = wait_on_sync_kiocb(&kiocb);
-
+ BUG_ON(ret == -EIOCBQUEUED);
if (ret > 0)
*ppos = kiocb.ki_pos;
return ret;
@@ -426,11 +419,9 @@ ssize_t do_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *pp
init_sync_kiocb(&kiocb, filp);
kiocb.ki_pos = *ppos;
- kiocb.ki_nbytes = len;
ret = filp->f_op->aio_read(&kiocb, &iov, 1, kiocb.ki_pos);
- if (-EIOCBQUEUED == ret)
- ret = wait_on_sync_kiocb(&kiocb);
+ BUG_ON(ret == -EIOCBQUEUED);
*ppos = kiocb.ki_pos;
return ret;
}
@@ -446,12 +437,10 @@ ssize_t new_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *p
init_sync_kiocb(&kiocb, filp);
kiocb.ki_pos = *ppos;
- kiocb.ki_nbytes = len;
iov_iter_init(&iter, READ, &iov, 1, len);
ret = filp->f_op->read_iter(&kiocb, &iter);
- if (-EIOCBQUEUED == ret)
- ret = wait_on_sync_kiocb(&kiocb);
+ BUG_ON(ret == -EIOCBQUEUED);
*ppos = kiocb.ki_pos;
return ret;
}
@@ -510,11 +499,9 @@ ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t len, lof
init_sync_kiocb(&kiocb, filp);
kiocb.ki_pos = *ppos;
- kiocb.ki_nbytes = len;
ret = filp->f_op->aio_write(&kiocb, &iov, 1, kiocb.ki_pos);
- if (-EIOCBQUEUED == ret)
- ret = wait_on_sync_kiocb(&kiocb);
+ BUG_ON(ret == -EIOCBQUEUED);
*ppos = kiocb.ki_pos;
return ret;
}
@@ -530,12 +517,10 @@ ssize_t new_sync_write(struct file *filp, const char __user *buf, size_t len, lo
init_sync_kiocb(&kiocb, filp);
kiocb.ki_pos = *ppos;
- kiocb.ki_nbytes = len;
iov_iter_init(&iter, WRITE, &iov, 1, len);
ret = filp->f_op->write_iter(&kiocb, &iter);
- if (-EIOCBQUEUED == ret)
- ret = wait_on_sync_kiocb(&kiocb);
+ BUG_ON(ret == -EIOCBQUEUED);
*ppos = kiocb.ki_pos;
return ret;
}
@@ -719,12 +704,10 @@ static ssize_t do_iter_readv_writev(struct file *filp, int rw, const struct iove
init_sync_kiocb(&kiocb, filp);
kiocb.ki_pos = *ppos;
- kiocb.ki_nbytes = len;
iov_iter_init(&iter, rw, iov, nr_segs, len);
ret = fn(&kiocb, &iter);
- if (ret == -EIOCBQUEUED)
- ret = wait_on_sync_kiocb(&kiocb);
+ BUG_ON(ret == -EIOCBQUEUED);
*ppos = kiocb.ki_pos;
return ret;
}
@@ -737,11 +720,9 @@ static ssize_t do_sync_readv_writev(struct file *filp, const struct iovec *iov,
init_sync_kiocb(&kiocb, filp);
kiocb.ki_pos = *ppos;
- kiocb.ki_nbytes = len;
ret = fn(&kiocb, iov, nr_segs, kiocb.ki_pos);
- if (ret == -EIOCBQUEUED)
- ret = wait_on_sync_kiocb(&kiocb);
+ BUG_ON(ret == -EIOCBQUEUED);
*ppos = kiocb.ki_pos;
return ret;
}
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index e72401e1f995..9312b7842e03 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -18,7 +18,7 @@
#include <linux/writeback.h>
#include <linux/quotaops.h>
#include <linux/swap.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
int reiserfs_commit_write(struct file *f, struct page *page,
unsigned from, unsigned to);
diff --git a/fs/splice.c b/fs/splice.c
index 7968da96bebb..4bbfa95b5bfe 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -32,7 +32,6 @@
#include <linux/gfp.h>
#include <linux/socket.h>
#include <linux/compat.h>
-#include <linux/aio.h>
#include "internal.h"
/*
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index e627c0acf626..c3d15fe83403 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -50,7 +50,6 @@
*/
#include "ubifs.h"
-#include <linux/aio.h>
#include <linux/mount.h>
#include <linux/namei.h>
#include <linux/slab.h>
diff --git a/fs/udf/file.c b/fs/udf/file.c
index 08f3555fbeac..7f885cc8b0b7 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -34,7 +34,7 @@
#include <linux/errno.h>
#include <linux/pagemap.h>
#include <linux/buffer_head.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
#include "udf_i.h"
#include "udf_sb.h"
@@ -122,7 +122,7 @@ static ssize_t udf_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
struct file *file = iocb->ki_filp;
struct inode *inode = file_inode(file);
int err, pos;
- size_t count = iocb->ki_nbytes;
+ size_t count = iov_iter_count(from);
struct udf_inode_info *iinfo = UDF_I(inode);
mutex_lock(&inode->i_mutex);
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index a445d599098d..9c1fbd23913d 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -38,7 +38,7 @@
#include <linux/slab.h>
#include <linux/crc-itu-t.h>
#include <linux/mpage.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
#include "udf_i.h"
#include "udf_sb.h"
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 3a9b7a1b8704..4f8cdc59bc38 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -31,7 +31,6 @@
#include "xfs_bmap.h"
#include "xfs_bmap_util.h"
#include "xfs_bmap_btree.h"
-#include <linux/aio.h>
#include <linux/gfp.h>
#include <linux/mpage.h>
#include <linux/pagevec.h>
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index a2e1cb8a568b..f44212fae653 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -38,7 +38,6 @@
#include "xfs_icache.h"
#include "xfs_pnfs.h"
-#include <linux/aio.h>
#include <linux/dcache.h>
#include <linux/falloc.h>
#include <linux/pagevec.h>
diff --git a/include/linux/aio.h b/include/linux/aio.h
index d9c92daa3944..9eb42dbc5582 100644
--- a/include/linux/aio.h
+++ b/include/linux/aio.h
@@ -1,86 +1,23 @@
#ifndef __LINUX__AIO_H
#define __LINUX__AIO_H
-#include <linux/list.h>
-#include <linux/workqueue.h>
#include <linux/aio_abi.h>
-#include <linux/uio.h>
-#include <linux/rcupdate.h>
-
-#include <linux/atomic.h>
struct kioctx;
struct kiocb;
+struct mm_struct;
#define KIOCB_KEY 0
-/*
- * We use ki_cancel == KIOCB_CANCELLED to indicate that a kiocb has been either
- * cancelled or completed (this makes a certain amount of sense because
- * successful cancellation - io_cancel() - does deliver the completion to
- * userspace).
- *
- * And since most things don't implement kiocb cancellation and we'd really like
- * kiocb completion to be lockless when possible, we use ki_cancel to
- * synchronize cancellation and completion - we only set it to KIOCB_CANCELLED
- * with xchg() or cmpxchg(), see batch_complete_aio() and kiocb_cancel().
- */
-#define KIOCB_CANCELLED ((void *) (~0ULL))
-
typedef int (kiocb_cancel_fn)(struct kiocb *);
-struct kiocb {
- struct file *ki_filp;
- struct kioctx *ki_ctx; /* NULL for sync ops */
- kiocb_cancel_fn *ki_cancel;
- void *private;
-
- union {
- void __user *user;
- struct task_struct *tsk;
- } ki_obj;
-
- __u64 ki_user_data; /* user's data for completion */
- loff_t ki_pos;
- size_t ki_nbytes; /* copy of iocb->aio_nbytes */
-
- struct list_head ki_list; /* the aio core uses this
- * for cancellation */
-
- /*
- * If the aio_resfd field of the userspace iocb is not zero,
- * this is the underlying eventfd context to deliver events to.
- */
- struct eventfd_ctx *ki_eventfd;
-};
-
-static inline bool is_sync_kiocb(struct kiocb *kiocb)
-{
- return kiocb->ki_ctx == NULL;
-}
-
-static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp)
-{
- *kiocb = (struct kiocb) {
- .ki_ctx = NULL,
- .ki_filp = filp,
- .ki_obj.tsk = current,
- };
-}
-
/* prototypes */
#ifdef CONFIG_AIO
-extern ssize_t wait_on_sync_kiocb(struct kiocb *iocb);
-extern void aio_complete(struct kiocb *iocb, long res, long res2);
-struct mm_struct;
extern void exit_aio(struct mm_struct *mm);
extern long do_io_submit(aio_context_t ctx_id, long nr,
struct iocb __user *__user *iocbpp, bool compat);
void kiocb_set_cancel_fn(struct kiocb *req, kiocb_cancel_fn *cancel);
#else
-static inline ssize_t wait_on_sync_kiocb(struct kiocb *iocb) { return 0; }
-static inline void aio_complete(struct kiocb *iocb, long res, long res2) { }
-struct mm_struct;
static inline void exit_aio(struct mm_struct *mm) { }
static inline long do_io_submit(aio_context_t ctx_id, long nr,
struct iocb __user * __user *iocbpp,
@@ -89,11 +26,6 @@ static inline void kiocb_set_cancel_fn(struct kiocb *req,
kiocb_cancel_fn *cancel) { }
#endif /* CONFIG_AIO */
-static inline struct kiocb *list_kiocb(struct list_head *h)
-{
- return list_entry(h, struct kiocb, ki_list);
-}
-
/* for sysctl: */
extern unsigned long aio_nr;
extern unsigned long aio_max_nr;
diff --git a/include/linux/fs.h b/include/linux/fs.h
index f4131e8ead74..fdce1ddf230c 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -314,6 +314,28 @@ struct page;
struct address_space;
struct writeback_control;
+#define IOCB_EVENTFD (1 << 0)
+
+struct kiocb {
+ struct file *ki_filp;
+ loff_t ki_pos;
+ void (*ki_complete)(struct kiocb *iocb, long ret, long ret2);
+ void *private;
+ int ki_flags;
+};
+
+static inline bool is_sync_kiocb(struct kiocb *kiocb)
+{
+ return kiocb->ki_complete == NULL;
+}
+
+static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp)
+{
+ *kiocb = (struct kiocb) {
+ .ki_filp = filp,
+ };
+}
+
/*
* "descriptor" for what we're up to with a read.
* This allows us to use the same read code yet
diff --git a/include/linux/net.h b/include/linux/net.h
index e74114bcca68..738ea48be889 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -211,7 +211,7 @@ int sock_create(int family, int type, int proto, struct socket **res);
int sock_create_kern(int family, int type, int proto, struct socket **res);
int sock_create_lite(int family, int type, int proto, struct socket **res);
void sock_release(struct socket *sock);
-int sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t len);
+int sock_sendmsg(struct socket *sock, struct msghdr *msg);
int sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
int flags);
struct file *sock_alloc_file(struct socket *sock, int flags, const char *dname);
diff --git a/include/linux/socket.h b/include/linux/socket.h
index c9852ef7e317..5bf59c8493b7 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -139,6 +139,11 @@ static inline struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr
return __cmsg_nxthdr(__msg->msg_control, __msg->msg_controllen, __cmsg);
}
+static inline size_t msg_data_left(struct msghdr *msg)
+{
+ return iov_iter_count(&msg->msg_iter);
+}
+
/* "Socket"-level control message types: */
#define SCM_RIGHTS 0x01 /* rw: access rights (array of int) */
diff --git a/include/linux/uio.h b/include/linux/uio.h
index 71880299ed48..1f4a37f1f025 100644
--- a/include/linux/uio.h
+++ b/include/linux/uio.h
@@ -139,4 +139,18 @@ static inline void iov_iter_reexpand(struct iov_iter *i, size_t count)
size_t csum_and_copy_to_iter(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i);
size_t csum_and_copy_from_iter(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i);
+int import_iovec(int type, const struct iovec __user * uvector,
+ unsigned nr_segs, unsigned fast_segs,
+ struct iovec **iov, struct iov_iter *i);
+
+#ifdef CONFIG_COMPAT
+struct compat_iovec;
+int compat_import_iovec(int type, const struct compat_iovec __user * uvector,
+ unsigned nr_segs, unsigned fast_segs,
+ struct iovec **iov, struct iov_iter *i);
+#endif
+
+int import_single_range(int type, void __user *buf, size_t len,
+ struct iovec *iov, struct iov_iter *i);
+
#endif
diff --git a/include/net/compat.h b/include/net/compat.h
index 42a9c8431177..48103cf94e97 100644
--- a/include/net/compat.h
+++ b/include/net/compat.h
@@ -40,7 +40,7 @@ int compat_sock_get_timestampns(struct sock *, struct timespec __user *);
#define compat_mmsghdr mmsghdr
#endif /* defined(CONFIG_COMPAT) */
-ssize_t get_compat_msghdr(struct msghdr *, struct compat_msghdr __user *,
+int get_compat_msghdr(struct msghdr *, struct compat_msghdr __user *,
struct sockaddr __user **, struct iovec **);
asmlinkage long compat_sys_sendmsg(int, struct compat_msghdr __user *,
unsigned int);
diff --git a/include/net/sock.h b/include/net/sock.h
index bd6f523f2251..3a4898ec8c67 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -57,7 +57,6 @@
#include <linux/page_counter.h>
#include <linux/memcontrol.h>
#include <linux/static_key.h>
-#include <linux/aio.h>
#include <linux/sched.h>
#include <linux/filter.h>
diff --git a/include/rxrpc/packet.h b/include/rxrpc/packet.h
index f2902ef7ab75..4dce116bfd80 100644
--- a/include/rxrpc/packet.h
+++ b/include/rxrpc/packet.h
@@ -47,7 +47,8 @@ struct rxrpc_header {
#define RXRPC_PACKET_TYPE_CHALLENGE 6 /* connection security challenge (SRVR->CLNT) */
#define RXRPC_PACKET_TYPE_RESPONSE 7 /* connection secutity response (CLNT->SRVR) */
#define RXRPC_PACKET_TYPE_DEBUG 8 /* debug info request */
-#define RXRPC_N_PACKET_TYPES 9 /* number of packet types (incl type 0) */
+#define RXRPC_PACKET_TYPE_VERSION 13 /* version string request */
+#define RXRPC_N_PACKET_TYPES 14 /* number of packet types (incl type 0) */
uint8_t flags; /* packet flags */
#define RXRPC_CLIENT_INITIATED 0x01 /* signifies a packet generated by a client */
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index bb0635bd74f2..879edfc5ee52 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -32,7 +32,6 @@
#include <linux/security.h>
#include <linux/bootmem.h>
#include <linux/memblock.h>
-#include <linux/aio.h>
#include <linux/syscalls.h>
#include <linux/kexec.h>
#include <linux/kdb.h>
@@ -46,6 +45,7 @@
#include <linux/irq_work.h>
#include <linux/utsname.h>
#include <linux/ctype.h>
+#include <linux/uio.h>
#include <asm/uaccess.h>
@@ -521,7 +521,7 @@ static ssize_t devkmsg_write(struct kiocb *iocb, struct iov_iter *from)
int i;
int level = default_message_loglevel;
int facility = 1; /* LOG_USER */
- size_t len = iocb->ki_nbytes;
+ size_t len = iov_iter_count(from);
ssize_t ret = len;
if (len > LOG_LINE_MAX)
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index ce410bb9f2e1..4012336de30f 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -19,6 +19,7 @@
*/
#include <linux/module.h>
+#include <linux/aio.h>
#include <linux/mm.h>
#include <linux/swap.h>
#include <linux/slab.h>
diff --git a/lib/iov_iter.c b/lib/iov_iter.c
index 9d96e283520c..fc6e33f6b7f3 100644
--- a/lib/iov_iter.c
+++ b/lib/iov_iter.c
@@ -766,3 +766,60 @@ const void *dup_iter(struct iov_iter *new, struct iov_iter *old, gfp_t flags)
flags);
}
EXPORT_SYMBOL(dup_iter);
+
+int import_iovec(int type, const struct iovec __user * uvector,
+ unsigned nr_segs, unsigned fast_segs,
+ struct iovec **iov, struct iov_iter *i)
+{
+ ssize_t n;
+ struct iovec *p;
+ n = rw_copy_check_uvector(type, uvector, nr_segs, fast_segs,
+ *iov, &p);
+ if (n < 0) {
+ if (p != *iov)
+ kfree(p);
+ *iov = NULL;
+ return n;
+ }
+ iov_iter_init(i, type, p, nr_segs, n);
+ *iov = p == *iov ? NULL : p;
+ return 0;
+}
+EXPORT_SYMBOL(import_iovec);
+
+#ifdef CONFIG_COMPAT
+#include <linux/compat.h>
+
+int compat_import_iovec(int type, const struct compat_iovec __user * uvector,
+ unsigned nr_segs, unsigned fast_segs,
+ struct iovec **iov, struct iov_iter *i)
+{
+ ssize_t n;
+ struct iovec *p;
+ n = compat_rw_copy_check_uvector(type, uvector, nr_segs, fast_segs,
+ *iov, &p);
+ if (n < 0) {
+ if (p != *iov)
+ kfree(p);
+ *iov = NULL;
+ return n;
+ }
+ iov_iter_init(i, type, p, nr_segs, n);
+ *iov = p == *iov ? NULL : p;
+ return 0;
+}
+#endif
+
+int import_single_range(int rw, void __user *buf, size_t len,
+ struct iovec *iov, struct iov_iter *i)
+{
+ if (len > MAX_RW_COUNT)
+ len = MAX_RW_COUNT;
+ if (unlikely(!access_ok(!rw, buf, len)))
+ return -EFAULT;
+
+ iov->iov_base = buf;
+ iov->iov_len = len;
+ iov_iter_init(i, rw, iov, 1, len);
+ return 0;
+}
diff --git a/mm/filemap.c b/mm/filemap.c
index ad7242043bdb..876f4e6f3ed6 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -13,7 +13,6 @@
#include <linux/compiler.h>
#include <linux/fs.h>
#include <linux/uaccess.h>
-#include <linux/aio.h>
#include <linux/capability.h>
#include <linux/kernel_stat.h>
#include <linux/gfp.h>
diff --git a/mm/page_io.c b/mm/page_io.c
index e6045804c8d8..a96c8562d835 100644
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -20,8 +20,8 @@
#include <linux/buffer_head.h>
#include <linux/writeback.h>
#include <linux/frontswap.h>
-#include <linux/aio.h>
#include <linux/blkdev.h>
+#include <linux/uio.h>
#include <asm/pgtable.h>
static struct bio *get_swap_bio(gfp_t gfp_flags,
@@ -274,7 +274,6 @@ int __swap_writepage(struct page *page, struct writeback_control *wbc,
iov_iter_bvec(&from, ITER_BVEC | WRITE, &bv, 1, PAGE_SIZE);
init_sync_kiocb(&kiocb, swap_file);
kiocb.ki_pos = page_file_offset(page);
- kiocb.ki_nbytes = PAGE_SIZE;
set_page_writeback(page);
unlock_page(page);
diff --git a/mm/shmem.c b/mm/shmem.c
index cf2d0ca010bc..80b360c7bcd1 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -31,7 +31,7 @@
#include <linux/mm.h>
#include <linux/export.h>
#include <linux/swap.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
static struct vfsmount *shm_mnt;
diff --git a/net/compat.c b/net/compat.c
index c4b6b0f43d5d..5cfd26a0006f 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -31,10 +31,10 @@
#include <asm/uaccess.h>
#include <net/compat.h>
-ssize_t get_compat_msghdr(struct msghdr *kmsg,
- struct compat_msghdr __user *umsg,
- struct sockaddr __user **save_addr,
- struct iovec **iov)
+int get_compat_msghdr(struct msghdr *kmsg,
+ struct compat_msghdr __user *umsg,
+ struct sockaddr __user **save_addr,
+ struct iovec **iov)
{
compat_uptr_t uaddr, uiov, tmp3;
compat_size_t nr_segs;
@@ -81,13 +81,9 @@ ssize_t get_compat_msghdr(struct msghdr *kmsg,
kmsg->msg_iocb = NULL;
- err = compat_rw_copy_check_uvector(save_addr ? READ : WRITE,
- compat_ptr(uiov), nr_segs,
- UIO_FASTIOV, *iov, iov);
- if (err >= 0)
- iov_iter_init(&kmsg->msg_iter, save_addr ? READ : WRITE,
- *iov, nr_segs, err);
- return err;
+ return compat_import_iovec(save_addr ? READ : WRITE,
+ compat_ptr(uiov), nr_segs,
+ UIO_FASTIOV, iov, &kmsg->msg_iter);
}
/* Bleech... */
diff --git a/net/core/datagram.c b/net/core/datagram.c
index df493d68330c..b80fb91bb3f7 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -673,7 +673,7 @@ int skb_copy_and_csum_datagram_msg(struct sk_buff *skb,
if (!chunk)
return 0;
- if (iov_iter_count(&msg->msg_iter) < chunk) {
+ if (msg_data_left(msg) < chunk) {
if (__skb_checksum_complete(skb))
goto csum_error;
if (skb_copy_datagram_msg(skb, hlen, msg, chunk))
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index c0bb648fb2f9..561cd4b8fc6e 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -46,7 +46,6 @@
#include <linux/stddef.h>
#include <linux/slab.h>
#include <linux/errno.h>
-#include <linux/aio.h>
#include <linux/kernel.h>
#include <linux/export.h>
#include <linux/spinlock.h>
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 094a6822c71d..18e3a12eb1b2 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1119,7 +1119,7 @@ int tcp_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
sg = !!(sk->sk_route_caps & NETIF_F_SG);
- while (iov_iter_count(&msg->msg_iter)) {
+ while (msg_data_left(msg)) {
int copy = 0;
int max = size_goal;
@@ -1163,8 +1163,8 @@ new_segment:
}
/* Try to append data to the end of skb. */
- if (copy > iov_iter_count(&msg->msg_iter))
- copy = iov_iter_count(&msg->msg_iter);
+ if (copy > msg_data_left(msg))
+ copy = msg_data_left(msg);
/* Where to copy to? */
if (skb_availroom(skb) > 0) {
@@ -1221,7 +1221,7 @@ new_segment:
tcp_skb_pcount_set(skb, 0);
copied += copy;
- if (!iov_iter_count(&msg->msg_iter)) {
+ if (!msg_data_left(msg)) {
tcp_tx_timestamp(sk, skb);
goto out;
}
diff --git a/net/rxrpc/ar-input.c b/net/rxrpc/ar-input.c
index 481f89f93789..4505a691d88c 100644
--- a/net/rxrpc/ar-input.c
+++ b/net/rxrpc/ar-input.c
@@ -28,7 +28,7 @@
const char *rxrpc_pkts[] = {
"?00",
"DATA", "ACK", "BUSY", "ABORT", "ACKALL", "CHALL", "RESP", "DEBUG",
- "?09", "?10", "?11", "?12", "?13", "?14", "?15"
+ "?09", "?10", "?11", "?12", "VERSION", "?14", "?15"
};
/*
@@ -593,6 +593,20 @@ static void rxrpc_post_packet_to_conn(struct rxrpc_connection *conn,
rxrpc_queue_conn(conn);
}
+/*
+ * post endpoint-level events to the local endpoint
+ * - this includes debug and version messages
+ */
+static void rxrpc_post_packet_to_local(struct rxrpc_local *local,
+ struct sk_buff *skb)
+{
+ _enter("%p,%p", local, skb);
+
+ atomic_inc(&local->usage);
+ skb_queue_tail(&local->event_queue, skb);
+ rxrpc_queue_work(&local->event_processor);
+}
+
static struct rxrpc_connection *rxrpc_conn_from_local(struct rxrpc_local *local,
struct sk_buff *skb,
struct rxrpc_skb_priv *sp)
@@ -699,6 +713,11 @@ void rxrpc_data_ready(struct sock *sk)
goto bad_message;
}
+ if (sp->hdr.type == RXRPC_PACKET_TYPE_VERSION) {
+ rxrpc_post_packet_to_local(local, skb);
+ goto out;
+ }
+
if (sp->hdr.type == RXRPC_PACKET_TYPE_DATA &&
(sp->hdr.callNumber == 0 || sp->hdr.seq == 0))
goto bad_message;
@@ -731,6 +750,8 @@ void rxrpc_data_ready(struct sock *sk)
else
goto cant_route_call;
}
+
+out:
rxrpc_put_local(local);
return;
diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h
index 2fc1e659e5c9..aef1bd294e17 100644
--- a/net/rxrpc/ar-internal.h
+++ b/net/rxrpc/ar-internal.h
@@ -152,11 +152,13 @@ struct rxrpc_local {
struct work_struct destroyer; /* endpoint destroyer */
struct work_struct acceptor; /* incoming call processor */
struct work_struct rejecter; /* packet reject writer */
+ struct work_struct event_processor; /* endpoint event processor */
struct list_head services; /* services listening on this endpoint */
struct list_head link; /* link in endpoint list */
struct rw_semaphore defrag_sem; /* control re-enablement of IP DF bit */
struct sk_buff_head accept_queue; /* incoming calls awaiting acceptance */
struct sk_buff_head reject_queue; /* packets awaiting rejection */
+ struct sk_buff_head event_queue; /* endpoint event packets awaiting processing */
spinlock_t lock; /* access lock */
rwlock_t services_lock; /* lock for services list */
atomic_t usage;
diff --git a/net/rxrpc/ar-local.c b/net/rxrpc/ar-local.c
index 87f7135d238b..ca904ed5400a 100644
--- a/net/rxrpc/ar-local.c
+++ b/net/rxrpc/ar-local.c
@@ -13,16 +13,22 @@
#include <linux/net.h>
#include <linux/skbuff.h>
#include <linux/slab.h>
+#include <linux/udp.h>
+#include <linux/ip.h>
#include <net/sock.h>
#include <net/af_rxrpc.h>
+#include <generated/utsrelease.h>
#include "ar-internal.h"
+static const char rxrpc_version_string[65] = "linux-" UTS_RELEASE " AF_RXRPC";
+
static LIST_HEAD(rxrpc_locals);
DEFINE_RWLOCK(rxrpc_local_lock);
static DECLARE_RWSEM(rxrpc_local_sem);
static DECLARE_WAIT_QUEUE_HEAD(rxrpc_local_wq);
static void rxrpc_destroy_local(struct work_struct *work);
+static void rxrpc_process_local_events(struct work_struct *work);
/*
* allocate a new local
@@ -37,11 +43,13 @@ struct rxrpc_local *rxrpc_alloc_local(struct sockaddr_rxrpc *srx)
INIT_WORK(&local->destroyer, &rxrpc_destroy_local);
INIT_WORK(&local->acceptor, &rxrpc_accept_incoming_calls);
INIT_WORK(&local->rejecter, &rxrpc_reject_packets);
+ INIT_WORK(&local->event_processor, &rxrpc_process_local_events);
INIT_LIST_HEAD(&local->services);
INIT_LIST_HEAD(&local->link);
init_rwsem(&local->defrag_sem);
skb_queue_head_init(&local->accept_queue);
skb_queue_head_init(&local->reject_queue);
+ skb_queue_head_init(&local->event_queue);
spin_lock_init(&local->lock);
rwlock_init(&local->services_lock);
atomic_set(&local->usage, 1);
@@ -264,10 +272,12 @@ static void rxrpc_destroy_local(struct work_struct *work)
ASSERT(list_empty(&local->services));
ASSERT(!work_pending(&local->acceptor));
ASSERT(!work_pending(&local->rejecter));
+ ASSERT(!work_pending(&local->event_processor));
/* finish cleaning up the local descriptor */
rxrpc_purge_queue(&local->accept_queue);
rxrpc_purge_queue(&local->reject_queue);
+ rxrpc_purge_queue(&local->event_queue);
kernel_sock_shutdown(local->socket, SHUT_RDWR);
sock_release(local->socket);
@@ -308,3 +318,91 @@ void __exit rxrpc_destroy_all_locals(void)
_leave("");
}
+
+/*
+ * Reply to a version request
+ */
+static void rxrpc_send_version_request(struct rxrpc_local *local,
+ struct rxrpc_header *hdr,
+ struct sk_buff *skb)
+{
+ struct sockaddr_in sin;
+ struct msghdr msg;
+ struct kvec iov[2];
+ size_t len;
+ int ret;
+
+ _enter("");
+
+ sin.sin_family = AF_INET;
+ sin.sin_port = udp_hdr(skb)->source;
+ sin.sin_addr.s_addr = ip_hdr(skb)->saddr;
+
+ msg.msg_name = &sin;
+ msg.msg_namelen = sizeof(sin);
+ msg.msg_control = NULL;
+ msg.msg_controllen = 0;
+ msg.msg_flags = 0;
+
+ hdr->seq = 0;
+ hdr->serial = 0;
+ hdr->type = RXRPC_PACKET_TYPE_VERSION;
+ hdr->flags = RXRPC_LAST_PACKET | (~hdr->flags & RXRPC_CLIENT_INITIATED);
+ hdr->userStatus = 0;
+ hdr->_rsvd = 0;
+
+ iov[0].iov_base = hdr;
+ iov[0].iov_len = sizeof(*hdr);
+ iov[1].iov_base = (char *)rxrpc_version_string;
+ iov[1].iov_len = sizeof(rxrpc_version_string);
+
+ len = iov[0].iov_len + iov[1].iov_len;
+
+ _proto("Tx VERSION (reply)");
+
+ ret = kernel_sendmsg(local->socket, &msg, iov, 2, len);
+ if (ret < 0)
+ _debug("sendmsg failed: %d", ret);
+
+ _leave("");
+}
+
+/*
+ * Process event packets targetted at a local endpoint.
+ */
+static void rxrpc_process_local_events(struct work_struct *work)
+{
+ struct rxrpc_local *local = container_of(work, struct rxrpc_local, event_processor);
+ struct sk_buff *skb;
+ char v;
+
+ _enter("");
+
+ atomic_inc(&local->usage);
+
+ while ((skb = skb_dequeue(&local->event_queue))) {
+ struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
+
+ kdebug("{%d},{%u}", local->debug_id, sp->hdr.type);
+
+ switch (sp->hdr.type) {
+ case RXRPC_PACKET_TYPE_VERSION:
+ if (skb_copy_bits(skb, 0, &v, 1) < 0)
+ return;
+ _proto("Rx VERSION { %02x }", v);
+ if (v == 0)
+ rxrpc_send_version_request(local, &sp->hdr, skb);
+ break;
+
+ default:
+ /* Just ignore anything we don't understand */
+ break;
+ }
+
+ rxrpc_put_local(local);
+ rxrpc_free_skb(skb);
+ }
+
+ rxrpc_put_local(local);
+ _leave("");
+}
diff --git a/net/rxrpc/ar-output.c b/net/rxrpc/ar-output.c
index 09f584566e23..c0042807bfc6 100644
--- a/net/rxrpc/ar-output.c
+++ b/net/rxrpc/ar-output.c
@@ -542,11 +542,7 @@ static int rxrpc_send_data(struct rxrpc_sock *rx,
call->tx_pending = NULL;
copied = 0;
- if (len > iov_iter_count(&msg->msg_iter))
- len = iov_iter_count(&msg->msg_iter);
- while (len) {
- int copy;
-
+ do {
if (!skb) {
size_t size, chunk, max, space;
@@ -568,8 +564,8 @@ static int rxrpc_send_data(struct rxrpc_sock *rx,
max &= ~(call->conn->size_align - 1UL);
chunk = max;
- if (chunk > len && !more)
- chunk = len;
+ if (chunk > msg_data_left(msg) && !more)
+ chunk = msg_data_left(msg);
space = chunk + call->conn->size_align;
space &= ~(call->conn->size_align - 1UL);
@@ -612,23 +608,23 @@ static int rxrpc_send_data(struct rxrpc_sock *rx,
sp = rxrpc_skb(skb);
/* append next segment of data to the current buffer */
- copy = skb_tailroom(skb);
- ASSERTCMP(copy, >, 0);
- if (copy > len)
- copy = len;
- if (copy > sp->remain)
- copy = sp->remain;
-
- _debug("add");
- ret = skb_add_data(skb, &msg->msg_iter, copy);
- _debug("added");
- if (ret < 0)
- goto efault;
- sp->remain -= copy;
- skb->mark += copy;
- copied += copy;
-
- len -= copy;
+ if (msg_data_left(msg) > 0) {
+ int copy = skb_tailroom(skb);
+ ASSERTCMP(copy, >, 0);
+ if (copy > msg_data_left(msg))
+ copy = msg_data_left(msg);
+ if (copy > sp->remain)
+ copy = sp->remain;
+
+ _debug("add");
+ ret = skb_add_data(skb, &msg->msg_iter, copy);
+ _debug("added");
+ if (ret < 0)
+ goto efault;
+ sp->remain -= copy;
+ skb->mark += copy;
+ copied += copy;
+ }
/* check for the far side aborting the call or a network error
* occurring */
@@ -636,7 +632,8 @@ static int rxrpc_send_data(struct rxrpc_sock *rx,
goto call_aborted;
/* add the packet to the send queue if it's now full */
- if (sp->remain <= 0 || (!len && !more)) {
+ if (sp->remain <= 0 ||
+ (msg_data_left(msg) == 0 && !more)) {
struct rxrpc_connection *conn = call->conn;
uint32_t seq;
size_t pad;
@@ -666,7 +663,7 @@ static int rxrpc_send_data(struct rxrpc_sock *rx,
sp->hdr.serviceId = conn->service_id;
sp->hdr.flags = conn->out_clientflag;
- if (len == 0 && !more)
+ if (msg_data_left(msg) == 0 && !more)
sp->hdr.flags |= RXRPC_LAST_PACKET;
else if (CIRC_SPACE(call->acks_head, call->acks_tail,
call->acks_winsz) > 1)
@@ -682,10 +679,10 @@ static int rxrpc_send_data(struct rxrpc_sock *rx,
memcpy(skb->head, &sp->hdr,
sizeof(struct rxrpc_header));
- rxrpc_queue_packet(call, skb, !iov_iter_count(&msg->msg_iter) && !more);
+ rxrpc_queue_packet(call, skb, !msg_data_left(msg) && !more);
skb = NULL;
}
- }
+ } while (msg_data_left(msg) > 0);
success:
ret = copied;
diff --git a/net/socket.c b/net/socket.c
index 073809f4125f..5b0126234606 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -610,35 +610,27 @@ void __sock_tx_timestamp(const struct sock *sk, __u8 *tx_flags)
}
EXPORT_SYMBOL(__sock_tx_timestamp);
-static inline int sock_sendmsg_nosec(struct socket *sock, struct msghdr *msg,
- size_t size)
+static inline int sock_sendmsg_nosec(struct socket *sock, struct msghdr *msg)
{
- return sock->ops->sendmsg(sock, msg, size);
+ int ret = sock->ops->sendmsg(sock, msg, msg_data_left(msg));
+ BUG_ON(ret == -EIOCBQUEUED);
+ return ret;
}
-int sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
+int sock_sendmsg(struct socket *sock, struct msghdr *msg)
{
- int err = security_socket_sendmsg(sock, msg, size);
+ int err = security_socket_sendmsg(sock, msg,
+ msg_data_left(msg));
- return err ?: sock_sendmsg_nosec(sock, msg, size);
+ return err ?: sock_sendmsg_nosec(sock, msg);
}
EXPORT_SYMBOL(sock_sendmsg);
int kernel_sendmsg(struct socket *sock, struct msghdr *msg,
struct kvec *vec, size_t num, size_t size)
{
- mm_segment_t oldfs = get_fs();
- int result;
-
- set_fs(KERNEL_DS);
- /*
- * the following is safe, since for compiler definitions of kvec and
- * iovec are identical, yielding the same in-core layout and alignment
- */
- iov_iter_init(&msg->msg_iter, WRITE, (struct iovec *)vec, num, size);
- result = sock_sendmsg(sock, msg, size);
- set_fs(oldfs);
- return result;
+ iov_iter_kvec(&msg->msg_iter, WRITE | ITER_KVEC, vec, num, size);
+ return sock_sendmsg(sock, msg);
}
EXPORT_SYMBOL(kernel_sendmsg);
@@ -755,12 +747,8 @@ int kernel_recvmsg(struct socket *sock, struct msghdr *msg,
mm_segment_t oldfs = get_fs();
int result;
+ iov_iter_kvec(&msg->msg_iter, READ | ITER_KVEC, vec, num, size);
set_fs(KERNEL_DS);
- /*
- * the following is safe, since for compiler definitions of kvec and
- * iovec are identical, yielding the same in-core layout and alignment
- */
- iov_iter_init(&msg->msg_iter, READ, (struct iovec *)vec, num, size);
result = sock_recvmsg(sock, msg, size, flags);
set_fs(oldfs);
return result;
@@ -808,10 +796,10 @@ static ssize_t sock_read_iter(struct kiocb *iocb, struct iov_iter *to)
if (iocb->ki_pos != 0)
return -ESPIPE;
- if (iocb->ki_nbytes == 0) /* Match SYS5 behaviour */
+ if (!iov_iter_count(to)) /* Match SYS5 behaviour */
return 0;
- res = sock_recvmsg(sock, &msg, iocb->ki_nbytes, msg.msg_flags);
+ res = sock_recvmsg(sock, &msg, iov_iter_count(to), msg.msg_flags);
*to = msg.msg_iter;
return res;
}
@@ -833,7 +821,7 @@ static ssize_t sock_write_iter(struct kiocb *iocb, struct iov_iter *from)
if (sock->type == SOCK_SEQPACKET)
msg.msg_flags |= MSG_EOR;
- res = sock_sendmsg(sock, &msg, iocb->ki_nbytes);
+ res = sock_sendmsg(sock, &msg);
*from = msg.msg_iter;
return res;
}
@@ -1650,18 +1638,14 @@ SYSCALL_DEFINE6(sendto, int, fd, void __user *, buff, size_t, len,
struct iovec iov;
int fput_needed;
- if (len > INT_MAX)
- len = INT_MAX;
- if (unlikely(!access_ok(VERIFY_READ, buff, len)))
- return -EFAULT;
+ err = import_single_range(WRITE, buff, len, &iov, &msg.msg_iter);
+ if (unlikely(err))
+ return err;
sock = sockfd_lookup_light(fd, &err, &fput_needed);
if (!sock)
goto out;
- iov.iov_base = buff;
- iov.iov_len = len;
msg.msg_name = NULL;
- iov_iter_init(&msg.msg_iter, WRITE, &iov, 1, len);
msg.msg_control = NULL;
msg.msg_controllen = 0;
msg.msg_namelen = 0;
@@ -1675,7 +1659,7 @@ SYSCALL_DEFINE6(sendto, int, fd, void __user *, buff, size_t, len,
if (sock->file->f_flags & O_NONBLOCK)
flags |= MSG_DONTWAIT;
msg.msg_flags = flags;
- err = sock_sendmsg(sock, &msg, len);
+ err = sock_sendmsg(sock, &msg);
out_put:
fput_light(sock->file, fput_needed);
@@ -1710,26 +1694,22 @@ SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, ubuf, size_t, size,
int err, err2;
int fput_needed;
- if (size > INT_MAX)
- size = INT_MAX;
- if (unlikely(!access_ok(VERIFY_WRITE, ubuf, size)))
- return -EFAULT;
+ err = import_single_range(READ, ubuf, size, &iov, &msg.msg_iter);
+ if (unlikely(err))
+ return err;
sock = sockfd_lookup_light(fd, &err, &fput_needed);
if (!sock)
goto out;
msg.msg_control = NULL;
msg.msg_controllen = 0;
- iov.iov_len = size;
- iov.iov_base = ubuf;
- iov_iter_init(&msg.msg_iter, READ, &iov, 1, size);
/* Save some cycles and don't copy the address if not needed */
msg.msg_name = addr ? (struct sockaddr *)&address : NULL;
/* We assume all kernel code knows the size of sockaddr_storage */
msg.msg_namelen = 0;
if (sock->file->f_flags & O_NONBLOCK)
flags |= MSG_DONTWAIT;
- err = sock_recvmsg(sock, &msg, size, flags);
+ err = sock_recvmsg(sock, &msg, iov_iter_count(&msg.msg_iter), flags);
if (err >= 0 && addr != NULL) {
err2 = move_addr_to_user(&address,
@@ -1849,10 +1829,10 @@ struct used_address {
unsigned int name_len;
};
-static ssize_t copy_msghdr_from_user(struct msghdr *kmsg,
- struct user_msghdr __user *umsg,
- struct sockaddr __user **save_addr,
- struct iovec **iov)
+static int copy_msghdr_from_user(struct msghdr *kmsg,
+ struct user_msghdr __user *umsg,
+ struct sockaddr __user **save_addr,
+ struct iovec **iov)
{
struct sockaddr __user *uaddr;
struct iovec __user *uiov;
@@ -1898,13 +1878,8 @@ static ssize_t copy_msghdr_from_user(struct msghdr *kmsg,
kmsg->msg_iocb = NULL;
- err = rw_copy_check_uvector(save_addr ? READ : WRITE,
- uiov, nr_segs,
- UIO_FASTIOV, *iov, iov);
- if (err >= 0)
- iov_iter_init(&kmsg->msg_iter, save_addr ? READ : WRITE,
- *iov, nr_segs, err);
- return err;
+ return import_iovec(save_addr ? READ : WRITE, uiov, nr_segs,
+ UIO_FASTIOV, iov, &kmsg->msg_iter);
}
static int ___sys_sendmsg(struct socket *sock, struct user_msghdr __user *msg,
@@ -1919,7 +1894,7 @@ static int ___sys_sendmsg(struct socket *sock, struct user_msghdr __user *msg,
__attribute__ ((aligned(sizeof(__kernel_size_t))));
/* 20 is size of ipv6_pktinfo */
unsigned char *ctl_buf = ctl;
- int ctl_len, total_len;
+ int ctl_len;
ssize_t err;
msg_sys->msg_name = &address;
@@ -1929,8 +1904,7 @@ static int ___sys_sendmsg(struct socket *sock, struct user_msghdr __user *msg,
else
err = copy_msghdr_from_user(msg_sys, msg, NULL, &iov);
if (err < 0)
- goto out_freeiov;
- total_len = err;
+ return err;
err = -ENOBUFS;
@@ -1977,10 +1951,10 @@ static int ___sys_sendmsg(struct socket *sock, struct user_msghdr __user *msg,
used_address->name_len == msg_sys->msg_namelen &&
!memcmp(&used_address->name, msg_sys->msg_name,
used_address->name_len)) {
- err = sock_sendmsg_nosec(sock, msg_sys, total_len);
+ err = sock_sendmsg_nosec(sock, msg_sys);
goto out_freectl;
}
- err = sock_sendmsg(sock, msg_sys, total_len);
+ err = sock_sendmsg(sock, msg_sys);
/*
* If this is sendmmsg() and sending to current destination address was
* successful, remember it.
@@ -1996,8 +1970,7 @@ out_freectl:
if (ctl_buf != ctl)
sock_kfree_s(sock->sk, ctl_buf, ctl_len);
out_freeiov:
- if (iov != iovstack)
- kfree(iov);
+ kfree(iov);
return err;
}
@@ -2122,8 +2095,8 @@ static int ___sys_recvmsg(struct socket *sock, struct user_msghdr __user *msg,
else
err = copy_msghdr_from_user(msg_sys, msg, &uaddr, &iov);
if (err < 0)
- goto out_freeiov;
- total_len = err;
+ return err;
+ total_len = iov_iter_count(&msg_sys->msg_iter);
cmsg_ptr = (unsigned long)msg_sys->msg_control;
msg_sys->msg_flags = flags & (MSG_CMSG_CLOEXEC|MSG_CMSG_COMPAT);
@@ -2161,8 +2134,7 @@ static int ___sys_recvmsg(struct socket *sock, struct user_msghdr __user *msg,
err = len;
out_freeiov:
- if (iov != iovstack)
- kfree(iov);
+ kfree(iov);
return err;
}
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index cc331b6cf573..0c8120229a03 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -257,7 +257,7 @@ static int svc_sendto(struct svc_rqst *rqstp, struct xdr_buf *xdr)
svc_set_cmsg_data(rqstp, cmh);
- if (sock_sendmsg(sock, &msg, 0) < 0)
+ if (sock_sendmsg(sock, &msg) < 0)
goto out;
}
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 279e24f61305..a69ebc79bc50 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -25,7 +25,6 @@
#include <linux/slab.h>
#include <linux/time.h>
#include <linux/pm_qos.h>
-#include <linux/aio.h>
#include <linux/io.h>
#include <linux/dma-mapping.h>
#include <sound/core.h>
@@ -35,6 +34,7 @@
#include <sound/pcm_params.h>
#include <sound/timer.h>
#include <sound/minors.h>
+#include <linux/uio.h>
/*
* Compatibility