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-rw-r--r--fs/nfs/namespace.c12
-rw-r--r--fs/nfs/nfs4_fs.h8
-rw-r--r--fs/nfs/nfs4file.c3
-rw-r--r--fs/nfs/nfs4proc.c90
-rw-r--r--fs/nfs/nfs4trace.h1
5 files changed, 72 insertions, 42 deletions
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 9287eb666322..2db17fdf516b 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -31,9 +31,9 @@ int nfs_mountpoint_expiry_timeout = 500 * HZ;
/*
* nfs_path - reconstruct the path given an arbitrary dentry
* @base - used to return pointer to the end of devname part of path
- * @dentry - pointer to dentry
+ * @dentry_in - pointer to dentry
* @buffer - result buffer
- * @buflen - length of buffer
+ * @buflen_in - length of buffer
* @flags - options (see below)
*
* Helper function for constructing the server pathname
@@ -48,15 +48,19 @@ int nfs_mountpoint_expiry_timeout = 500 * HZ;
* the original device (export) name
* (if unset, the original name is returned verbatim)
*/
-char *nfs_path(char **p, struct dentry *dentry, char *buffer, ssize_t buflen,
- unsigned flags)
+char *nfs_path(char **p, struct dentry *dentry_in, char *buffer,
+ ssize_t buflen_in, unsigned flags)
{
char *end;
int namelen;
unsigned seq;
const char *base;
+ struct dentry *dentry;
+ ssize_t buflen;
rename_retry:
+ buflen = buflen_in;
+ dentry = dentry_in;
end = buffer+buflen;
*--end = '\0';
buflen--;
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index bb322d9de313..c4a98cbda6dd 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -570,6 +570,14 @@ static inline bool nfs4_stateid_is_newer(const nfs4_stateid *s1, const nfs4_stat
return (s32)(be32_to_cpu(s1->seqid) - be32_to_cpu(s2->seqid)) > 0;
}
+static inline bool nfs4_stateid_is_next(const nfs4_stateid *s1, const nfs4_stateid *s2)
+{
+ u32 seq1 = be32_to_cpu(s1->seqid);
+ u32 seq2 = be32_to_cpu(s2->seqid);
+
+ return seq2 == seq1 + 1U || (seq2 == 1U && seq1 == 0xffffffffU);
+}
+
static inline void nfs4_stateid_seqid_inc(nfs4_stateid *s1)
{
u32 seqid = be32_to_cpu(s1->seqid);
diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c
index 534b6fd70ffd..6b31cb5f9c9d 100644
--- a/fs/nfs/nfs4file.c
+++ b/fs/nfs/nfs4file.c
@@ -138,7 +138,8 @@ static ssize_t __nfs4_copy_file_range(struct file *file_in, loff_t pos_in,
/* Only offload copy if superblock is the same */
if (file_inode(file_in)->i_sb != file_inode(file_out)->i_sb)
return -EXDEV;
- if (!nfs_server_capable(file_inode(file_out), NFS_CAP_COPY))
+ if (!nfs_server_capable(file_inode(file_out), NFS_CAP_COPY) ||
+ !nfs_server_capable(file_inode(file_in), NFS_CAP_COPY))
return -EOPNOTSUPP;
if (file_inode(file_in) == file_inode(file_out))
return -EOPNOTSUPP;
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 00435556db0c..ddc900df461c 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1515,19 +1515,6 @@ static void nfs_state_log_update_open_stateid(struct nfs4_state *state)
wake_up_all(&state->waitq);
}
-static void nfs_state_log_out_of_order_open_stateid(struct nfs4_state *state,
- const nfs4_stateid *stateid)
-{
- u32 state_seqid = be32_to_cpu(state->open_stateid.seqid);
- u32 stateid_seqid = be32_to_cpu(stateid->seqid);
-
- if (stateid_seqid == state_seqid + 1U ||
- (stateid_seqid == 1U && state_seqid == 0xffffffffU))
- nfs_state_log_update_open_stateid(state);
- else
- set_bit(NFS_STATE_CHANGE_WAIT, &state->flags);
-}
-
static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state)
{
struct nfs_client *clp = state->owner->so_server->nfs_client;
@@ -1553,21 +1540,19 @@ static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state)
* i.e. The stateid seqids have to be initialised to 1, and
* are then incremented on every state transition.
*/
-static bool nfs_need_update_open_stateid(struct nfs4_state *state,
+static bool nfs_stateid_is_sequential(struct nfs4_state *state,
const nfs4_stateid *stateid)
{
- if (test_bit(NFS_OPEN_STATE, &state->flags) == 0 ||
- !nfs4_stateid_match_other(stateid, &state->open_stateid)) {
+ if (test_bit(NFS_OPEN_STATE, &state->flags)) {
+ /* The common case - we're updating to a new sequence number */
+ if (nfs4_stateid_match_other(stateid, &state->open_stateid) &&
+ nfs4_stateid_is_next(&state->open_stateid, stateid)) {
+ return true;
+ }
+ } else {
+ /* This is the first OPEN in this generation */
if (stateid->seqid == cpu_to_be32(1))
- nfs_state_log_update_open_stateid(state);
- else
- set_bit(NFS_STATE_CHANGE_WAIT, &state->flags);
- return true;
- }
-
- if (nfs4_stateid_is_newer(stateid, &state->open_stateid)) {
- nfs_state_log_out_of_order_open_stateid(state, stateid);
- return true;
+ return true;
}
return false;
}
@@ -1641,16 +1626,16 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state,
int status = 0;
for (;;) {
- if (!nfs_need_update_open_stateid(state, stateid))
- return;
- if (!test_bit(NFS_STATE_CHANGE_WAIT, &state->flags))
+ if (nfs_stateid_is_sequential(state, stateid))
break;
+
if (status)
break;
/* Rely on seqids for serialisation with NFSv4.0 */
if (!nfs4_has_session(NFS_SERVER(state->inode)->nfs_client))
break;
+ set_bit(NFS_STATE_CHANGE_WAIT, &state->flags);
prepare_to_wait(&state->waitq, &wait, TASK_KILLABLE);
/*
* Ensure we process the state changes in the same order
@@ -1661,6 +1646,7 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state,
spin_unlock(&state->owner->so_lock);
rcu_read_unlock();
trace_nfs4_open_stateid_update_wait(state->inode, stateid, 0);
+
if (!signal_pending(current)) {
if (schedule_timeout(5*HZ) == 0)
status = -EAGAIN;
@@ -3397,7 +3383,8 @@ static bool nfs4_refresh_open_old_stateid(nfs4_stateid *dst,
__be32 seqid_open;
u32 dst_seqid;
bool ret;
- int seq;
+ int seq, status = -EAGAIN;
+ DEFINE_WAIT(wait);
for (;;) {
ret = false;
@@ -3409,15 +3396,41 @@ static bool nfs4_refresh_open_old_stateid(nfs4_stateid *dst,
continue;
break;
}
+
+ write_seqlock(&state->seqlock);
seqid_open = state->open_stateid.seqid;
- if (read_seqretry(&state->seqlock, seq))
- continue;
dst_seqid = be32_to_cpu(dst->seqid);
- if ((s32)(dst_seqid - be32_to_cpu(seqid_open)) >= 0)
- dst->seqid = cpu_to_be32(dst_seqid + 1);
- else
+
+ /* Did another OPEN bump the state's seqid? try again: */
+ if ((s32)(be32_to_cpu(seqid_open) - dst_seqid) > 0) {
dst->seqid = seqid_open;
+ write_sequnlock(&state->seqlock);
+ ret = true;
+ break;
+ }
+
+ /* server says we're behind but we haven't seen the update yet */
+ set_bit(NFS_STATE_CHANGE_WAIT, &state->flags);
+ prepare_to_wait(&state->waitq, &wait, TASK_KILLABLE);
+ write_sequnlock(&state->seqlock);
+ trace_nfs4_close_stateid_update_wait(state->inode, dst, 0);
+
+ if (signal_pending(current))
+ status = -EINTR;
+ else
+ if (schedule_timeout(5*HZ) != 0)
+ status = 0;
+
+ finish_wait(&state->waitq, &wait);
+
+ if (!status)
+ continue;
+ if (status == -EINTR)
+ break;
+
+ /* we slept the whole 5 seconds, we must have lost a seqid */
+ dst->seqid = cpu_to_be32(dst_seqid + 1);
ret = true;
break;
}
@@ -7846,9 +7859,11 @@ int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name,
* both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
* DS flags set.
*/
-static int nfs4_check_cl_exchange_flags(u32 flags)
+static int nfs4_check_cl_exchange_flags(u32 flags, u32 version)
{
- if (flags & ~EXCHGID4_FLAG_MASK_R)
+ if (version >= 2 && (flags & ~EXCHGID4_2_FLAG_MASK_R))
+ goto out_inval;
+ else if (version < 2 && (flags & ~EXCHGID4_FLAG_MASK_R))
goto out_inval;
if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) &&
(flags & EXCHGID4_FLAG_USE_NON_PNFS))
@@ -8261,7 +8276,8 @@ static int _nfs4_proc_exchange_id(struct nfs_client *clp, const struct cred *cre
if (status != 0)
goto out;
- status = nfs4_check_cl_exchange_flags(resp->flags);
+ status = nfs4_check_cl_exchange_flags(resp->flags,
+ clp->cl_mvops->minor_version);
if (status != 0)
goto out;
diff --git a/fs/nfs/nfs4trace.h b/fs/nfs/nfs4trace.h
index 9398c0b6e0a3..2295a934a154 100644
--- a/fs/nfs/nfs4trace.h
+++ b/fs/nfs/nfs4trace.h
@@ -1291,6 +1291,7 @@ DEFINE_NFS4_INODE_STATEID_EVENT(nfs4_setattr);
DEFINE_NFS4_INODE_STATEID_EVENT(nfs4_delegreturn);
DEFINE_NFS4_INODE_STATEID_EVENT(nfs4_open_stateid_update);
DEFINE_NFS4_INODE_STATEID_EVENT(nfs4_open_stateid_update_wait);
+DEFINE_NFS4_INODE_STATEID_EVENT(nfs4_close_stateid_update_wait);
DECLARE_EVENT_CLASS(nfs4_getattr_event,
TP_PROTO(
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-16 14:35:03 +0000