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Diffstat (limited to 'fs/ceph/dir.c')
-rw-r--r--fs/ceph/dir.c50
1 files changed, 37 insertions, 13 deletions
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index ea8ee2e526aa..4fd30900eff7 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -51,8 +51,11 @@ int ceph_init_dentry(struct dentry *dentry)
return -ENOMEM; /* oh well */
spin_lock(&dentry->d_lock);
- if (dentry->d_fsdata) /* lost a race */
+ if (dentry->d_fsdata) {
+ /* lost a race */
+ kmem_cache_free(ceph_dentry_cachep, di);
goto out_unlock;
+ }
di->dentry = dentry;
di->lease_session = NULL;
dentry->d_fsdata = di;
@@ -125,7 +128,8 @@ more:
dentry = list_entry(p, struct dentry, d_u.d_child);
di = ceph_dentry(dentry);
while (1) {
- dout(" p %p/%p d_subdirs %p/%p\n", p->prev, p->next,
+ dout(" p %p/%p %s d_subdirs %p/%p\n", p->prev, p->next,
+ d_unhashed(dentry) ? "!hashed" : "hashed",
parent->d_subdirs.prev, parent->d_subdirs.next);
if (p == &parent->d_subdirs) {
fi->at_end = 1;
@@ -229,6 +233,7 @@ static int ceph_readdir(struct file *filp, void *dirent, filldir_t filldir)
u32 ftype;
struct ceph_mds_reply_info_parsed *rinfo;
const int max_entries = client->mount_args->max_readdir;
+ const int max_bytes = client->mount_args->max_readdir_bytes;
dout("readdir %p filp %p frag %u off %u\n", inode, filp, frag, off);
if (fi->at_end)
@@ -312,6 +317,7 @@ more:
req->r_readdir_offset = fi->next_offset;
req->r_args.readdir.frag = cpu_to_le32(frag);
req->r_args.readdir.max_entries = cpu_to_le32(max_entries);
+ req->r_args.readdir.max_bytes = cpu_to_le32(max_bytes);
req->r_num_caps = max_entries + 1;
err = ceph_mdsc_do_request(mdsc, NULL, req);
if (err < 0) {
@@ -335,7 +341,7 @@ more:
if (req->r_reply_info.dir_end) {
kfree(fi->last_name);
fi->last_name = NULL;
- fi->next_offset = 0;
+ fi->next_offset = 2;
} else {
rinfo = &req->r_reply_info;
err = note_last_dentry(fi,
@@ -478,7 +484,7 @@ static loff_t ceph_dir_llseek(struct file *file, loff_t offset, int origin)
struct dentry *ceph_finish_lookup(struct ceph_mds_request *req,
struct dentry *dentry, int err)
{
- struct ceph_client *client = ceph_client(dentry->d_sb);
+ struct ceph_client *client = ceph_sb_to_client(dentry->d_sb);
struct inode *parent = dentry->d_parent->d_inode;
/* .snap dir? */
@@ -568,7 +574,6 @@ static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry,
!is_root_ceph_dentry(dir, dentry) &&
(ci->i_ceph_flags & CEPH_I_COMPLETE) &&
(__ceph_caps_issued_mask(ci, CEPH_CAP_FILE_SHARED, 1))) {
- di->offset = ci->i_max_offset++;
spin_unlock(&dir->i_lock);
dout(" dir %p complete, -ENOENT\n", dir);
d_add(dentry, NULL);
@@ -880,12 +885,30 @@ static int ceph_rename(struct inode *old_dir, struct dentry *old_dentry,
* do_request, above). If there is no trace, we need
* to do it here.
*/
+
+ /* d_move screws up d_subdirs order */
+ ceph_i_clear(new_dir, CEPH_I_COMPLETE);
+
d_move(old_dentry, new_dentry);
+
+ /* ensure target dentry is invalidated, despite
+ rehashing bug in vfs_rename_dir */
+ ceph_invalidate_dentry_lease(new_dentry);
}
ceph_mdsc_put_request(req);
return err;
}
+/*
+ * Ensure a dentry lease will no longer revalidate.
+ */
+void ceph_invalidate_dentry_lease(struct dentry *dentry)
+{
+ spin_lock(&dentry->d_lock);
+ dentry->d_time = jiffies;
+ ceph_dentry(dentry)->lease_shared_gen = 0;
+ spin_unlock(&dentry->d_lock);
+}
/*
* Check if dentry lease is valid. If not, delete the lease. Try to
@@ -963,8 +986,9 @@ static int ceph_d_revalidate(struct dentry *dentry, struct nameidata *nd)
{
struct inode *dir = dentry->d_parent->d_inode;
- dout("d_revalidate %p '%.*s' inode %p\n", dentry,
- dentry->d_name.len, dentry->d_name.name, dentry->d_inode);
+ dout("d_revalidate %p '%.*s' inode %p offset %lld\n", dentry,
+ dentry->d_name.len, dentry->d_name.name, dentry->d_inode,
+ ceph_dentry(dentry)->offset);
/* always trust cached snapped dentries, snapdir dentry */
if (ceph_snap(dir) != CEPH_NOSNAP) {
@@ -1041,7 +1065,7 @@ static ssize_t ceph_read_dir(struct file *file, char __user *buf, size_t size,
struct ceph_inode_info *ci = ceph_inode(inode);
int left;
- if (!ceph_test_opt(ceph_client(inode->i_sb), DIRSTAT))
+ if (!ceph_test_opt(ceph_sb_to_client(inode->i_sb), DIRSTAT))
return -EISDIR;
if (!cf->dir_info) {
@@ -1143,7 +1167,7 @@ void ceph_dentry_lru_add(struct dentry *dn)
dout("dentry_lru_add %p %p '%.*s'\n", di, dn,
dn->d_name.len, dn->d_name.name);
if (di) {
- mdsc = &ceph_client(dn->d_sb)->mdsc;
+ mdsc = &ceph_sb_to_client(dn->d_sb)->mdsc;
spin_lock(&mdsc->dentry_lru_lock);
list_add_tail(&di->lru, &mdsc->dentry_lru);
mdsc->num_dentry++;
@@ -1156,10 +1180,10 @@ void ceph_dentry_lru_touch(struct dentry *dn)
struct ceph_dentry_info *di = ceph_dentry(dn);
struct ceph_mds_client *mdsc;
- dout("dentry_lru_touch %p %p '%.*s'\n", di, dn,
- dn->d_name.len, dn->d_name.name);
+ dout("dentry_lru_touch %p %p '%.*s' (offset %lld)\n", di, dn,
+ dn->d_name.len, dn->d_name.name, di->offset);
if (di) {
- mdsc = &ceph_client(dn->d_sb)->mdsc;
+ mdsc = &ceph_sb_to_client(dn->d_sb)->mdsc;
spin_lock(&mdsc->dentry_lru_lock);
list_move_tail(&di->lru, &mdsc->dentry_lru);
spin_unlock(&mdsc->dentry_lru_lock);
@@ -1174,7 +1198,7 @@ void ceph_dentry_lru_del(struct dentry *dn)
dout("dentry_lru_del %p %p '%.*s'\n", di, dn,
dn->d_name.len, dn->d_name.name);
if (di) {
- mdsc = &ceph_client(dn->d_sb)->mdsc;
+ mdsc = &ceph_sb_to_client(dn->d_sb)->mdsc;
spin_lock(&mdsc->dentry_lru_lock);
list_del_init(&di->lru);
mdsc->num_dentry--;
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-26 05:56:51 +0000