diff options
| author | Yan, Zheng <zheng.z.yan@intel.com> | 2013-11-30 12:47:41 +0800 |
|---|---|---|
| committer | Yan, Zheng <zheng.z.yan@intel.com> | 2014-01-21 13:29:33 +0800 |
| commit | 9215aeea622fec7ca8123c6bd6f03a1753e2b0b3 (patch) | |
| tree | 00c4aaae67c7891553f8331b6e0b6e54bf95d08f /fs/ceph | |
| parent | ca18bede048e95a749d13410ce1da4ad0ffa7938 (diff) | |
| download | linux-9215aeea622fec7ca8123c6bd6f03a1753e2b0b3.tar.bz2 | |
ceph: check inode caps in ceph_d_revalidate
Some inodes in readdir reply may have no caps. Getattr mds request
for these inodes can return -ESTALE. The fix is consider dentry that
links to inode with no caps as invalid. Invalid dentry causes a
lookup request to send to the mds, the MDS will send caps back.
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Diffstat (limited to 'fs/ceph')
| -rw-r--r-- | fs/ceph/caps.c | 12 | ||||
| -rw-r--r-- | fs/ceph/dir.c | 11 | ||||
| -rw-r--r-- | fs/ceph/super.h | 1 |
3 files changed, 21 insertions, 3 deletions
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index d2154d63f671..d65ff334901c 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -891,6 +891,18 @@ static int __ceph_is_any_caps(struct ceph_inode_info *ci) return !RB_EMPTY_ROOT(&ci->i_caps) || ci->i_cap_exporting_mds >= 0; } +int ceph_is_any_caps(struct inode *inode) +{ + struct ceph_inode_info *ci = ceph_inode(inode); + int ret; + + spin_lock(&ci->i_ceph_lock); + ret = __ceph_is_any_caps(ci); + spin_unlock(&ci->i_ceph_lock); + + return ret; +} + /* * Remove a cap. Take steps to deal with a racing iterate_session_caps. * diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index b629e9d59a35..619616d585b0 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -1041,14 +1041,19 @@ static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags) valid = 1; } else if (dentry_lease_is_valid(dentry) || dir_lease_is_valid(dir, dentry)) { - valid = 1; + if (dentry->d_inode) + valid = ceph_is_any_caps(dentry->d_inode); + else + valid = 1; } dout("d_revalidate %p %s\n", dentry, valid ? "valid" : "invalid"); - if (valid) + if (valid) { ceph_dentry_lru_touch(dentry); - else + } else { + ceph_dir_clear_complete(dir); d_drop(dentry); + } iput(dir); return valid; } diff --git a/fs/ceph/super.h b/fs/ceph/super.h index 891cda8c72aa..a6ba32fb0d49 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -782,6 +782,7 @@ extern int ceph_add_cap(struct inode *inode, extern void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release); extern void ceph_put_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap); +extern int ceph_is_any_caps(struct inode *inode); extern void __queue_cap_release(struct ceph_mds_session *session, u64 ino, u64 cap_id, u32 migrate_seq, u32 issue_seq); |