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authoralex chen <alex.chen@huawei.com>2014-06-24 00:22:07 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-24 03:47:45 +0400
commit5fb1beb069dcf616e88be9d330b86878a79aa4ff (patch)
treed14175b91979c4d64a433710f9a9e0168ef4919e /fs/ocfs2/namei.c
parentd05f0cdcbe6388723f1900c549b4850360545201 (diff)
downloadlinux-5fb1beb069dcf616e88be9d330b86878a79aa4ff.tar.xz
ocfs2: should add inode into orphan dir after updating entry in ocfs2_rename()
There are two files a and b in dir /mnt/ocfs2. node A node B mv a b In ocfs2_rename(), after calling ocfs2_orphan_add(), the inode of file b will be added into orphan dir. If ocfs2_update_entry() fails, ocfs2_rename return error and mv operation fails. But file b still exists in the parent dir. ocfs2_queue_orphan_scan -> ocfs2_queue_recovery_completion -> ocfs2_complete_recovery -> ocfs2_recover_orphans The inode of the file b will be put with iput(). ocfs2_evict_inode -> ocfs2_delete_inode -> ocfs2_wipe_inode -> ocfs2_remove_inode OCFS2_VALID_FL in the inode i_flags will be cleared. The file b still can be accessed on node B. ls /mnt/ocfs2 When first read the file b with ocfs2_read_inode_block(). It will validate the inode using ocfs2_validate_inode_block(). Because OCFS2_VALID_FL not set in the inode i_flags, so the file system will be readonly. So we should add inode into orphan dir after updating entry in ocfs2_rename(). Signed-off-by: alex.chen <alex.chen@huawei.com> Reviewed-by: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ocfs2/namei.c')
-rw-r--r--fs/ocfs2/namei.c22
1 files changed, 11 insertions, 11 deletions
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 2060fc398445..5819bb5d6483 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -1098,6 +1098,7 @@ static int ocfs2_rename(struct inode *old_dir,
struct ocfs2_dir_lookup_result old_entry_lookup = { NULL, };
struct ocfs2_dir_lookup_result orphan_insert = { NULL, };
struct ocfs2_dir_lookup_result target_insert = { NULL, };
+ bool should_add_orphan = false;
/* At some point it might be nice to break this function up a
* bit. */
@@ -1304,6 +1305,7 @@ static int ocfs2_rename(struct inode *old_dir,
mlog_errno(status);
goto bail;
}
+ should_add_orphan = true;
}
} else {
BUG_ON(new_dentry->d_parent->d_inode != new_dir);
@@ -1348,17 +1350,6 @@ static int ocfs2_rename(struct inode *old_dir,
goto bail;
}
- if (S_ISDIR(new_inode->i_mode) ||
- (ocfs2_read_links_count(newfe) == 1)) {
- status = ocfs2_orphan_add(osb, handle, new_inode,
- newfe_bh, orphan_name,
- &orphan_insert, orphan_dir);
- if (status < 0) {
- mlog_errno(status);
- goto bail;
- }
- }
-
/* change the dirent to point to the correct inode */
status = ocfs2_update_entry(new_dir, handle, &target_lookup_res,
old_inode);
@@ -1373,6 +1364,15 @@ static int ocfs2_rename(struct inode *old_dir,
else
ocfs2_add_links_count(newfe, -1);
ocfs2_journal_dirty(handle, newfe_bh);
+ if (should_add_orphan) {
+ status = ocfs2_orphan_add(osb, handle, new_inode,
+ newfe_bh, orphan_name,
+ &orphan_insert, orphan_dir);
+ if (status < 0) {
+ mlog_errno(status);
+ goto bail;
+ }
+ }
} else {
/* if the name was not found in new_dir, add it now */
status = ocfs2_add_entry(handle, new_dentry, old_inode,