ocfs2: Directory c/mtime update fixes
ocfs2 wasn't updating c/mtime on directories during dirent
creation/deletion. Fix ocfs2_unlink(), ocfs2_rename() and
__ocfs2_add_entry() by adding the proper code to update the struct inode and
push the change out to disk.
This helps rename/unlink on nfs exported file systems in particular as those
clients compare directory time values to avoid a full re-reading a directory
which hasn't changed.
ocfs2_rename() loses some superfluous error handling as a result of this
patch.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 9637039..f3d7803 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -932,14 +932,15 @@
goto leave;
}
- if (S_ISDIR(inode->i_mode)) {
+ dir->i_ctime = dir->i_mtime = CURRENT_TIME;
+ if (S_ISDIR(inode->i_mode))
drop_nlink(dir);
- status = ocfs2_mark_inode_dirty(handle, dir,
- parent_node_bh);
- if (status < 0) {
- mlog_errno(status);
+
+ status = ocfs2_mark_inode_dirty(handle, dir, parent_node_bh);
+ if (status < 0) {
+ mlog_errno(status);
+ if (S_ISDIR(inode->i_mode))
inc_nlink(dir);
- }
}
leave:
@@ -1068,6 +1069,7 @@
char orphan_name[OCFS2_ORPHAN_NAMELEN + 1];
struct buffer_head *orphan_entry_bh = NULL;
struct buffer_head *newfe_bh = NULL;
+ struct buffer_head *old_inode_bh = NULL;
struct buffer_head *insert_entry_bh = NULL;
struct ocfs2_super *osb = NULL;
u64 newfe_blkno;
@@ -1079,7 +1081,7 @@
struct buffer_head *new_de_bh = NULL, *old_de_bh = NULL; // bhs for above
struct buffer_head *old_inode_de_bh = NULL; // if old_dentry is a dir,
// this is the 1st dirent bh
- nlink_t old_dir_nlink = old_dir->i_nlink, new_dir_nlink = new_dir->i_nlink;
+ nlink_t old_dir_nlink = old_dir->i_nlink;
/* At some point it might be nice to break this function up a
* bit. */
@@ -1139,12 +1141,11 @@
}
/*
- * Though we don't require an inode meta data update if
- * old_inode is not a directory, we lock anyway here to ensure
- * the vote thread on other nodes won't have to concurrently
- * downconvert the inode and the dentry locks.
+ * Aside from allowing a meta data update, the locking here
+ * also ensures that the vote thread on other nodes won't have
+ * to concurrently downconvert the inode and the dentry locks.
*/
- status = ocfs2_meta_lock(old_inode, NULL, 1);
+ status = ocfs2_meta_lock(old_inode, &old_inode_bh, 1);
if (status < 0) {
if (status != -ENOENT)
mlog_errno(status);
@@ -1355,6 +1356,7 @@
old_inode->i_ctime = CURRENT_TIME;
mark_inode_dirty(old_inode);
+ ocfs2_mark_inode_dirty(handle, old_inode, old_inode_bh);
/* now that the name has been added to new_dir, remove the old name */
status = ocfs2_delete_entry(handle, old_dir, old_de, old_de_bh);
@@ -1384,27 +1386,22 @@
}
}
mark_inode_dirty(old_dir);
- if (new_inode)
+ ocfs2_mark_inode_dirty(handle, old_dir, old_dir_bh);
+ if (new_inode) {
mark_inode_dirty(new_inode);
+ ocfs2_mark_inode_dirty(handle, new_inode, newfe_bh);
+ }
- if (old_dir != new_dir)
- if (new_dir_nlink != new_dir->i_nlink) {
- if (!new_dir_bh) {
- mlog(ML_ERROR, "need to change nlink for new "
- "dir %llu from %d to %d but bh is NULL\n",
- (unsigned long long)OCFS2_I(new_dir)->ip_blkno,
- (int)new_dir_nlink, new_dir->i_nlink);
- } else {
- struct ocfs2_dinode *fe;
- status = ocfs2_journal_access(handle,
- new_dir,
- new_dir_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- fe = (struct ocfs2_dinode *) new_dir_bh->b_data;
- fe->i_links_count = cpu_to_le16(new_dir->i_nlink);
- status = ocfs2_journal_dirty(handle, new_dir_bh);
- }
- }
+ if (old_dir != new_dir) {
+ /* Keep the same times on both directories.*/
+ new_dir->i_ctime = new_dir->i_mtime = old_dir->i_ctime;
+
+ /*
+ * This will also pick up the i_nlink change from the
+ * block above.
+ */
+ ocfs2_mark_inode_dirty(handle, new_dir, new_dir_bh);
+ }
if (old_dir_nlink != old_dir->i_nlink) {
if (!old_dir_bh) {
@@ -1455,6 +1452,8 @@
iput(new_inode);
if (newfe_bh)
brelse(newfe_bh);
+ if (old_inode_bh)
+ brelse(old_inode_bh);
if (old_dir_bh)
brelse(old_dir_bh);
if (new_dir_bh)
@@ -1826,6 +1825,13 @@
(le16_to_cpu(de->rec_len) >= rec_len)) ||
(le16_to_cpu(de->rec_len) >=
(OCFS2_DIR_REC_LEN(de->name_len) + rec_len))) {
+ dir->i_mtime = dir->i_ctime = CURRENT_TIME;
+ retval = ocfs2_mark_inode_dirty(handle, dir, parent_fe_bh);
+ if (retval < 0) {
+ mlog_errno(retval);
+ goto bail;
+ }
+
status = ocfs2_journal_access(handle, dir, insert_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
/* By now the buffer is marked for journaling */
@@ -1848,7 +1854,6 @@
de->name_len = namelen;
memcpy(de->name, name, namelen);
- dir->i_mtime = dir->i_ctime = CURRENT_TIME;
dir->i_version++;
status = ocfs2_journal_dirty(handle, insert_bh);
retval = 0;