ext4: make orphan functions be no-op in no-journal mode
Instead of checking whether the handle is valid, we check if journal
is enabled. This avoids taking the s_orphan_lock mutex in all cases
when there is no journal in use, including the error paths where
ext4_orphan_del() is called with a handle set to NULL.
Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 37c03b3..8f4bda7 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -2369,7 +2369,7 @@
struct ext4_iloc iloc;
int err = 0, rc;
- if (!ext4_handle_valid(handle))
+ if (!EXT4_SB(sb)->s_journal)
return 0;
mutex_lock(&EXT4_SB(sb)->s_orphan_lock);
@@ -2443,8 +2443,7 @@
struct ext4_iloc iloc;
int err = 0;
- /* ext4_handle_valid() assumes a valid handle_t pointer */
- if (handle && !ext4_handle_valid(handle))
+ if (!EXT4_SB(inode->i_sb)->s_journal)
return 0;
mutex_lock(&EXT4_SB(inode->i_sb)->s_orphan_lock);
@@ -2463,7 +2462,7 @@
* transaction handle with which to update the orphan list on
* disk, but we still need to remove the inode from the linked
* list in memory. */
- if (sbi->s_journal && !handle)
+ if (!handle)
goto out;
err = ext4_reserve_inode_write(handle, inode, &iloc);