ext4: convert to mbcache2
The conversion is generally straightforward. The only tricky part is
that xattr block corresponding to found mbcache entry can get freed
before we get buffer lock for that block. So we have to check whether
the entry is still valid after getting buffer lock.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 3ed01ec..ecc37e1 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -844,7 +844,6 @@
ext4_release_system_zone(sb);
ext4_mb_release(sb);
ext4_ext_release(sb);
- ext4_xattr_put_super(sb);
if (!(sb->s_flags & MS_RDONLY)) {
ext4_clear_feature_journal_needs_recovery(sb);
@@ -3797,7 +3796,7 @@
no_journal:
if (ext4_mballoc_ready) {
- sbi->s_mb_cache = ext4_xattr_create_cache(sb->s_id);
+ sbi->s_mb_cache = ext4_xattr_create_cache();
if (!sbi->s_mb_cache) {
ext4_msg(sb, KERN_ERR, "Failed to create an mb_cache");
goto failed_mount_wq;
@@ -4027,6 +4026,10 @@
if (EXT4_SB(sb)->rsv_conversion_wq)
destroy_workqueue(EXT4_SB(sb)->rsv_conversion_wq);
failed_mount_wq:
+ if (sbi->s_mb_cache) {
+ ext4_xattr_destroy_cache(sbi->s_mb_cache);
+ sbi->s_mb_cache = NULL;
+ }
if (sbi->s_journal) {
jbd2_journal_destroy(sbi->s_journal);
sbi->s_journal = NULL;