Delete invalid ac_b_extent backup inside ext4_mb_use_best_found(),
we have done this operation in ext4_mb_new_group_pa() and
ext4_mb_new_inode_pa().
Signed-off-by: Chunguang Xu <brookxu@xxxxxxxxxxx>
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 9b1c3ad..fb63e9f 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -1704,10 +1704,6 @@ static void ext4_mb_use_best_found(struct ext4_allocation_context *ac,
ac->ac_b_ex.fe_logical = ac->ac_g_ex.fe_logical;
ret = mb_mark_used(e4b, &ac->ac_b_ex);
- /* preallocation can change ac_b_ex, thus we store actually
- * allocated blocks for history */
- ac->ac_f_ex = ac->ac_b_ex;
-
ac->ac_status = AC_STATUS_FOUND;
ac->ac_tail = ret & 0xffff;
ac->ac_buddy = ret >> 16;
@@ -1726,8 +1722,8 @@ static void ext4_mb_use_best_found(struct ext4_allocation_context *ac,
/* store last allocated for subsequent stream allocation */
if (ac->ac_flags & EXT4_MB_STREAM_ALLOC) {
spin_lock(&sbi->s_md_lock);
- sbi->s_mb_last_group = ac->ac_f_ex.fe_group;
- sbi->s_mb_last_start = ac->ac_f_ex.fe_start;
+ sbi->s_mb_last_group = ac->ac_b_ex.fe_group;
+ sbi->s_mb_last_start = ac->ac_b_ex.fe_start;
spin_unlock(&sbi->s_md_lock);
}
/*
--
1.8.3.1
