Messages in this thread Patch in this message | | | From | Kemeng Shi <> | Subject | [PATCH v2 18/20] ext4: remove repeat assignment to ac_f_ex | Date | Tue, 28 Feb 2023 19:43:04 +0800 |
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Call trace to assign ac_f_ex: ext4_mb_use_best_found ac->ac_f_ex = ac->ac_b_ex; ext4_mb_new_preallocation ext4_mb_new_group_pa ac->ac_f_ex = ac->ac_b_ex; ext4_mb_new_inode_pa ac->ac_f_ex = ac->ac_b_ex;
Actually allocated blocks is already stored in ac_f_ex in ext4_mb_use_best_found, so there is no need to assign ac_f_ex in ext4_mb_new_group_pa and ext4_mb_new_inode_pa. Just remove repeat assignment to ac_f_ex in ext4_mb_new_group_pa and ext4_mb_new_inode_pa.
Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com> Reviewed-by: Ojaswin Mujoo <ojaswin@linux.ibm.com> --- fs/ext4/mballoc.c | 8 -------- 1 file changed, 8 deletions(-)
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index f7fa081bece9..8c5ad44f71f4 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -4632,10 +4632,6 @@ ext4_mb_new_inode_pa(struct ext4_allocation_context *ac) BUG_ON(ac->ac_o_ex.fe_len > ac->ac_b_ex.fe_len); } - /* preallocation can change ac_b_ex, thus we store actually - * allocated blocks for history */ - ac->ac_f_ex = ac->ac_b_ex; - pa->pa_lstart = ac->ac_b_ex.fe_logical; pa->pa_pstart = ext4_grp_offs_to_block(sb, &ac->ac_b_ex); pa->pa_len = ac->ac_b_ex.fe_len; @@ -4686,10 +4682,6 @@ ext4_mb_new_group_pa(struct ext4_allocation_context *ac) pa = ac->ac_pa; - /* preallocation can change ac_b_ex, thus we store actually - * allocated blocks for history */ - ac->ac_f_ex = ac->ac_b_ex; - pa->pa_pstart = ext4_grp_offs_to_block(sb, &ac->ac_b_ex); pa->pa_lstart = pa->pa_pstart; pa->pa_len = ac->ac_b_ex.fe_len; -- 2.30.0
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