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ext4: open coding repeated check in next_linear_group

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Open coding repeated check in next_linear_group.

Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20240424061904.987525-6-shikemeng@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Kemeng Shi 2024-04-24 14:19:04 +08:00 committed by Theodore Ts'o
parent 2caffb6a27
commit da5704eef7
1 changed files with 15 additions and 16 deletions
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31
fs/ext4/mballoc.c
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@ -1080,23 +1080,11 @@ static inline int should_optimize_scan(struct ext4_allocation_context *ac)
}
/*
* Return next linear group for allocation. If linear traversal should not be
* performed, this function just returns the same group
* Return next linear group for allocation.
*/
static ext4_group_t
next_linear_group(struct ext4_allocation_context *ac, ext4_group_t group,
ext4_group_t ngroups)
next_linear_group(ext4_group_t group, ext4_group_t ngroups)
{
if (!should_optimize_scan(ac))
goto inc_and_return;
if (ac->ac_groups_linear_remaining) {
ac->ac_groups_linear_remaining--;
goto inc_and_return;
}
return group;
inc_and_return:
/*
* Artificially restricted ngroups for non-extent
* files makes group > ngroups possible on first loop.
@ -1122,8 +1110,19 @@ static void ext4_mb_choose_next_group(struct ext4_allocation_context *ac,
{
*new_cr = ac->ac_criteria;
if (!should_optimize_scan(ac) || ac->ac_groups_linear_remaining) {
*group = next_linear_group(ac, *group, ngroups);
if (!should_optimize_scan(ac)) {
*group = next_linear_group(*group, ngroups);
return;
}
/*
* Optimized scanning can return non adjacent groups which can cause
* seek overhead for rotational disks. So try few linear groups before
* trying optimized scan.
*/
if (ac->ac_groups_linear_remaining) {
*group = next_linear_group(*group, ngroups);
ac->ac_groups_linear_remaining--;
return;
}