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f2fs: do FG_GC when GC boosting is required for zoned devices

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Under low free section count, we need to use FG_GC instead of BG_GC to
recover free sections.

Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Daeho Jeong 2024-09-09 15:19:44 -07:00 • committed by Jaegeuk Kim
parent 2223fe652f
commit 9748c2ddea
2 changed files with 18 additions and 7 deletions
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1
fs/f2fs/f2fs.h
View file

@ -1300,6 +1300,7 @@ struct f2fs_gc_control {
bool no_bg_gc; /* check the space and stop bg_gc */ bool no_bg_gc; /* check the space and stop bg_gc */
bool should_migrate_blocks; /* should migrate blocks */ bool should_migrate_blocks; /* should migrate blocks */
bool err_gc_skipped; /* return EAGAIN if GC skipped */ bool err_gc_skipped; /* return EAGAIN if GC skipped */
bool one_time; /* require one time GC in one migration unit */
unsigned int nr_free_secs; /* # of free sections to do GC */ unsigned int nr_free_secs; /* # of free sections to do GC */
}; };

24
fs/f2fs/gc.c
View file

@ -81,6 +81,8 @@ static int gc_thread_func(void *data)
continue; continue;
} }
gc_control.one_time = false;
/* /*
* [GC triggering condition] * [GC triggering condition]
* 0. GC is not conducted currently. * 0. GC is not conducted currently.
@ -126,15 +128,19 @@ static int gc_thread_func(void *data)
wait_ms = gc_th->max_sleep_time; wait_ms = gc_th->max_sleep_time;
} }
if (need_to_boost_gc(sbi)) if (need_to_boost_gc(sbi)) {
decrease_sleep_time(gc_th, &wait_ms); decrease_sleep_time(gc_th, &wait_ms);
else if (f2fs_sb_has_blkzoned(sbi))
gc_control.one_time = true;
} else {
increase_sleep_time(gc_th, &wait_ms); increase_sleep_time(gc_th, &wait_ms);
}
do_gc: do_gc:
stat_inc_gc_call_count(sbi, foreground ? stat_inc_gc_call_count(sbi, foreground ?
FOREGROUND : BACKGROUND); FOREGROUND : BACKGROUND);
sync_mode = F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC; sync_mode = (F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC) ||
gc_control.one_time;
/* foreground GC was been triggered via f2fs_balance_fs() */ /* foreground GC was been triggered via f2fs_balance_fs() */
if (foreground) if (foreground)
@ -1701,7 +1707,7 @@ static int __get_victim(struct f2fs_sb_info *sbi, unsigned int *victim,
static int do_garbage_collect(struct f2fs_sb_info *sbi, static int do_garbage_collect(struct f2fs_sb_info *sbi,
unsigned int start_segno, unsigned int start_segno,
struct gc_inode_list *gc_list, int gc_type, struct gc_inode_list *gc_list, int gc_type,
bool force_migrate) bool force_migrate, bool one_time)
{ {
struct page *sum_page; struct page *sum_page;
struct f2fs_summary_block *sum; struct f2fs_summary_block *sum;
@ -1728,7 +1734,7 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi,
sec_end_segno -= SEGS_PER_SEC(sbi) - sec_end_segno -= SEGS_PER_SEC(sbi) -
f2fs_usable_segs_in_sec(sbi, segno); f2fs_usable_segs_in_sec(sbi, segno);
if (gc_type == BG_GC) { if (gc_type == BG_GC || one_time) {
unsigned int window_granularity = unsigned int window_granularity =
sbi->migration_window_granularity; sbi->migration_window_granularity;
@ -1911,7 +1917,8 @@ retry:
} }
seg_freed = do_garbage_collect(sbi, segno, &gc_list, gc_type, seg_freed = do_garbage_collect(sbi, segno, &gc_list, gc_type,
gc_control->should_migrate_blocks); gc_control->should_migrate_blocks,
gc_control->one_time);
if (seg_freed < 0) if (seg_freed < 0)
goto stop; goto stop;
@ -1922,6 +1929,9 @@ retry:
total_sec_freed++; total_sec_freed++;
} }
if (gc_control->one_time)
goto stop;
if (gc_type == FG_GC) { if (gc_type == FG_GC) {
sbi->cur_victim_sec = NULL_SEGNO; sbi->cur_victim_sec = NULL_SEGNO;
@ -2047,7 +2057,7 @@ int f2fs_gc_range(struct f2fs_sb_info *sbi,
}; };
do_garbage_collect(sbi, segno, &gc_list, FG_GC, do_garbage_collect(sbi, segno, &gc_list, FG_GC,
dry_run_sections == 0); dry_run_sections == 0, false);
put_gc_inode(&gc_list); put_gc_inode(&gc_list);
if (!dry_run && get_valid_blocks(sbi, segno, true)) if (!dry_run && get_valid_blocks(sbi, segno, true))