[PATCH 2/4] f2fs: fix to don't call f2fs_stop_checkpoint in spinlock coverage

Chao Yu
2024-02-22T12:18:59Z

f2fs_stop_checkpoint(, false) is complex and it may sleep, so we should
move it outside segmap_lock spinlock coverage in get_new_segment().

Signed-off-by: Chao Yu <chao@kernel.org>
---
fs/f2fs/segment.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index d0209ea77dd2..8edc42071e6f 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -2646,6 +2646,7 @@ static void get_new_segment(struct f2fs_sb_info *sbi,
unsigned int old_zoneno = GET_ZONE_FROM_SEG(sbi, *newseg);
bool init = true;
int i;
+ int ret = 0;

spin_lock(&free_i->segmap_lock);

@@ -2671,9 +2672,8 @@ static void get_new_segment(struct f2fs_sb_info *sbi,
secno = find_first_zero_bit(free_i->free_secmap,
MAIN_SECS(sbi));
if (secno >= MAIN_SECS(sbi)) {
- f2fs_stop_checkpoint(sbi, false,
- STOP_CP_REASON_NO_SEGMENT);
- f2fs_bug_on(sbi, 1);
+ ret = -ENOSPC;
+ goto out_unlock;
}
}
segno = GET_SEG_FROM_SEC(sbi, secno);
@@ -2704,7 +2704,13 @@ static void get_new_segment(struct f2fs_sb_info *sbi,
f2fs_bug_on(sbi, test_bit(segno, free_i->free_segmap));
__set_inuse(sbi, segno);
*newseg = segno;
+out_unlock:
spin_unlock(&free_i->segmap_lock);
+
+ if (ret) {
+ f2fs_stop_checkpoint(sbi, false, STOP_CP_REASON_NO_SEGMENT);
+ f2fs_bug_on(sbi, 1);
+ }
}

static void reset_curseg(struct f2fs_sb_info *sbi, int type, int modified)
--
2.40.1