Messages in this thread Patch in this message | | | From | Sahitya Tummala <> | Subject | [PATCH] f2fs: prevent meta updates while checkpoint is in progress | Date | Thu, 26 Mar 2020 16:06:59 +0530 |
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allocate_segment_for_resize() can cause metapage updates if it requires to change the current node/data segments for resizing. Stop these meta updates when there is a checkpoint already in progress to prevent inconsistent CP data.
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org> --- fs/f2fs/gc.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 5bca560..6122bad 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -1399,8 +1399,10 @@ static int free_segment_range(struct f2fs_sb_info *sbi, unsigned int start, int err = 0; /* Move out cursegs from the target range */ + f2fs_lock_op(sbi); for (type = CURSEG_HOT_DATA; type < NR_CURSEG_TYPE; type++) allocate_segment_for_resize(sbi, type, start, end); + f2fs_unlock_op(sbi); /* do GC to move out valid blocks in the range */ for (segno = start; segno <= end; segno += sbi->segs_per_sec) { -- Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.
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