Hi Sahitya,

On 03/26, Sahitya Tummala wrote:
> 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.

Doesn't freeze|thaw_bdev(sbi->sb->s_bdev); work for you?

> 
> Signed-off-by: Sahitya Tummala <stumm...@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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