Hi Yunlong,
On 2017/8/26 19:46, Yunlong Song wrote:
> In come corner case, the reserved segments are used to do gc, and there are
> not enough free segments for write checkpoint to finish its job, then the
> gc process will fail to change the prefree segments to free segments.
How about doing investigate that why we haven't enough free segment for GC?
Thanks,
>
> Signed-off-by: Yunlong Song <yunlong.s...@huawei.com>
> ---
> fs/f2fs/gc.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
> index cd147e7..c8a828f 100644
> --- a/fs/f2fs/gc.c
> +++ b/fs/f2fs/gc.c
> @@ -1056,6 +1056,13 @@ int f2fs_gc(struct f2fs_sb_info *sbi, bool sync,
> if (!sync) {
> if (has_not_enough_free_secs(sbi, sec_freed, 0)) {
> segno = NULL_SEGNO;
> + if (prefree_segments(sbi) &&
> + has_not_enough_free_secs(sbi,
> + reserved_sections(sbi), 0)) {
> + ret = write_checkpoint(sbi, &cpc);
> + if (ret)
> + goto stop;
> + }
> goto gc_more;
> }
>
>
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