Hi Chao,
On 01/05, Chao Yu wrote:
> Hi Jaegeuk,
>
> I can see patch named ("f2fs: call f2fs_wait_all_discard_bio for an error case")
> was merged in dev-test, but I think it's no needed to change error case handling
> like this since f2fs_wait_all_discard_bio should always be called after
> clear_prefree_segments.
Indeed, it's right. ;)
Thanks,
>
> Thanks,
>
> On 2017/1/5 11:19, Chao Yu wrote:
> > On 2017/1/4 17:29, Chao Yu wrote:
> >> On 2016/12/31 2:51, Jaegeuk Kim wrote:
> >>> This patch relaxes async discard commands to avoid waiting its end_io during
> >>> checkpoint.
> >>> Instead of waiting them during checkpoint, it will be done when actually reusing
> >>> them.
> >>>
> >>> Test on initial partition of nvme drive.
> >>>
> >>> # time fstrim /mnt/test
> >>>
> >>> Before : 6.158s
> >>> After : 4.822s
> >>>
> >>> Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
> >>
> >> Reviewed-by: Chao Yu <yuchao0@xxxxxxxxxx>
> >>
> >> One comment below,
> >
> > I still have a comment on this patch.
> >
> >>> -void f2fs_wait_all_discard_bio(struct f2fs_sb_info *sbi)
> >>> +/* This should be covered by global mutex, &sit_i->sentry_lock */
> >>> +void f2fs_wait_discard_bio(struct f2fs_sb_info *sbi, unsigned int segno)
> >>> {
> >>> struct list_head *wait_list = &(SM_I(sbi)->wait_list);
> >>> struct bio_entry *be, *tmp;
> >>> @@ -646,7 +650,15 @@ void f2fs_wait_all_discard_bio(struct f2fs_sb_info *sbi)
> >>> struct bio *bio = be->bio;
> >>> int err;
> >>>
> >>> - wait_for_completion_io(&be->event);
> >>> + if (!completion_done(&be->event)) {
> >>> + if ((be->start_segno >= segno &&
> >>> + be->end_segno <= segno) ||
> >>
> >> segno >= be->start_segno && segno < be->end_segno ?
> >
> > Can you check this?
> >
> > Thanks,
> >
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