Jaegeuk, On 5/26/17 17:16, Chao Yu wrote: > On 2017/5/26 16:04, Damien Le Moal wrote: >> clear_prefree_segments() issues small discards after discarding full >> segments. These small discards may not be section aligned, so not zone >> aligned on a zoned block device, causing __f2fs_iissue_discard_zone() to fail. >> Fix this by not issuing small discards for a volume mounted with the BLKZONED >> feature enabled. >> >> Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxx> > > This version looks good to me. > > Reviewed-by: Chao Yu <yuchao0@xxxxxxxxxx> > > Thanks, > >> --- >> fs/f2fs/segment.c | 3 ++- >> 1 file changed, 2 insertions(+), 1 deletion(-) >> >> diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c >> index 9684585..1279650 100644 >> --- a/fs/f2fs/segment.c >> +++ b/fs/f2fs/segment.c >> @@ -1322,7 +1322,8 @@ void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc) >> sbi->blocks_per_seg, cur_pos); >> len = next_pos - cur_pos; >> >> - if (force && len < cpc->trim_minlen) >> + if (f2fs_sb_mounted_blkzoned(sbi->sb) || >> + (force && len < cpc->trim_minlen)) >> goto skip; >> >> f2fs_issue_discard(sbi, entry->start_blkaddr + cur_pos, >> It looks like this patch was not included in 4.12, so we are still getting a lot of "unaligned discard" on zoned block devices. Is there a problem with this patch or was that an oversight ? Please consider adding this patch. Best regards. -- Damien Le Moal, Western Digital
