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f2fs: Do not issue small discards in LFS mode 

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.

Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Damien Le Moal 2017-05-26 17:04:40 +09:00 committed by Jaegeuk Kim
parent aaebdee8b8
commit acfd2810c7
1 changed files with 2 additions and 1 deletions
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3
fs/f2fs/segment.c
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@ -1337,7 +1337,8 @@ void clear_prefree_segments(struct f2fs_sb_info *sbi, struct cp_control *cpc)
sbi->blocks_per_seg, cur_pos); sbi->blocks_per_seg, cur_pos);
len = next_pos - 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; goto skip;
f2fs_issue_discard(sbi, entry->start_blkaddr + cur_pos, f2fs_issue_discard(sbi, entry->start_blkaddr + cur_pos,