| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.12 106/196] f2fs: Do not issue small discards in LFS mode | Date | Tue, 25 Jul 2017 12:21:45 -0700 |
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4.12-stable review patch. If anyone has any objections, please let me know.
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From: Damien Le Moal <damien.lemoal@wdc.com>
commit acfd2810c75b0625897fc119a2d3a9c26cc0e405 upstream.
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@wdc.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- fs/f2fs/segment.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -1329,7 +1329,8 @@ find_next: 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,
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