6.5-stable review patch. If anyone has any objections, please let me know.
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From: Shin'ichiro Kawasaki shinichiro.kawasaki@wdc.com
[ Upstream commit 3cb88bc15937990177df1f7eac6f22ebbed19312 ]
The commit 25f9080576b9 ("f2fs: add async reset zone command support") introduced "async reset zone commands" by calling __submit_zone_reset_cmd() in async discard operations. However, __submit_zone_reset_cmd() is called regardless of zone type of discard target zone. When devices have conventional zones, zone reset commands are sent to the conventional zones and cause I/O errors.
Avoid the I/O errors by checking that the discard target zone type is sequential write required. If not, handle the discard operation in same manner as non-zoned, regular block devices. For that purpose, add a new helper function f2fs_bdev_index() which gets index of the zone reset target device.
Fixes: 25f9080576b9 ("f2fs: add async reset zone command support") Signed-off-by: Shin'ichiro Kawasaki shinichiro.kawasaki@wdc.com Reviewed-by: Chao Yu chao@kernel.org Signed-off-by: Jaegeuk Kim jaegeuk@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- fs/f2fs/f2fs.h | 16 ++++++++++++++++ fs/f2fs/segment.c | 39 ++++++++++++++++++++++++++++----------- 2 files changed, 44 insertions(+), 11 deletions(-)
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index d372bedb0fe4e..a52830927cb49 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -4423,6 +4423,22 @@ static inline bool f2fs_blkz_is_seq(struct f2fs_sb_info *sbi, int devi, } #endif
+static inline int f2fs_bdev_index(struct f2fs_sb_info *sbi, + struct block_device *bdev) +{ + int i; + + if (!f2fs_is_multi_device(sbi)) + return 0; + + for (i = 0; i < sbi->s_ndevs; i++) + if (FDEV(i).bdev == bdev) + return i; + + WARN_ON(1); + return -1; +} + static inline bool f2fs_hw_should_discard(struct f2fs_sb_info *sbi) { return f2fs_sb_has_blkzoned(sbi); diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index cbb4bd95ea198..b127c3d96dbb0 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -1258,8 +1258,16 @@ static int __submit_discard_cmd(struct f2fs_sb_info *sbi,
#ifdef CONFIG_BLK_DEV_ZONED if (f2fs_sb_has_blkzoned(sbi) && bdev_is_zoned(bdev)) { - __submit_zone_reset_cmd(sbi, dc, flag, wait_list, issued); - return 0; + int devi = f2fs_bdev_index(sbi, bdev); + + if (devi < 0) + return -EINVAL; + + if (f2fs_blkz_is_seq(sbi, devi, dc->di.start)) { + __submit_zone_reset_cmd(sbi, dc, flag, + wait_list, issued); + return 0; + } } #endif
@@ -1785,15 +1793,24 @@ static void f2fs_wait_discard_bio(struct f2fs_sb_info *sbi, block_t blkaddr) dc = __lookup_discard_cmd(sbi, blkaddr); #ifdef CONFIG_BLK_DEV_ZONED if (dc && f2fs_sb_has_blkzoned(sbi) && bdev_is_zoned(dc->bdev)) { - /* force submit zone reset */ - if (dc->state == D_PREP) - __submit_zone_reset_cmd(sbi, dc, REQ_SYNC, - &dcc->wait_list, NULL); - dc->ref++; - mutex_unlock(&dcc->cmd_lock); - /* wait zone reset */ - __wait_one_discard_bio(sbi, dc); - return; + int devi = f2fs_bdev_index(sbi, dc->bdev); + + if (devi < 0) { + mutex_unlock(&dcc->cmd_lock); + return; + } + + if (f2fs_blkz_is_seq(sbi, devi, dc->di.start)) { + /* force submit zone reset */ + if (dc->state == D_PREP) + __submit_zone_reset_cmd(sbi, dc, REQ_SYNC, + &dcc->wait_list, NULL); + dc->ref++; + mutex_unlock(&dcc->cmd_lock); + /* wait zone reset */ + __wait_one_discard_bio(sbi, dc); + return; + } } #endif if (dc) {