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Subject[PATCH v8 10/11] dm: call dm_zone_endio after the target endio callback for zoned devices
Date
dm_zone_endio() updates the bi_sector of orig bio for zoned devices that
uses either native append or append emulation and it is called before the
endio of the target. But target endio can still update the clone bio
after dm_zone_endio is called, thereby, the orig bio does not contain
the updated information anymore. Call dm_zone_endio for zoned devices
after calling the target's endio function

Signed-off-by: Pankaj Raghav <p.raghav@samsung.com>
---
drivers/md/dm.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 03ac6143b8aa..bc410ee04004 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1123,10 +1123,6 @@ static void clone_endio(struct bio *bio)
disable_write_zeroes(md);
}

- if (static_branch_unlikely(&zoned_enabled) &&
- unlikely(bdev_is_zoned(bio->bi_bdev)))
- dm_zone_endio(io, bio);
-
if (endio) {
int r = endio(ti, bio, &error);
switch (r) {
@@ -1155,6 +1151,10 @@ static void clone_endio(struct bio *bio)
}
}

+ if (static_branch_unlikely(&zoned_enabled) &&
+ unlikely(bdev_is_zoned(bio->bi_bdev)))
+ dm_zone_endio(io, bio);
+
if (static_branch_unlikely(&swap_bios_enabled) &&
unlikely(swap_bios_limit(ti, bio)))
up(&md->swap_bios_semaphore);
--
2.25.1
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