Minchan Kim bc7c1b09f7 zram: fix return value on writeback_store ... commit 57e0076e6575a7b7cef620a0bd2ee2549ef77818 upstream. writeback_store's return value is overwritten by submit_bio_wait's return value. Thus, writeback_store will return zero since there was no IO error. In the end, write syscall from userspace will see the zero as return value, which could make the process stall to keep trying the write until it will succeed. Link: https://lkml.kernel.org/r/20210312173949.2197662-1-minchan@kernel.org Fixes: 3b82a051c101("drivers/block/zram/zram_drv.c: fix error return codes not being returned in writeback_store") Signed-off-by: Minchan Kim <minchan@kernel.org> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: Colin Ian King <colin.king@canonical.com> Cc: John Dias <joaodias@google.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-03-17 17:06:34 +01:00
..
Kconfig	docs: blockdev: add it to the admin-guide	2019-07-15 11:03:01 -03:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
zcomp.c	zcomp: Use ARRAY_SIZE() for backends list	2020-06-04 19:06:24 -07:00
zcomp.h	zram: Use local lock to protect per-CPU data	2020-05-28 10:31:10 +02:00
zram_drv.c	zram: fix return value on writeback_store	2021-03-17 17:06:34 +01:00
zram_drv.h	zram: idle writeback fixes and cleanup	2019-01-08 17:15:10 -08:00