]> git.baikalelectronics.ru Git - kernel.git/commit
md/r5cache: fix set_syndrome_sources() for data in cache
authorSong Liu <songliubraving@fb.com>
Mon, 13 Mar 2017 20:44:35 +0000 (13:44 -0700)
committerShaohua Li <shli@fb.com>
Tue, 14 Mar 2017 16:57:10 +0000 (09:57 -0700)
commitcfc15af21a233de1dbbf2983d2474d51badea0e5
tree77ee3009f8efac51dd90f44acb9c38a8dce127f4
parente4f24b23cd43d07f1957e1b5239a0f6c51dd596d
md/r5cache: fix set_syndrome_sources() for data in cache

Before this patch, device InJournal will be included in prexor
(SYNDROME_SRC_WANT_DRAIN) but not in reconstruct (SYNDROME_SRC_WRITTEN). So it
will break parity calculation. With srctype == SYNDROME_SRC_WRITTEN, we need
include both dev with non-null ->written and dev with R5_InJournal. This fixes
logic in 236d89d(md/r5cache: caching phase of r5cache)

Cc: stable@vger.kernel.org (v4.10+)
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Shaohua Li <shli@fb.com>
drivers/md/raid5.c