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| author | Chao Yu <yuchao0@huawei.com> | 2017-11-30 14:28:20 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-01-03 06:27:30 +0300 |
| commit | bae01eda8e6ef3ba66ee068d91fd4dd31a649c6f (patch) | |
| tree | 6b646b00d6d9ae3be7d51def93b8006368687215 /fs/f2fs/f2fs.h | |
| parent | 4e6aad29bc8d5d56f053c9bb2fe7a5178ea6f3dc (diff) | |
| download | linux-bae01eda8e6ef3ba66ee068d91fd4dd31a649c6f.tar.xz | |
f2fs: fix error handling in fill_super
In fill_super, if we fail to call f2fs_build_stats(), it needs to detach
from global f2fs shrink list, otherwise once system starts to shrink slab
cache, we will encounter below panic:
BUG: unable to handle kernel paging request at 00007d35
Oops: 0002 [#1] PREEMPT SMP
EIP: __lock_acquire+0x70/0x12c0
Call Trace:
lock_acquire+0xae/0x220
mutex_trylock+0xc5/0xf0
f2fs_shrink_count+0x32/0xb0 [f2fs]
shrink_slab+0xf1/0x5b0
drop_slab_node+0x35/0x60
drop_slab+0xf/0x20
drop_caches_sysctl_handler+0x79/0xc0
proc_sys_call_handler+0xa4/0xc0
proc_sys_write+0x1f/0x30
__vfs_write+0x24/0x150
SyS_write+0x44/0x90
do_fast_syscall_32+0xa1/0x1ca
entry_SYSENTER_32+0x4c/0x7b
In addition, this patch relocates f2fs_join_shrinker in fill_super to
avoid unneeded error handling of it.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/f2fs.h')
0 files changed, 0 insertions, 0 deletions