review.tizen.org Git - platform/kernel/linux-rpi.git/commit

author	Jaegeuk Kim <jaegeuk@kernel.org>
	Fri, 4 Mar 2022 17:40:05 +0000 (09:40 -0800)
committer	Jaegeuk Kim <jaegeuk@kernel.org>
	Fri, 11 Mar 2022 15:36:17 +0000 (07:36 -0800)
commit	ba900534f807f0b327c92d5141c85d2313e2d55c
tree	313fe2dbeadaa494354d0ad00b1335f4381e5d05	tree \| snapshot
parent	d13732cc0cc920ee58d45a38d8472769171aaa1d	commit \| diff

f2fs: don't get FREEZE lock in f2fs_evict_inode in frozen fs

Let's purge inode cache in order to avoid the below deadlock.

[freeze test]                         shrinkder
freeze_super
- pwercpu_down_write(SB_FREEZE_FS)
                                       - super_cache_scan
                                         - down_read(&sb->s_umount)
                                           - prune_icache_sb
                                            - dispose_list
                                             - evict
                                              - f2fs_evict_inode
thaw_super
- down_write(&sb->s_umount);
                                              - __percpu_down_read(SB_FREEZE_FS)

Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Documentation/ABI/testing/sysfs-fs-f2fs		diff \| blob \| history
fs/f2fs/debug.c		diff \| blob \| history
fs/f2fs/f2fs.h		diff \| blob \| history
fs/f2fs/inode.c		diff \| blob \| history
fs/f2fs/super.c		diff \| blob \| history