iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

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

Browse Source 
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>
This commit is contained in:
Jaegeuk Kim
2022-03-04 09:40:05 -08:00
parent d13732cc0c
commit ba900534f8
5 changed files with 11 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
fs/f2fs/debug.c
View File

@@ -338,6 +338,7 @@ static char *s_flag[] = {
[SBI_QUOTA_SKIP_FLUSH] = " quota_skip_flush",
[SBI_QUOTA_NEED_REPAIR] = " quota_need_repair",
[SBI_IS_RESIZEFS] = " resizefs",
[SBI_IS_FREEZING] = " freezefs",
};
static int stat_show(struct seq_file *s, void *v)