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| author | Sahitya Tummala <stummala@codeaurora.org> | 2020-11-23 10:58:32 +0530 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2020-12-02 22:00:21 -0800 |
| commit | 8769918bf06c9cfb01a1a6ee0e547c9916881496 (patch) | |
| tree | 5ac4d1494b84a00c6736f28b0fad369d10432ff8 /fs/f2fs/recovery.c | |
| parent | 7ad08a58bf67594057362e45cbddd3e27e53e557 (diff) | |
| download | linux-8769918bf06c9cfb01a1a6ee0e547c9916881496.tar.gz linux-8769918bf06c9cfb01a1a6ee0e547c9916881496.tar.bz2 linux-8769918bf06c9cfb01a1a6ee0e547c9916881496.zip | |
f2fs: change to use rwsem for cp_mutex
Use rwsem to ensure serialization of the callers and to avoid
starvation of high priority tasks, when the system is under
heavy IO workload.
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/recovery.c')
| -rw-r--r-- | fs/f2fs/recovery.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c index 0947d36af1a8..da75d5d52f0a 100644 --- a/fs/f2fs/recovery.c +++ b/fs/f2fs/recovery.c @@ -799,7 +799,7 @@ int f2fs_recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only) INIT_LIST_HEAD(&dir_list); /* prevent checkpoint */ - mutex_lock(&sbi->cp_mutex); + down_write(&sbi->cp_global_sem); /* step #1: find fsynced inode numbers */ err = find_fsync_dnodes(sbi, &inode_list, check_only); @@ -850,7 +850,7 @@ skip: if (!err) clear_sbi_flag(sbi, SBI_POR_DOING); - mutex_unlock(&sbi->cp_mutex); + up_write(&sbi->cp_global_sem); /* let's drop all the directory inodes for clean checkpoint */ destroy_fsync_dnodes(&dir_list, err); |