summaryrefslogtreecommitdiffstats
path: root/fs/f2fs/gc.c
diff options
context:
space:
mode:
authorSahitya Tummala <stummala@codeaurora.org>2020-11-23 10:58:32 +0530
committerJaegeuk Kim <jaegeuk@kernel.org>2020-12-02 22:00:21 -0800
commit8769918bf06c9cfb01a1a6ee0e547c9916881496 (patch)
tree5ac4d1494b84a00c6736f28b0fad369d10432ff8 /fs/f2fs/gc.c
parent7ad08a58bf67594057362e45cbddd3e27e53e557 (diff)
downloadlinux-8769918bf06c9cfb01a1a6ee0e547c9916881496.tar.bz2
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/gc.c')
-rw-r--r--fs/f2fs/gc.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 05641a1e36cc..3ef84e6ded41 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -1986,7 +1986,7 @@ int f2fs_resize_fs(struct f2fs_sb_info *sbi, __u64 block_count)
freeze_super(sbi->sb);
down_write(&sbi->gc_lock);
- mutex_lock(&sbi->cp_mutex);
+ down_write(&sbi->cp_global_sem);
spin_lock(&sbi->stat_lock);
if (shrunk_blocks + valid_user_blocks(sbi) +
@@ -2031,7 +2031,7 @@ recover_out:
spin_unlock(&sbi->stat_lock);
}
out_err:
- mutex_unlock(&sbi->cp_mutex);
+ up_write(&sbi->cp_global_sem);
up_write(&sbi->gc_lock);
thaw_super(sbi->sb);
clear_sbi_flag(sbi, SBI_IS_RESIZEFS);