Re: [RFC PATCH V6 6/7] ovl: introduce ovl_sync_upper_blockdev()
From: Jan Kara <jack@suse.cz>
Date: 2021-11-26 09:23:11
Also in:
linux-fsdevel, lkml
On Mon 22-11-21 11:00:37, Chengguang Xu wrote:
From: Chengguang Xu <redacted> Introduce new helper ovl_sync_upper_blockdev() to sync upper blockdev. Signed-off-by: Chengguang Xu <redacted>
Looks good. Feel free to add: Reviewed-by: Jan Kara <jack@suse.cz> Honza
quoted hunk ↗ jump to hunk
--- fs/overlayfs/super.c | 10 ++++++++++ 1 file changed, 10 insertions(+)diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index 12acf0ec7395..ccffcd96491d 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c@@ -258,6 +258,16 @@ static void ovl_put_super(struct super_block *sb) ovl_free_fs(ofs); } +static int ovl_sync_upper_blockdev(struct super_block *sb, int wait) +{ + if (!sb->s_bdev) + return 0; + + if (!wait) + return filemap_flush(sb->s_bdev->bd_inode->i_mapping); + return filemap_write_and_wait_range(sb->s_bdev->bd_inode->i_mapping, 0, LLONG_MAX); +} + /* Sync real dirty inodes in upper filesystem (if it exists) */ static int ovl_sync_fs(struct super_block *sb, int wait) {-- 2.27.0
-- Jan Kara [off-list ref] SUSE Labs, CR