Message ID | 20211122030038.1938875-7-cgxu519@mykernel.net (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | implement containerized syncfs for overlayfs | expand |
On Mon 22-11-21 11:00:37, Chengguang Xu wrote: > From: Chengguang Xu <charliecgxu@tencent.com> > > Introduce new helper ovl_sync_upper_blockdev() to sync > upper blockdev. > > Signed-off-by: Chengguang Xu <charliecgxu@tencent.com> Looks good. Feel free to add: Reviewed-by: Jan Kara <jack@suse.cz> Honza > --- > 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 > >
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) {