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Commit 3684aa70 authored by Shaohua Li's avatar Shaohua Li Committed by Jens Axboe
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block-dev: enable writeback cgroup support 



block_dev's .writepages/.writepage already handles
wbc_init_bio/wbc_account_io. We only set the SB_I_CGROUPWB bit to
suppport writeback cgroup support.

Signed-off-by: default avatarShaohua Li <shli@fb.com>
Acked-by: default avatarTejun Heo <tj@kernel.org>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent e9137d4b

fs/block_dev.c

+5 −1
Original line number Diff line number Diff line
@@ -575,7 +575,11 @@ static const struct super_operations bdev_sops = { 
static struct dentry *bd_mount(struct file_system_type *fs_type,

	int flags, const char *dev_name, void *data)

{

	return mount_pseudo(fs_type, "bdev:", &bdev_sops, NULL, BDEVFS_MAGIC);

	struct dentry *dent;

	dent = mount_pseudo(fs_type, "bdev:", &bdev_sops, NULL, BDEVFS_MAGIC);

	if (dent)

		dent->d_sb->s_iflags |= SB_I_CGROUPWB;

	return dent;

}



static struct file_system_type bd_type = {