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authorShaohua Li <shli@fb.com>2016-02-22 15:27:40 -0700
committerJens Axboe <axboe@fb.com>2016-03-03 14:50:53 -0700
commit3684aa7099e0ab1038a1a1bf717ae60ffc3018d1 (patch)
tree1223fcd0b589e23cc936c46b835ef05d99357270 /fs/block_dev.c
parente9137d4b93078b6a9965acfb18a2a2ad91cf8405 (diff)
downloadop-kernel-dev-3684aa7099e0ab1038a1a1bf717ae60ffc3018d1.zip
op-kernel-dev-3684aa7099e0ab1038a1a1bf717ae60ffc3018d1.tar.gz
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: Shaohua Li <shli@fb.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'fs/block_dev.c')
-rw-r--r--fs/block_dev.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 7b9cd49..548ded7 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -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 = {
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