On Fri 22-05-15 17:14:03, Tejun Heo wrote: > [__]block_write_full_page() is used to implement ->writepage in > various filesystems. All writeback logic is now updated to handle > cgroup writeback and the block cgroup to issue IOs for is encoded in > writeback_control and can be retrieved from the inode; however, > [__]block_write_full_page() currently ignores the blkcg indicated by > inode and issues all bio's without explicit blkcg association. > > This patch adds submit_bh_blkcg() which associates the bio with the > specified blkio cgroup before issuing and uses it in > __block_write_full_page() so that the issued bio's are associated with > inode_to_wb_blkcg_css(inode). One comment below... > @@ -44,6 +45,9 @@ > #include <trace/events/block.h> > > static int fsync_buffers_list(spinlock_t *lock, struct list_head *list); > +static int submit_bh_blkcg(int rw, struct buffer_head *bh, > + unsigned long bio_flags, The argument bio_flags is unused. What is is good for? Honza -- Jan Kara <jack@xxxxxxx> SUSE Labs, CR -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>