• Tejun Heo's avatar
    mpage: make __mpage_writepage() honor cgroup writeback · 429b3fb0
    Tejun Heo authored
    __mpage_writepage() is used to implement mpage_writepages() which in
    turn is used for ->writepages() of 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, __mpage_writepage() currently ignores the
    blkcg indicated by the inode and issues all bio's without explicit
    blkcg association.
    
    This patch updates __mpage_writepage() so that the issued bio's are
    associated with inode_to_writeback_blkcg_css(inode).
    
    v2: Updated for per-inode wb association.
    Signed-off-by: 's avatarTejun Heo <tj@kernel.org>
    Cc: Jens Axboe <axboe@kernel.dk>
    Cc: Jan Kara <jack@suse.cz>
    Cc: Andrew Morton <akpm@linux-foundation.org>
    Cc: Alexander Viro <viro@zeniv.linux.org.uk>
    Signed-off-by: 's avatarJens Axboe <axboe@fb.com>
    429b3fb0
mpage.c 20 KB