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authorTejun Heo <tj@kernel.org>2015-05-22 17:14:04 -0400
committerJens Axboe <axboe@fb.com>2015-06-02 08:38:04 -0600
commit429b3fb027492b2b9f96e00bb1a9255fc56d4934 (patch)
tree8ca9081601d7d3a09e428760e004078a7f27a28b
parentbafc0dba1e20d84578d7098d32caf63441e5743d (diff)
downloadlinux-429b3fb027492b2b9f96e00bb1a9255fc56d4934.tar.bz2
mpage: make __mpage_writepage() honor cgroup writeback
__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: Tejun 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: Jens Axboe <axboe@fb.com>
-rw-r--r--fs/mpage.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/mpage.c b/fs/mpage.c
index 3e79220babac..a3ccb0bd465a 100644
--- a/fs/mpage.c
+++ b/fs/mpage.c
@@ -605,6 +605,8 @@ alloc_new:
bio_get_nr_vecs(bdev), GFP_NOFS|__GFP_HIGH);
if (bio == NULL)
goto confused;
+
+ bio_associate_blkcg(bio, inode_to_wb_blkcg_css(inode));
}
/*