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author | Tejun Heo <tj@kernel.org> | 2015-06-02 08:37:23 -0600 |
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committer | Jens Axboe <axboe@fb.com> | 2015-06-02 08:37:23 -0600 |
commit | bafc0dba1e20d84578d7098d32caf63441e5743d (patch) | |
tree | e6ee1d8fd5b84a6a39da8705ce777b912fb70a02 /include | |
parent | 0747259d13febfcc838980a63c414c9b920cea6f (diff) | |
download | linux-stable-bafc0dba1e20d84578d7098d32caf63441e5743d.tar.gz linux-stable-bafc0dba1e20d84578d7098d32caf63441e5743d.tar.bz2 linux-stable-bafc0dba1e20d84578d7098d32caf63441e5743d.zip |
buffer, writeback: make __block_write_full_page() honor cgroup writeback
[__]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).
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>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/backing-dev.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 9cc11e5b97ca..e9d7373f5f93 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -393,6 +393,12 @@ static inline struct bdi_writeback *inode_to_wb(struct inode *inode) return inode->i_wb; } +static inline struct cgroup_subsys_state * +inode_to_wb_blkcg_css(struct inode *inode) +{ + return inode_to_wb(inode)->blkcg_css; +} + struct wb_iter { int start_blkcg_id; struct radix_tree_iter tree_iter; @@ -510,6 +516,12 @@ static inline void wb_blkcg_offline(struct blkcg *blkcg) { } +static inline struct cgroup_subsys_state * +inode_to_wb_blkcg_css(struct inode *inode) +{ + return blkcg_root_css; +} + struct wb_iter { int next_id; }; |