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| author | Tejun Heo | 2015-06-17 00:48:30 +0200 |
|---|---|---|
| committer | Jens Axboe | 2015-06-17 20:47:37 +0200 |
| commit | dd73e4b7df9589fa603fc6d128b4f6cabb250e8e (patch) | |
| tree | e729cdad58a661c89cf2203b3f2b90de3cf1e6e5 /include/linux/backing-dev.h | |
| parent | v9fs: fix error handling in v9fs_session_init() (diff) | |
| download | kernel-qcow2-linux-dd73e4b7df9589fa603fc6d128b4f6cabb250e8e.tar.gz kernel-qcow2-linux-dd73e4b7df9589fa603fc6d128b4f6cabb250e8e.tar.xz kernel-qcow2-linux-dd73e4b7df9589fa603fc6d128b4f6cabb250e8e.zip | |
writeback: do foreign inode detection iff cgroup writeback is enabled
Currently, even when a filesystem doesn't set the FS_CGROUP_WRITEBACK
flag, if the filesystem uses wbc_init_bio() and wbc_account_io(), the
foreign inode detection and migration logic still ends up activating
cgroup writeback which is unexpected. This patch ensures that the
foreign inode detection logic stays disabled when inode_cgwb_enabled()
is false by not associating writeback_control's with bdi_writeback's.
This also avoids unnecessary operations in wbc_init_bio(),
wbc_account_io() and wbc_detach_inode() for filesystems which don't
support cgroup writeback.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux/backing-dev.h')
0 files changed, 0 insertions, 0 deletions