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| author | Tejun Heo <tj@kernel.org> | 2019-08-26 09:06:53 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-08-27 09:22:38 -0600 |
| commit | 34f8fe501f0624de115d087680c84000b5d9abc9 (patch) | |
| tree | 7c21102bb603a5ac0519fcfded63f9df89c25736 /LICENSES | |
| parent | 5b9cce4c7eb0696558dfd4946074ae1fb9d8f05d (diff) | |
| download | linux-stable-34f8fe501f0624de115d087680c84000b5d9abc9.tar.gz linux-stable-34f8fe501f0624de115d087680c84000b5d9abc9.tar.bz2 linux-stable-34f8fe501f0624de115d087680c84000b5d9abc9.zip | |
bdi: Add bdi->id
There currently is no way to universally identify and lookup a bdi
without holding a reference and pointer to it. This patch adds an
non-recycling bdi->id and implements bdi_get_by_id() which looks up
bdis by their ids. This will be used by memcg foreign inode flushing.
I left bdi_list alone for simplicity and because while rb_tree does
support rcu assignment it doesn't seem to guarantee lossless walk when
walk is racing aginst tree rebalance operations.
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'LICENSES')
0 files changed, 0 insertions, 0 deletions