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| author |   Tejun Heo <tj@kernel.org> | 2014-09-08 08:04:01 +0900 |
|---|---|---|
| committer |   Jens Axboe <axboe@fb.com> | 2014-09-08 10:00:43 -0600 |
| commit | 018a17bdc8658ad448497c84d4ba21b6985820ec (patch) | |
| tree | 77bfb4ea1b75452dd68817d59770e8d1c6bd37ec /include/linux/backing-dev.h | |
| parent | bdi: explain the dirty list transferring in bdi_destroy() (diff) | |
| download | linux-dev-018a17bdc8658ad448497c84d4ba21b6985820ec.tar.xz linux-dev-018a17bdc8658ad448497c84d4ba21b6985820ec.zip | |
bdi: reimplement bdev_inode_switch_bdi()
A block_device may be attached to different gendisks and thus
different bdis over time. bdev_inode_switch_bdi() is used to switch
the associated bdi. The function assumes that the inode could be
dirty and transfers it between bdis if so. This is a bit nasty in
that it reaches into bdi internals.
This patch reimplements the function so that it writes out the inode
if dirty. This is a lot simpler and can be implemented without
exposing bdi internals.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux/backing-dev.h')
| -rw-r--r-- | include/linux/backing-dev.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index 2103a7fa3fd8..5da6012b7a14 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -121,7 +121,6 @@ void bdi_start_background_writeback(struct backing_dev_info *bdi); void bdi_writeback_workfn(struct work_struct *work); int bdi_has_dirty_io(struct backing_dev_info *bdi); void bdi_wakeup_thread_delayed(struct backing_dev_info *bdi); -void bdi_lock_two(struct bdi_writeback *wb1, struct bdi_writeback *wb2); extern spinlock_t bdi_lock; extern struct list_head bdi_list; |