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| author | Tejun Heo <tj@kernel.org> | 2015-05-23 00:13:33 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-06-02 17:33:34 +0300 |
| commit | a212b105b07d75b48b1a166378282e8a77fbf53d (patch) | |
| tree | a4c44f26ec1986ee4aefdd9c99a7cb99a8d527ca /fs/block_dev.c | |
| parent | 66114cad64bf76a155fec1f0fff0de771cf909d5 (diff) | |
| download | linux-a212b105b07d75b48b1a166378282e8a77fbf53d.tar.xz | |
bdi: make inode_to_bdi() inline
Now that bdi definitions are moved to backing-dev-defs.h,
backing-dev.h can include blkdev.h and inline inode_to_bdi() without
worrying about introducing circular include dependency. The function
gets called from hot paths and fairly trivial.
This patch makes inode_to_bdi() and sb_is_blkdev_sb() that the
function calls inline. blockdev_superblock and noop_backing_dev_info
are EXPORT_GPL'd to allow the inline functions to be used from
modules.
While at it, make sb_is_blkdev_sb() return bool instead of int.
v2: Fixed typo in description as suggested by Jan.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'fs/block_dev.c')
| -rw-r--r-- | fs/block_dev.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index e545cbfbe5b2..f04c873a7365 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -547,7 +547,8 @@ static struct file_system_type bd_type = { .kill_sb = kill_anon_super, }; -static struct super_block *blockdev_superblock __read_mostly; +struct super_block *blockdev_superblock __read_mostly; +EXPORT_SYMBOL_GPL(blockdev_superblock); void __init bdev_cache_init(void) { @@ -688,11 +689,6 @@ static struct block_device *bd_acquire(struct inode *inode) return bdev; } -int sb_is_blkdev_sb(struct super_block *sb) -{ - return sb == blockdev_superblock; -} - /* Call when you free inode */ void bd_forget(struct inode *inode) |