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    bdi: make inode_to_bdi() inline · a212b105
    Tejun Heo 提交于
    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: NTejun Heo <tj@kernel.org>
    Reviewed-by: NJens Axboe <axboe@kernel.dk>
    Cc: Christoph Hellwig <hch@infradead.org>
    Signed-off-by: NJens Axboe <axboe@fb.com>
    a212b105
fs-writeback.c 43.6 KB