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block: change ->make_request_fn() and users to return a queue cookie

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No functional changes in this patch, but it prepares us for returning
a more useful cookie related to the IO that was queued up.

Signed-off-by: Jens Axboe <axboe@fb.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Acked-by: Keith Busch <keith.busch@intel.com>
This commit is contained in:
Jens Axboe 2015-11-05 10:41:16 -07:00
parent 8e483ed134
commit dece16353e
28 changed files with 127 additions and 71 deletions
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2
include/linux/fs.h
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@ -2625,7 +2625,7 @@ static inline void remove_inode_hash(struct inode *inode)
extern void inode_sb_list_add(struct inode *inode);
#ifdef CONFIG_BLOCK
extern void submit_bio(int, struct bio *);
extern blk_qc_t submit_bio(int, struct bio *);
extern int bdev_read_only(struct block_device *);
#endif
extern int set_blocksize(struct block_device *, int);