diff options
| author |   Christoph Hellwig <hch@lst.de> | 2020-06-20 09:16:41 +0200 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2020-06-24 09:16:02 -0600 |
| commit | 3f1266f1f82d7b8c72472a8921e80aa3e611fb62 (patch) | |
| tree | 93e2039e02c3a6e90a4617b590a9ae62ba6205c3 /include/linux/blkdev.h | |
| parent | block: simplify sb_is_blkdev_sb (diff) | |
| download | wireguard-linux-3f1266f1f82d7b8c72472a8921e80aa3e611fb62.tar.xz wireguard-linux-3f1266f1f82d7b8c72472a8921e80aa3e611fb62.zip | |
block: move block-related definitions out of fs.h
Move most of the block related definition out of fs.h into more suitable
headers.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index c0701237116d..cf8f692f62a9 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1918,4 +1918,50 @@ static inline void bio_end_io_acct(struct bio *bio, unsigned long start_time) } #endif /* CONFIG_BLOCK */ +int bdev_read_only(struct block_device *bdev); +int set_blocksize(struct block_device *bdev, int size); + +const char *bdevname(struct block_device *bdev, char *buffer); +struct block_device *lookup_bdev(const char *); + +void blkdev_show(struct seq_file *seqf, off_t offset); + +#define BDEVNAME_SIZE 32 /* Largest string for a blockdev identifier */ +#define BDEVT_SIZE 10 /* Largest string for MAJ:MIN for blkdev */ +#ifdef CONFIG_BLOCK +#define BLKDEV_MAJOR_MAX 512 +#else +#define BLKDEV_MAJOR_MAX 0 +#endif + +int blkdev_get(struct block_device *bdev, fmode_t mode, void *holder); +struct block_device *blkdev_get_by_path(const char *path, fmode_t mode, + void *holder); +struct block_device *blkdev_get_by_dev(dev_t dev, fmode_t mode, void *holder); +struct block_device *bd_start_claiming(struct block_device *bdev, void *holder); +void bd_abort_claiming(struct block_device *bdev, struct block_device *whole, + void *holder); +void blkdev_put(struct block_device *bdev, fmode_t mode); + +struct block_device *bdget(dev_t); +struct block_device *bdgrab(struct block_device *bdev); +void bdput(struct block_device *); + +#ifdef CONFIG_BLOCK +void invalidate_bdev(struct block_device *bdev); +int sync_blockdev(struct block_device *bdev); +#else +static inline void invalidate_bdev(struct block_device *bdev) +{ +} +static inline int sync_blockdev(struct block_device *bdev) +{ + return 0; +} #endif +int fsync_bdev(struct block_device *bdev); + +struct super_block *freeze_bdev(struct block_device *bdev); +int thaw_bdev(struct block_device *bdev, struct super_block *sb); + +#endif /* _LINUX_BLKDEV_H */ |