diff options
| author | Jan Kara <jack@suse.cz> | 2023-09-27 11:34:07 +0200 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2024-03-26 18:19:40 -0400 |
| commit | dd0bd429125045e0b5bd87dea1c43b2e593f6213 (patch) | |
| tree | 0f9672941713bc3fa67c836a322e99b7522a5adf /include/linux/blkdev.h | |
| parent | 3721c63d300289a9ab69abe795d8112465f492db (diff) | |
block: Provide bdev_open_* functions
[ Upstream commit e719b4d156749f02eafed31a3c515f2aa9dcc72a ]
Create struct bdev_handle that contains all parameters that need to be
passed to blkdev_put() and provide bdev_open_* functions that return
this structure instead of plain bdev pointer. This will eventually allow
us to pass one more argument to blkdev_put() (renamed to bdev_release())
without too much hassle.
Acked-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20230927093442.25915-1-jack@suse.cz
Signed-off-by: Christian Brauner <brauner@kernel.org>
Stable-dep-of: 0f28be64d132 ("erofs: fix lockdep false positives on initializing erofs_pseudo_mnt")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index f59fcd5b499a..5b6e86b2c37a 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1479,14 +1479,24 @@ extern const struct blk_holder_ops fs_holder_ops; #define sb_open_mode(flags) \ (BLK_OPEN_READ | (((flags) & SB_RDONLY) ? 0 : BLK_OPEN_WRITE)) +struct bdev_handle { + struct block_device *bdev; + void *holder; +}; + struct block_device *blkdev_get_by_dev(dev_t dev, blk_mode_t mode, void *holder, const struct blk_holder_ops *hops); struct block_device *blkdev_get_by_path(const char *path, blk_mode_t mode, void *holder, const struct blk_holder_ops *hops); +struct bdev_handle *bdev_open_by_dev(dev_t dev, blk_mode_t mode, void *holder, + const struct blk_holder_ops *hops); +struct bdev_handle *bdev_open_by_path(const char *path, blk_mode_t mode, + void *holder, const struct blk_holder_ops *hops); int bd_prepare_to_claim(struct block_device *bdev, void *holder, const struct blk_holder_ops *hops); void bd_abort_claiming(struct block_device *bdev, void *holder); void blkdev_put(struct block_device *bdev, void *holder); +void bdev_release(struct bdev_handle *handle); /* just for blk-cgroup, don't use elsewhere */ struct block_device *blkdev_get_no_open(dev_t dev); |