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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-04-04 15:35:38 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-04-04 15:35:38 -0700 |
| commit | 370d2662d569f22ac3d598cd4475617cd910c759 (patch) | |
| tree | 127b1cd120174be71ce74488694a48df6c87571e /drivers/mtd/ubi/ubi.h | |
| parent | d15fee814d8d30bbb4859ef8fef7a1f96327635b (diff) | |
| parent | d56030ac25d383218045c5d87e98e0494d6af3ad (diff) | |
Merge tag 'upstream-3.15-rc1' of git://git.infradead.org/linux-ubifs
Pull ubifs updates from Artem Bityutskiy:
"This pull request includes the 'ubiblock' driver which provides R/O
block access to UBI volumes. It is useful for those who want to use
squashfs on top of raw flash devices. UBI will provide bit-flip
handling and wear-levelling in this case (e.g., if there are other UBI
volumes with R/W UBIFS too).
The driver is actually pretty small and it is part of the UBI kernel
subsystem. Delivered by Ezequiel Garcia, along with a piece of
documentation on the MTD web site and the user-space tool for creating
and removing block devices"
* tag 'upstream-3.15-rc1' of git://git.infradead.org/linux-ubifs:
UBI: block: Remove __initdata from ubiblock_param_ops
UBI: make UBI_IOCVOLCRBLK take a parameter for future usage
UBI: rename block device ioctls
UBI: block: Use ENOSYS as return value when CONFIG_UBIBLOCK=n
UBI: block: Add CONFIG_BLOCK dependency
UBI: block: Use 'u64' for the 64-bit dividend
UBI: block: Mark init-only symbol as __initdata
UBI: block: do not use term "attach"
UBI: R/O block driver on top of UBI volumes
Diffstat (limited to 'drivers/mtd/ubi/ubi.h')
| -rw-r--r-- | drivers/mtd/ubi/ubi.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h index 8ea6297a208f..0ba8b0a28838 100644 --- a/drivers/mtd/ubi/ubi.h +++ b/drivers/mtd/ubi/ubi.h @@ -864,6 +864,26 @@ int ubi_update_fastmap(struct ubi_device *ubi); int ubi_scan_fastmap(struct ubi_device *ubi, struct ubi_attach_info *ai, int fm_anchor); +/* block.c */ +#ifdef CONFIG_MTD_UBI_BLOCK +int ubiblock_init(void); +void ubiblock_exit(void); +int ubiblock_create(struct ubi_volume_info *vi); +int ubiblock_remove(struct ubi_volume_info *vi); +#else +static inline int ubiblock_init(void) { return 0; } +static inline void ubiblock_exit(void) {} +static inline int ubiblock_create(struct ubi_volume_info *vi) +{ + return -ENOSYS; +} +static inline int ubiblock_remove(struct ubi_volume_info *vi) +{ + return -ENOSYS; +} +#endif + + /* * ubi_rb_for_each_entry - walk an RB-tree. * @rb: a pointer to type 'struct rb_node' to use as a loop counter |