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UBI: Implement UBI_METAONLY

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UBI_METAONLY is a new open mode for UBI volumes, it indicates
that only meta data is being changed.
Meta data in terms of UBI volumes means data which is stored in the
UBI volume table but not on the volume itself.
While it does not interfere with UBI_READONLY and UBI_READWRITE
it is not allowed to use UBI_METAONLY together with UBI_EXCLUSIVE.

Cc: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Cc: Andrew Murray <amurray@embedded-bits.co.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
Tested-by: Guido Martínez <guido@vanguardiasur.com.ar>
Reviewed-by: Guido Martínez <guido@vanguardiasur.com.ar>
Tested-by: Christoph Fritz <chf.fritz@googlemail.com>
Tested-by: Andrew Murray <amurray@embedded-bits.co.uk>
This commit is contained in:
Richard Weinberger 2014-11-24 22:30:09 +01:00
commit fafdd2bf26
4 changed files with 28 additions and 8 deletions
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5
include/linux/mtd/ubi.h
View file

@ -34,11 +34,14 @@
* UBI_READONLY: read-only mode
* UBI_READWRITE: read-write mode
* UBI_EXCLUSIVE: exclusive mode
* UBI_METAONLY: modify only the volume meta-data,
* i.e. the data stored in the volume table, but not in any of volume LEBs.
*/
enum {
UBI_READONLY = 1,
UBI_READWRITE,
UBI_EXCLUSIVE
UBI_EXCLUSIVE,
UBI_METAONLY
};
/**