diff options
| author | WeiXiong Liao <liaoweixiong@allwinnertech.com> | 2020-03-25 16:55:03 +0800 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2020-05-31 19:48:56 -0700 |
| commit | 335426c6dcdd338d6b7c939c2da15fc9c5dd4959 (patch) | |
| tree | ed06b2b7f73bf231b285720ac5cb34b32e3ca64b /include/linux/pstore_blk.h | |
| parent | 649304c936cd4d2a2128bb877044772416c7d4f5 (diff) | |
pstore/zone: Provide way to skip "broken" zone for MTD devices
One requirement to support MTD devices in pstore/zone is having a
way to declare certain regions as broken. Add this support to
pstore/zone.
The MTD driver should return -ENOMSG when encountering a bad region,
which tells pstore/zone to skip and try the next one.
Signed-off-by: WeiXiong Liao <liaoweixiong@allwinnertech.com>
Link: https://lore.kernel.org/lkml/20200511233229.27745-8-keescook@chromium.org/
Co-developed-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: //lore.kernel.org/lkml/20200512173801.222666-1-colin.king@canonical.com
Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'include/linux/pstore_blk.h')
| -rw-r--r-- | include/linux/pstore_blk.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/pstore_blk.h b/include/linux/pstore_blk.h index 4501977b1336..ccba8c068752 100644 --- a/include/linux/pstore_blk.h +++ b/include/linux/pstore_blk.h @@ -14,7 +14,8 @@ * @start_sect: start sector to block device * @sects: sectors count on buf * - * Return: On success, zero should be returned. Others mean error. + * Return: On success, zero should be returned. Others excluding -ENOMSG + * mean error. -ENOMSG means to try next zone. * * Panic write to block device must be aligned to SECTOR_SIZE. */ |