xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

md: load/store badblock list from v1.x metadata

Browse Source 
Space must have been allocated when array was created.
A feature flag is set when the badblock list is non-empty, to
ensure old kernels don't load and trust the whole device.

We only update the on-disk badblocklist when it has changed.
If the badblocklist (or other metadata) is stored on a bad block, we
don't cope very well.

If metadata has no room for bad block, flag bad-blocks as disabled,
and do the same for 0.90 metadata.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown
2011-07-28 11:31:47 +10:00
parent 34b343cff4
commit 2699b67223
3 changed files with 116 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/md/md.h
View File

@@ -55,7 +55,7 @@ struct mdk_rdev_s
struct block_device *meta_bdev;
struct block_device *bdev; /* block device handle */
struct page *sb_page;
struct page *sb_page, *bb_page;
int sb_loaded;
__u64 sb_events;
sector_t data_offset; /* start of data in array */
@@ -127,6 +127,9 @@ struct mdk_rdev_s
u64 *page; /* badblock list */
int changed;
seqlock_t lock;
sector_t sector;
sector_t size; /* in sectors */
} badblocks;
};