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authorNeilBrown <neilb@cse.unsw.edu.au>2005-09-09 16:23:53 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-09 16:39:12 -0700
commit0002b2718dd04da67c21f8a7830de8d95a9b0345 (patch)
treec84f916df71293e0e15643a8a07d9508d1404395 /include/linux/raid
parent773f7834425e83144c95fbbc553ced3c2b74b828 (diff)
[PATCH] md: limit size of sb read/written to appropriate amount
version-1 superblocks are not (normally) 4K long, and can be of variable size. Writing the full 4K can cause corruption (but only in non-default configurations). With this patch the super-block-flavour can choose a size to read, and set a size to write based on what it finds. Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/raid')
-rw-r--r--include/linux/raid/md_k.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h
index 8042f55dd32..ebce949b144 100644
--- a/include/linux/raid/md_k.h
+++ b/include/linux/raid/md_k.h
@@ -102,6 +102,7 @@ struct mdk_rdev_s
int sb_loaded;
sector_t data_offset; /* start of data in array */
sector_t sb_offset;
+ int sb_size; /* bytes in the superblock */
int preferred_minor; /* autorun support */
/* A device can be in one of three states based on two flags: