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authorNeilBrown <neilb@cse.unsw.edu.au>2005-06-21 17:17:27 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-21 19:07:47 -0700
commita654b9d8f851f4ca02649d5825cbe6c608adb10c (patch)
tree747301647f619a9f1dd48f4d6be96b5e35d2484c /include/linux/raid/md_k.h
parent3d310eb7b3df1252e8595d059d982b0a9825a137 (diff)
[PATCH] md: allow md intent bitmap to be stored near the superblock.
This provides an alternate to storing the bitmap in a separate file. The bitmap can be stored at a given offset from the superblock. Obviously the creator of the array must make sure this doesn't intersect with data.... After is good for version-0.90 superblocks. 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/md_k.h')
-rw-r--r--include/linux/raid/md_k.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h
index 3e977025cf4..a3725b57fb7 100644
--- a/include/linux/raid/md_k.h
+++ b/include/linux/raid/md_k.h
@@ -273,6 +273,10 @@ struct mddev_s
struct bitmap *bitmap; /* the bitmap for the device */
struct file *bitmap_file; /* the bitmap file */
+ long bitmap_offset; /* offset from superblock of
+ * start of bitmap. May be
+ * negative, but not '0'
+ */
struct list_head all_mddevs;
};