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authorNeilBrown <neilb@cse.unsw.edu.au>2005-06-21 17:17:23 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-21 19:07:46 -0700
commit191ea9b2c7cc3ebbe0678834ab710d7d95ad3f9a (patch)
tree25ccd0d191742f4e25f37784370520d254aacc12 /include/linux
parentaa3163f81654fa057039258e32a6811147bf0c14 (diff)
[PATCH] md: raid1 support for bitmap intent logging
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')
-rw-r--r--include/linux/raid/raid1.h16
1 files changed, 14 insertions, 2 deletions
diff --git a/include/linux/raid/raid1.h b/include/linux/raid/raid1.h
index abbfdd9afe1..9d93cf12e89 100644
--- a/include/linux/raid/raid1.h
+++ b/include/linux/raid/raid1.h
@@ -36,12 +36,21 @@ struct r1_private_data_s {
spinlock_t device_lock;
struct list_head retry_list;
+ /* queue pending writes and submit them on unplug */
+ struct bio_list pending_bio_list;
+ /* queue of writes that have been unplugged */
+ struct bio_list flushing_bio_list;
+
/* for use when syncing mirrors: */
spinlock_t resync_lock;
- int nr_pending;
- int barrier;
+ int nr_pending;
+ int barrier;
sector_t next_resync;
+ int fullsync; /* set to 1 if a full sync is needed,
+ * (fresh device added).
+ * Cleared when a sync completes.
+ */
wait_queue_head_t wait_idle;
wait_queue_head_t wait_resume;
@@ -85,14 +94,17 @@ struct r1bio_s {
int read_disk;
struct list_head retry_list;
+ struct bitmap_update *bitmap_update;
/*
* if the IO is in WRITE direction, then multiple bios are used.
* We choose the number when they are allocated.
*/
struct bio *bios[0];
+ /* DO NOT PUT ANY NEW FIELDS HERE - bios array is contiguously alloced*/
};
/* bits for r1bio.state */
#define R1BIO_Uptodate 0
#define R1BIO_IsSync 1
+#define R1BIO_Degraded 2
#endif