lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[PATCH] md: raid1 support for bitmap intent logging

Browse Source 
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>
This commit is contained in:
NeilBrown
2005-06-21 17:17:23 -07:00
committed by Linus Torvalds
parent aa3163f816
commit 191ea9b2c7
2 changed files with 168 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
include/linux/raid/raid1.h
View File

@ -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