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authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-08 13:28:33 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-08 13:28:33 -0800
commit2943c833222ef87c111ee0c6b7b8519ad2983e99 (patch)
tree0ef8cc4f72a63b325e7ae858ec68822ec4f3c64f /include
parent98793265b429a3f0b3f1750e74d67cd4d740d162 (diff)
parent19d671695e1931ebfd75b2b888778201aefe35ca (diff)
Merge tag 'md-3.3' of git://neil.brown.name/md
md update for 3.3 Big change is new hot-replacement. A slot in an array can hold 2 devices - one that wants-replacement and one that is the replacement. Once the replacement is built - either from the original or (in the case of errors) from elsewhere, the wants-replacement device will be removed. * tag 'md-3.3' of git://neil.brown.name/md: (36 commits) md/raid1: Mark device want_replacement when we see a write error. md/raid1: If there is a spare and a want_replacement device, start replacement. md/raid1: recognise replacements when assembling arrays. md/raid1: handle activation of replacement device when recovery completes. md/raid1: Allow a failed replacement device to be removed. md/raid1: Allocate spare to store replacement devices and their bios. md/raid1: Replace use of mddev->raid_disks with conf->raid_disks. md/raid10: If there is a spare and a want_replacement device, start replacement. md/raid10: recognise replacements when assembling array. md/raid10: Allow replacement device to be replace old drive. md/raid10: handle recovery of replacement devices. md/raid10: Handle replacement devices during resync. md/raid10: writes should get directed to replacement as well as original. md/raid10: allow removal of failed replacement devices. md/raid10: preferentially read from replacement device if possible. md/raid10: change read_balance to return an rdev md/raid10: prepare data structures for handling replacement. md/raid5: Mark device want_replacement when we see a write error. md/raid5: If there is a spare and a want_replacement device, start replacement. md/raid5: recognise replacements when assembling array. ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/raid/md_p.h7
-rw-r--r--include/linux/raid/pq.h2
2 files changed, 6 insertions, 3 deletions
diff --git a/include/linux/raid/md_p.h b/include/linux/raid/md_p.h
index 9e65d9e2066..6f6df86f1ae 100644
--- a/include/linux/raid/md_p.h
+++ b/include/linux/raid/md_p.h
@@ -277,7 +277,10 @@ struct mdp_superblock_1 {
*/
#define MD_FEATURE_RESHAPE_ACTIVE 4
#define MD_FEATURE_BAD_BLOCKS 8 /* badblock list is not empty */
-
-#define MD_FEATURE_ALL (1|2|4|8)
+#define MD_FEATURE_REPLACEMENT 16 /* This device is replacing an
+ * active device with same 'role'.
+ * 'recovery_offset' is also set.
+ */
+#define MD_FEATURE_ALL (1|2|4|8|16)
#endif
diff --git a/include/linux/raid/pq.h b/include/linux/raid/pq.h
index 2b59cc82439..53272e9860a 100644
--- a/include/linux/raid/pq.h
+++ b/include/linux/raid/pq.h
@@ -132,7 +132,7 @@ void raid6_dual_recov(int disks, size_t bytes, int faila, int failb,
PROT_READ|PROT_WRITE, \
MAP_PRIVATE|MAP_ANONYMOUS,\
0, 0))
-# define free_pages(x, y) munmap((void *)(x), (y)*PAGE_SIZE)
+# define free_pages(x, y) munmap((void *)(x), PAGE_SIZE << (y))
static inline void cpu_relax(void)
{