aboutsummaryrefslogtreecommitdiffstats
path: root/lib/raid6/recov.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2012-05-23 20:08:40 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-23 20:08:40 -0400
commitc80ddb526331a72c9e9d1480f85f6fd7c74e3d2d (patch)
tree0212803a009f171990032abb94fad84156baa153 /lib/raid6/recov.c
parent2c13bc0f8f0d3e13b42be70bf74fec8e56b58324 (diff)
parent1dff2b87a34a1ac1d1898ea109bf97ed396aca53 (diff)
Merge tag 'md-3.5' of git://neil.brown.name/md
Pull md updates from NeilBrown: "It's been a busy cycle for md - lots of fun stuff here.. if you like this kind of thing :-) Main features: - RAID10 arrays can be reshaped - adding and removing devices and changing chunks (not 'far' array though) - allow RAID5 arrays to be reshaped with a backup file (not tested yet, but the priciple works fine for RAID10). - arrays can be reshaped while a bitmap is present - you no longer need to remove it first - SSSE3 support for RAID6 syndrome calculations and of course a number of minor fixes etc." * tag 'md-3.5' of git://neil.brown.name/md: (56 commits) md/bitmap: record the space available for the bitmap in the superblock. md/raid10: Remove extras after reshape to smaller number of devices. md/raid5: improve removal of extra devices after reshape. md: check the return of mddev_find() MD RAID1: Further conditionalize 'fullsync' DM RAID: Use md_error() in place of simply setting Faulty bit DM RAID: Record and handle missing devices DM RAID: Set recovery flags on resume md/raid5: Allow reshape while a bitmap is present. md/raid10: resize bitmap when required during reshape. md: allow array to be resized while bitmap is present. md/bitmap: make sure reshape request are reflected in superblock. md/bitmap: add bitmap_resize function to allow bitmap resizing. md/bitmap: use DIV_ROUND_UP instead of open-code md/bitmap: create a 'struct bitmap_counts' substructure of 'struct bitmap' md/bitmap: make bitmap bitops atomic. md/bitmap: make _page_attr bitops atomic. md/bitmap: merge bitmap_file_unmap and bitmap_file_put. md/bitmap: remove async freeing of bitmap file. md/bitmap: convert some spin_lock_irqsave to spin_lock_irq ...
Diffstat (limited to 'lib/raid6/recov.c')
-rw-r--r--lib/raid6/recov.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/lib/raid6/recov.c b/lib/raid6/recov.c
index fe275d7b6b36..1805a5cc5daa 100644
--- a/lib/raid6/recov.c
+++ b/lib/raid6/recov.c
@@ -22,7 +22,7 @@
22#include <linux/raid/pq.h> 22#include <linux/raid/pq.h>
23 23
24/* Recover two failed data blocks. */ 24/* Recover two failed data blocks. */
25void raid6_2data_recov(int disks, size_t bytes, int faila, int failb, 25void raid6_2data_recov_intx1(int disks, size_t bytes, int faila, int failb,
26 void **ptrs) 26 void **ptrs)
27{ 27{
28 u8 *p, *q, *dp, *dq; 28 u8 *p, *q, *dp, *dq;
@@ -64,10 +64,9 @@ void raid6_2data_recov(int disks, size_t bytes, int faila, int failb,
64 p++; q++; 64 p++; q++;
65 } 65 }
66} 66}
67EXPORT_SYMBOL_GPL(raid6_2data_recov);
68 67
69/* Recover failure of one data block plus the P block */ 68/* Recover failure of one data block plus the P block */
70void raid6_datap_recov(int disks, size_t bytes, int faila, void **ptrs) 69void raid6_datap_recov_intx1(int disks, size_t bytes, int faila, void **ptrs)
71{ 70{
72 u8 *p, *q, *dq; 71 u8 *p, *q, *dq;
73 const u8 *qmul; /* Q multiplier table */ 72 const u8 *qmul; /* Q multiplier table */
@@ -96,7 +95,15 @@ void raid6_datap_recov(int disks, size_t bytes, int faila, void **ptrs)
96 q++; dq++; 95 q++; dq++;
97 } 96 }
98} 97}
99EXPORT_SYMBOL_GPL(raid6_datap_recov); 98
99
100const struct raid6_recov_calls raid6_recov_intx1 = {
101 .data2 = raid6_2data_recov_intx1,
102 .datap = raid6_datap_recov_intx1,
103 .valid = NULL,
104 .name = "intx1",
105 .priority = 0,
106};
100 107
101#ifndef __KERNEL__ 108#ifndef __KERNEL__
102/* Testing only */ 109/* Testing only */