summaryrefslogtreecommitdiff
path: root/libre/linux-libre/bitmap-enable-booting-for-dm-md-raid1.patch
diff options
context:
space:
mode:
Diffstat (limited to 'libre/linux-libre/bitmap-enable-booting-for-dm-md-raid1.patch')
-rw-r--r--libre/linux-libre/bitmap-enable-booting-for-dm-md-raid1.patch83
1 files changed, 0 insertions, 83 deletions
diff --git a/libre/linux-libre/bitmap-enable-booting-for-dm-md-raid1.patch b/libre/linux-libre/bitmap-enable-booting-for-dm-md-raid1.patch
deleted file mode 100644
index 7b29e82f7..000000000
--- a/libre/linux-libre/bitmap-enable-booting-for-dm-md-raid1.patch
+++ /dev/null
@@ -1,83 +0,0 @@
-Subject: [PATCH] Enable loading of bitmaps for dm-md-raid1.
-
-This is also a temporary hack to systems with junk in the rest
-of the bitmap super (instead of zeroes) to boot. This is done by
-checking mddev->sync_super (which is exclusively set by dm-raid)
-is null.
-
-These changes also include zeroing of most bitmap pages while
-allocating so we are sure that the junk is not coming from memory.
-
-Signed-off-by: Neil Brown <neilb@suse.de>
-Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
----
-diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
-index 135a090..dfa5ef3 100644
---- a/drivers/md/bitmap.c
-+++ b/drivers/md/bitmap.c
-@@ -494,7 +494,7 @@ static int bitmap_new_disk_sb(struct bitmap *bitmap)
- bitmap_super_t *sb;
- unsigned long chunksize, daemon_sleep, write_behind;
-
-- bitmap->storage.sb_page = alloc_page(GFP_KERNEL);
-+ bitmap->storage.sb_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
- if (bitmap->storage.sb_page == NULL)
- return -ENOMEM;
- bitmap->storage.sb_page->index = 0;
-@@ -541,6 +541,7 @@ static int bitmap_new_disk_sb(struct bitmap *bitmap)
- sb->state = cpu_to_le32(bitmap->flags);
- bitmap->events_cleared = bitmap->mddev->events;
- sb->events_cleared = cpu_to_le64(bitmap->mddev->events);
-+ bitmap->mddev->bitmap_info.nodes = 0;
-
- kunmap_atomic(sb);
-
-@@ -568,7 +569,7 @@ static int bitmap_read_sb(struct bitmap *bitmap)
- goto out_no_sb;
- }
- /* page 0 is the superblock, read it... */
-- sb_page = alloc_page(GFP_KERNEL);
-+ sb_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
- if (!sb_page)
- return -ENOMEM;
- bitmap->storage.sb_page = sb_page;
-@@ -611,8 +612,15 @@ re_read:
- daemon_sleep = le32_to_cpu(sb->daemon_sleep) * HZ;
- write_behind = le32_to_cpu(sb->write_behind);
- sectors_reserved = le32_to_cpu(sb->sectors_reserved);
-- nodes = le32_to_cpu(sb->nodes);
-- strlcpy(bitmap->mddev->bitmap_info.cluster_name, sb->cluster_name, 64);
-+ /* XXX: This is an ugly hack to ensure that we don't use clustering
-+ in case dm-raid is in use and the nodes written in bitmap_sb
-+ is erroneous.
-+ */
-+ if (!bitmap->mddev->sync_super) {
-+ nodes = le32_to_cpu(sb->nodes);
-+ strlcpy(bitmap->mddev->bitmap_info.cluster_name,
-+ sb->cluster_name, 64);
-+ }
-
- /* verify that the bitmap-specific fields are valid */
- if (sb->magic != cpu_to_le32(BITMAP_MAGIC))
-@@ -649,7 +657,7 @@ re_read:
- goto out;
- }
- events = le64_to_cpu(sb->events);
-- if (!nodes && (events < bitmap->mddev->events)) {
-+ if (err == 0 && !nodes && (events < bitmap->mddev->events)) {
- printk(KERN_INFO
- "%s: bitmap file is out of date (%llu < %llu) "
- "-- forcing full recovery\n",
-diff --git a/drivers/md/md.c b/drivers/md/md.c
-index 4dbed4a..6bd8bc3 100644
---- a/drivers/md/md.c
-+++ b/drivers/md/md.c
-@@ -7415,7 +7415,7 @@ int md_setup_cluster(struct mddev *mddev, int nodes)
- err = request_module("md-cluster");
- if (err) {
- pr_err("md-cluster module not found.\n");
-- return err;
-+ return -ENOENT;
- }
-
- spin_lock(&pers_lock);