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authorLiu Bo <bo.li.liu@oracle.com>2015-03-17 09:34:16 +0300
committerChris Mason <clm@fb.com>2015-03-27 04:10:25 +0300
commite56a951e01bf55f49533c47ad2ce61dbd613a3f3 (patch)
treea56ee1aa118e9e8a3ef8018316cf6923ed52c83b /fs/btrfs/disk-io.c
parent727b9784b6085c99c2f836bf4fcc2848dc9cf904 (diff)
downloadlinux-e56a951e01bf55f49533c47ad2ce61dbd613a3f3.tar.xz
Btrfs: Remove the check for old-style mkfs
This was used to make sure that a fresh btrfs from an older mkfs.btrfs, but it also allows us to mount a buggy btrfs if this btrfs has the right superblock head part but has something wrong with chunk tree part[1], and after that we can hit BUG_ON()s set in the code to prevent something impossible. Since David has released "Btrfs progs v3.19-rc2", just remove the check, if anyone who wants to make a fresh btrfs, please use the latest one. [1]: http://www.spinics.net/lists/linux-btrfs/msg42358.html Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Reviewed-by: Omar Sandoval <osandov@osandov.com> Reviewed-by: David Sterba <dsterba@suse.cz> Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs/btrfs/disk-io.c')
-rw-r--r--fs/btrfs/disk-io.c6
1 files changed, 0 insertions, 6 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 23c49ab2de4c..568cc4e3d80e 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -419,12 +419,6 @@ static int btrfs_check_super_csum(char *raw_disk_sb)
if (memcmp(raw_disk_sb, result, csum_size))
ret = 1;
-
- if (ret && btrfs_super_generation(disk_sb) < 10) {
- printk(KERN_WARNING
- "BTRFS: super block crcs don't match, older mkfs detected\n");
- ret = 0;
- }
}
if (csum_type >= ARRAY_SIZE(btrfs_csum_sizes)) {