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| author |   Liu Bo <bo.li.liu@oracle.com> | 2015-03-17 14:34:16 +0800 |
|---|---|---|
| committer |   Chris Mason <clm@fb.com> | 2015-03-26 18:10:25 -0700 |
| commit | e56a951e01bf55f49533c47ad2ce61dbd613a3f3 (patch) | |
| tree | a56ee1aa118e9e8a3ef8018316cf6923ed52c83b /fs/btrfs/disk-io.c | |
| parent | btrfs: cleanup orphans while looking up default subvolume (diff) | |
| download | linux-dev-e56a951e01bf55f49533c47ad2ce61dbd613a3f3.tar.xz linux-dev-e56a951e01bf55f49533c47ad2ce61dbd613a3f3.zip | |
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.c | 6 |
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)) { |