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Btrfs: btrfs_check_super_valid: Allow 4096 as stripesize 

Older btrfs-progs/mkfs.btrfs sets 4096 as the stripesize. Hence
restricting stripesize to be equal to sectorsize would cause super block
validation to return an error on architectures where PAGE_SIZE is not
equal to 4096.

Hence as a workaround, this commit allows stripesize to be set to 4096
bytes.

Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Chandan Rajendra 2016-06-16 22:07:58 +05:30 committed by David Sterba
parent 89c5a5441d
commit dd5c93111d
1 changed files with 2 additions and 1 deletions
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3
fs/btrfs/disk-io.c
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@ -4134,7 +4134,8 @@ static int btrfs_check_super_valid(struct btrfs_fs_info *fs_info,
ret = -EINVAL;
}
if (!is_power_of_2(btrfs_super_stripesize(sb)) ||
btrfs_super_stripesize(sb) != sectorsize) {
((btrfs_super_stripesize(sb) != sectorsize) &&
(btrfs_super_stripesize(sb) != 4096))) {
btrfs_err(fs_info, "invalid stripesize %u",
btrfs_super_stripesize(sb));
ret = -EINVAL;