This syncs tree-checker.c from the kernel. The main modification was to
add a open ctree flag to skip the deeper leaf checks, and plumbing this
through tree-checker.c. We need this for things like fsck or
btrfs-image that need to work with slightly corrupted file systems, and
these checks simply make us unable to look at the corrupted blocks.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Introduce a wrapper to recover raid56 data.
The logical is the same with kernel one, but with different interfaces,
since kernel ones cares the performance while in btrfs we don't care
that much.
And the interface is more caller friendly inside btrfs-progs.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Copied from kernel lib/raid6/recov.c.
Minor modifications includes:
- Rename from raid6_datap_recov_intx() to raid5_recov_datap()
- Rename parameter from faila to dest1
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Copied from kernel lib/raid6/recov.c raid6_2data_recov_intx1() function.
With the following modification:
- Rename to raid6_recov_data2() for shorter name
- s/kfree/free/g modification
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Use kernel RAID6 galois tables for later RAID6 recovery.
Galois tables file, kernel-lib/tables.c is generated by user space
program, mktable.
Galois field tables declaration, in kernel-lib/raid56.h, is completely
copied from kernel.
The mktables.c is copied from kernel with minor header/macro
modification, to ensure the generated tables.c works well in
btrfs-progs.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Introduce a new header, kernel-lib/raid56.h, for later raid56 works.
It contains 2 functions, from original btrfs-progs code:
void raid6_gen_syndrome(int disks, size_t bytes, void **ptrs);
int raid5_gen_result(int nr_devs, size_t stripe_len, int dest, void **data);
Will be expanded later and some part of it(RAID6 recover part) may keep
sync with kernel later.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
[ unify gpl header, rename header macro ]
Signed-off-by: David Sterba <dsterba@suse.com>
