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Btrfs: integrate integrity check module into btrfs

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This is the last part of the patch series. It modifies the btrfs
code to use the integrity check module if configured to do so
with the define BTRFS_FS_CHECK_INTEGRITY. If this define is not set,
the only effective change is that code is added that handles the
mount option to activate the integrity check. If the mount option is
set and the define BTRFS_FS_CHECK_INTEGRITY is not set, that code
complains in the log and the mount fails with EINVAL.

Add the mount option to activate the usage of the integrity check
code.
Add invocation of btrfs integrity check code init and cleanup
function on mount and umount, respectively.
Add hook to call btrfs integrity check code version of
submit_bh/submit_bio.

Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
This commit is contained in:
Stefan Behrens
2011-11-09 13:44:05 +01:00
parent f11e4d7f53
commit 21adbd5cbb
6 changed files with 79 additions and 11 deletions
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5
fs/btrfs/scrub.c
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@@ -25,6 +25,7 @@
#include "transaction.h"
#include "backref.h"
#include "extent_io.h"
#include "check-integrity.h"
/*
* This is only the first step towards a full-features scrub. It reads all
@@ -732,7 +733,7 @@ static int scrub_fixup_io(int rw, struct block_device *bdev, sector_t sector,
bio_add_page(bio, page, PAGE_SIZE, 0);
bio->bi_end_io = scrub_fixup_end_io;
bio->bi_private = &complete;
submit_bio(rw, bio);
btrfsic_submit_bio(rw, bio);
/* this will also unplug the queue */
wait_for_completion(&complete);
@@ -958,7 +959,7 @@ static int scrub_submit(struct scrub_dev *sdev)
sdev->curr = -1;
atomic_inc(&sdev->in_flight);
submit_bio(READ, sbio->bio);
btrfsic_submit_bio(READ, sbio->bio);
return 0;
}