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authorChris Mason <chris.mason@oracle.com>2008-04-09 16:28:12 -0400
committerChris Mason <chris.mason@oracle.com>2008-09-25 11:04:01 -0400
commitce9adaa5a792c2099a83246265eb4055bc38b6b8 (patch)
tree3ac03bb73cd3aad0c0b194d387cbb5b136c92fa7 /fs/btrfs/transaction.c
parent728131d8e40c2a47c59ca91a806299c4708029f9 (diff)
Btrfs: Do metadata checksums for reads via a workqueue
Before, metadata checksumming was done by the callers of read_tree_block, which would set EXTENT_CSUM bits in the extent tree to show that a given range of pages was already checksummed and didn't need to be verified again. But, those bits could go away via try_to_releasepage, and the end result was bogus checksum failures on pages that never left the cache. The new code validates checksums when the page is read. It is a little tricky because metadata blocks can span pages and a single read may end up going via multiple bios. Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/transaction.c')
-rw-r--r--fs/btrfs/transaction.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 5e9f69244f9..1ed179c020a 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -843,7 +843,7 @@ void btrfs_transaction_flush_work(struct btrfs_root *root)
void __init btrfs_init_transaction_sys(void)
{
- trans_wq = create_workqueue("btrfs");
+ trans_wq = create_workqueue("btrfs-transaction");
}
void btrfs_exit_transaction_sys(void)