xfs: verify btree blocks as they are read from disk
Add an btree block verify callback function and pass it into the
buffer read functions. Because each different btree block type
requires different verification, add a function to the ops structure
that is called from the generic code.
Also, propagate the verification callback functions through the
readahead functions, and into the external bmap and bulkstat inode
readahead code that uses the generic btree buffer read functions.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Phil White <pwhite@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h
index c9cf2d0..3a4c314 100644
--- a/fs/xfs/xfs_btree.h
+++ b/fs/xfs/xfs_btree.h
@@ -188,6 +188,7 @@
__int64_t (*key_diff)(struct xfs_btree_cur *cur,
union xfs_btree_key *key);
+ void (*read_verify)(struct xfs_buf *bp);
#ifdef DEBUG
/* check that k1 is lower than k2 */
int (*keys_inorder)(struct xfs_btree_cur *cur,
@@ -355,7 +356,8 @@
xfs_fsblock_t fsbno, /* file system block number */
uint lock, /* lock flags for read_buf */
struct xfs_buf **bpp, /* buffer for fsbno */
- int refval);/* ref count value for buffer */
+ int refval, /* ref count value for buffer */
+ xfs_buf_iodone_t verify);
/*
* Read-ahead the block, don't wait for it, don't return a buffer.
@@ -365,7 +367,8 @@
xfs_btree_reada_bufl(
struct xfs_mount *mp, /* file system mount point */
xfs_fsblock_t fsbno, /* file system block number */
- xfs_extlen_t count); /* count of filesystem blocks */
+ xfs_extlen_t count, /* count of filesystem blocks */
+ xfs_buf_iodone_t verify);
/*
* Read-ahead the block, don't wait for it, don't return a buffer.
@@ -376,7 +379,8 @@
struct xfs_mount *mp, /* file system mount point */
xfs_agnumber_t agno, /* allocation group number */
xfs_agblock_t agbno, /* allocation group block number */
- xfs_extlen_t count); /* count of filesystem blocks */
+ xfs_extlen_t count, /* count of filesystem blocks */
+ xfs_buf_iodone_t verify);
/*
* Initialise a new btree block header