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authorDave Chinner <dchinner@redhat.com>2012-11-12 22:54:08 +1100
committerBen Myers <bpm@sgi.com>2012-11-15 21:34:31 -0600
commit3d3e6f64e22c94115d47de670611bcd3ecda3796 (patch)
treeec97be647a06d5aef171333624b370cf482285b4 /fs/xfs/xfs_bmap.c
parentaf133e8606d32c2aed43870491ebbdc56feec8a8 (diff)
downloadop-kernel-dev-3d3e6f64e22c94115d47de670611bcd3ecda3796.zip
op-kernel-dev-3d3e6f64e22c94115d47de670611bcd3ecda3796.tar.gz
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>
Diffstat (limited to 'fs/xfs/xfs_bmap.c')
-rw-r--r--fs/xfs/xfs_bmap.c60
1 files changed, 36 insertions, 24 deletions
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index a60f3d1..9ae7aba 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -2662,8 +2662,9 @@ xfs_bmap_btree_to_extents(
if ((error = xfs_btree_check_lptr(cur, cbno, 1)))
return error;
#endif
- if ((error = xfs_btree_read_bufl(mp, tp, cbno, 0, &cbp,
- XFS_BMAP_BTREE_REF)))
+ error = xfs_btree_read_bufl(mp, tp, cbno, 0, &cbp, XFS_BMAP_BTREE_REF,
+ xfs_bmbt_read_verify);
+ if (error)
return error;
cblock = XFS_BUF_TO_BLOCK(cbp);
if ((error = xfs_btree_check_block(cur, cblock, 0, cbp)))
@@ -4078,8 +4079,9 @@ xfs_bmap_read_extents(
* pointer (leftmost) at each level.
*/
while (level-- > 0) {
- if ((error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp,
- XFS_BMAP_BTREE_REF)))
+ error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp,
+ XFS_BMAP_BTREE_REF, xfs_bmbt_read_verify);
+ if (error)
return error;
block = XFS_BUF_TO_BLOCK(bp);
XFS_WANT_CORRUPTED_GOTO(
@@ -4124,7 +4126,8 @@ xfs_bmap_read_extents(
*/
nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib);
if (nextbno != NULLFSBLOCK)
- xfs_btree_reada_bufl(mp, nextbno, 1);
+ xfs_btree_reada_bufl(mp, nextbno, 1,
+ xfs_bmbt_read_verify);
/*
* Copy records into the extent records.
*/
@@ -4156,8 +4159,9 @@ xfs_bmap_read_extents(
*/
if (bno == NULLFSBLOCK)
break;
- if ((error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp,
- XFS_BMAP_BTREE_REF)))
+ error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp,
+ XFS_BMAP_BTREE_REF, xfs_bmbt_read_verify);
+ if (error)
return error;
block = XFS_BUF_TO_BLOCK(bp);
}
@@ -5868,15 +5872,16 @@ xfs_bmap_check_leaf_extents(
*/
while (level-- > 0) {
/* See if buf is in cur first */
+ bp_release = 0;
bp = xfs_bmap_get_bp(cur, XFS_FSB_TO_DADDR(mp, bno));
- if (bp) {
- bp_release = 0;
- } else {
+ if (!bp) {
bp_release = 1;
+ error = xfs_btree_read_bufl(mp, NULL, bno, 0, &bp,
+ XFS_BMAP_BTREE_REF,
+ xfs_bmbt_read_verify);
+ if (error)
+ goto error_norelse;
}
- if (!bp && (error = xfs_btree_read_bufl(mp, NULL, bno, 0, &bp,
- XFS_BMAP_BTREE_REF)))
- goto error_norelse;
block = XFS_BUF_TO_BLOCK(bp);
XFS_WANT_CORRUPTED_GOTO(
xfs_bmap_sanity_check(mp, bp, level),
@@ -5953,15 +5958,16 @@ xfs_bmap_check_leaf_extents(
if (bno == NULLFSBLOCK)
break;
+ bp_release = 0;
bp = xfs_bmap_get_bp(cur, XFS_FSB_TO_DADDR(mp, bno));
- if (bp) {
- bp_release = 0;
- } else {
+ if (!bp) {
bp_release = 1;
+ error = xfs_btree_read_bufl(mp, NULL, bno, 0, &bp,
+ XFS_BMAP_BTREE_REF,
+ xfs_bmbt_read_verify);
+ if (error)
+ goto error_norelse;
}
- if (!bp && (error = xfs_btree_read_bufl(mp, NULL, bno, 0, &bp,
- XFS_BMAP_BTREE_REF)))
- goto error_norelse;
block = XFS_BUF_TO_BLOCK(bp);
}
if (bp_release) {
@@ -6052,7 +6058,9 @@ xfs_bmap_count_tree(
struct xfs_btree_block *block, *nextblock;
int numrecs;
- if ((error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp, XFS_BMAP_BTREE_REF)))
+ error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp, XFS_BMAP_BTREE_REF,
+ xfs_bmbt_read_verify);
+ if (error)
return error;
*count += 1;
block = XFS_BUF_TO_BLOCK(bp);
@@ -6061,8 +6069,10 @@ xfs_bmap_count_tree(
/* Not at node above leaves, count this level of nodes */
nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib);
while (nextbno != NULLFSBLOCK) {
- if ((error = xfs_btree_read_bufl(mp, tp, nextbno,
- 0, &nbp, XFS_BMAP_BTREE_REF)))
+ error = xfs_btree_read_bufl(mp, tp, nextbno, 0, &nbp,
+ XFS_BMAP_BTREE_REF,
+ xfs_bmbt_read_verify);
+ if (error)
return error;
*count += 1;
nextblock = XFS_BUF_TO_BLOCK(nbp);
@@ -6091,8 +6101,10 @@ xfs_bmap_count_tree(
if (nextbno == NULLFSBLOCK)
break;
bno = nextbno;
- if ((error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp,
- XFS_BMAP_BTREE_REF)))
+ error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp,
+ XFS_BMAP_BTREE_REF,
+ xfs_bmbt_read_verify);
+ if (error)
return error;
*count += 1;
block = XFS_BUF_TO_BLOCK(bp);
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