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authorDave Chinner <dchinner@redhat.com>2012-11-14 17:53:49 +1100
committerBen Myers <bpm@sgi.com>2012-11-15 21:35:09 -0600
commitb0f539de9fcc543a3ffa40bc22bf51aca6ea6183 (patch)
treefe2e14add152900a3bd480714c886f8a86a2082d /fs/xfs/xfs_dquot.c
parent612cfbfe174a89d565363fff7f3961a2dda5fb71 (diff)
xfs: connect up write verifiers to new buffers
Metadata buffers that are read from disk have write verifiers already attached to them, but newly allocated buffers do not. Add appropriate write verifiers to all new metadata buffers. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Ben Myers <bpm@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_dquot.c')
-rw-r--r--fs/xfs/xfs_dquot.c104
1 files changed, 51 insertions, 53 deletions
diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
index b38a10e6f2e..1b06aa05107 100644
--- a/fs/xfs/xfs_dquot.c
+++ b/fs/xfs/xfs_dquot.c
@@ -248,7 +248,57 @@ xfs_qm_init_dquot_blk(
xfs_trans_log_buf(tp, bp, 0, BBTOB(q->qi_dqchunklen) - 1);
}
+static void
+xfs_dquot_buf_verify(
+ struct xfs_buf *bp)
+{
+ struct xfs_mount *mp = bp->b_target->bt_mount;
+ struct xfs_dqblk *d = (struct xfs_dqblk *)bp->b_addr;
+ struct xfs_disk_dquot *ddq;
+ xfs_dqid_t id = 0;
+ int i;
+
+ /*
+ * On the first read of the buffer, verify that each dquot is valid.
+ * We don't know what the id of the dquot is supposed to be, just that
+ * they should be increasing monotonically within the buffer. If the
+ * first id is corrupt, then it will fail on the second dquot in the
+ * buffer so corruptions could point to the wrong dquot in this case.
+ */
+ for (i = 0; i < mp->m_quotainfo->qi_dqperchunk; i++) {
+ int error;
+
+ ddq = &d[i].dd_diskdq;
+
+ if (i == 0)
+ id = be32_to_cpu(ddq->d_id);
+
+ error = xfs_qm_dqcheck(mp, ddq, id + i, 0, XFS_QMOPT_DOWARN,
+ "xfs_dquot_read_verify");
+ if (error) {
+ XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, d);
+ xfs_buf_ioerror(bp, EFSCORRUPTED);
+ break;
+ }
+ }
+}
+
+static void
+xfs_dquot_buf_write_verify(
+ struct xfs_buf *bp)
+{
+ xfs_dquot_buf_verify(bp);
+}
+void
+xfs_dquot_buf_read_verify(
+ struct xfs_buf *bp)
+{
+ xfs_dquot_buf_verify(bp);
+ bp->b_pre_io = xfs_dquot_buf_write_verify;
+ bp->b_iodone = NULL;
+ xfs_buf_ioend(bp, 0);
+}
/*
* Allocate a block and fill it with dquots.
@@ -315,6 +365,7 @@ xfs_qm_dqalloc(
error = xfs_buf_geterror(bp);
if (error)
goto error1;
+ bp->b_pre_io = xfs_dquot_buf_write_verify;
/*
* Make a chunk of dquots out of this buffer and log
@@ -359,59 +410,6 @@ xfs_qm_dqalloc(
return (error);
}
-
-static void
-xfs_dquot_buf_verify(
- struct xfs_buf *bp)
-{
- struct xfs_mount *mp = bp->b_target->bt_mount;
- struct xfs_dqblk *d = (struct xfs_dqblk *)bp->b_addr;
- struct xfs_disk_dquot *ddq;
- xfs_dqid_t id = 0;
- int i;
-
- /*
- * On the first read of the buffer, verify that each dquot is valid.
- * We don't know what the id of the dquot is supposed to be, just that
- * they should be increasing monotonically within the buffer. If the
- * first id is corrupt, then it will fail on the second dquot in the
- * buffer so corruptions could point to the wrong dquot in this case.
- */
- for (i = 0; i < mp->m_quotainfo->qi_dqperchunk; i++) {
- int error;
-
- ddq = &d[i].dd_diskdq;
-
- if (i == 0)
- id = be32_to_cpu(ddq->d_id);
-
- error = xfs_qm_dqcheck(mp, ddq, id + i, 0, XFS_QMOPT_DOWARN,
- "xfs_dquot_read_verify");
- if (error) {
- XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, d);
- xfs_buf_ioerror(bp, EFSCORRUPTED);
- break;
- }
- }
-}
-
-static void
-xfs_dquot_buf_write_verify(
- struct xfs_buf *bp)
-{
- xfs_dquot_buf_verify(bp);
-}
-
-void
-xfs_dquot_buf_read_verify(
- struct xfs_buf *bp)
-{
- xfs_dquot_buf_verify(bp);
- bp->b_pre_io = xfs_dquot_buf_write_verify;
- bp->b_iodone = NULL;
- xfs_buf_ioend(bp, 0);
-}
-
STATIC int
xfs_qm_dqrepair(
struct xfs_mount *mp,