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[PATCH 07/24] xfs: scrub AGF and AGFL

To: david@xxxxxxxxxxxxx, darrick.wong@xxxxxxxxxx
Subject: [PATCH 07/24] xfs: scrub AGF and AGFL
From: "Darrick J. Wong" <darrick.wong@xxxxxxxxxx>
Date: Thu, 25 Aug 2016 16:56:03 -0700
Cc: linux-xfs@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <147216931783.6398.1716678878794493264.stgit@xxxxxxxxxxxxxxxx>
References: <147216931783.6398.1716678878794493264.stgit@xxxxxxxxxxxxxxxx>
User-agent: StGit/0.17.1-dirty
Check the block references in the AGF and AGFL headers to make sure
they make sense.

Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
 libxfs/xfs_alloc.c |    2 +-
 libxfs/xfs_alloc.h |    2 ++
 libxfs/xfs_fs.h    |    4 +++-
 3 files changed, 6 insertions(+), 2 deletions(-)


diff --git a/libxfs/xfs_alloc.c b/libxfs/xfs_alloc.c
index 0f93016..055d57e 100644
--- a/libxfs/xfs_alloc.c
+++ b/libxfs/xfs_alloc.c
@@ -625,7 +625,7 @@ const struct xfs_buf_ops xfs_agfl_buf_ops = {
 /*
  * Read in the allocation group free block array.
  */
-STATIC int                             /* error */
+int                                    /* error */
 xfs_alloc_read_agfl(
        xfs_mount_t     *mp,            /* mount point structure */
        xfs_trans_t     *tp,            /* transaction pointer */
diff --git a/libxfs/xfs_alloc.h b/libxfs/xfs_alloc.h
index 0b00de0..c3ada6b 100644
--- a/libxfs/xfs_alloc.h
+++ b/libxfs/xfs_alloc.h
@@ -204,6 +204,8 @@ xfs_alloc_get_rec(
 
 int xfs_read_agf(struct xfs_mount *mp, struct xfs_trans *tp,
                        xfs_agnumber_t agno, int flags, struct xfs_buf **bpp);
+int xfs_alloc_read_agfl(struct xfs_mount *mp, struct xfs_trans *tp,
+                       xfs_agnumber_t agno, struct xfs_buf **bpp);
 int xfs_alloc_fix_freelist(struct xfs_alloc_arg *args, int flags);
 int xfs_free_extent_fix_freelist(struct xfs_trans *tp, xfs_agnumber_t agno,
                struct xfs_buf **agbp);
diff --git a/libxfs/xfs_fs.h b/libxfs/xfs_fs.h
index 64c7b43..dbdd346 100644
--- a/libxfs/xfs_fs.h
+++ b/libxfs/xfs_fs.h
@@ -560,7 +560,9 @@ struct xfs_scrub_metadata {
  * Metadata types and flags for scrub operation.
  */
 #define XFS_SCRUB_TYPE_SB      0       /* superblock */
-#define XFS_SCRUB_TYPE_MAX     0
+#define XFS_SCRUB_TYPE_AGF     1       /* AG free header */
+#define XFS_SCRUB_TYPE_AGFL    2       /* AG free list */
+#define XFS_SCRUB_TYPE_MAX     2
 
 #define XFS_SCRUB_FLAGS_ALL    0x0     /* no flags yet */
 

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