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authorDave Chinner <dchinner@redhat.com>2012-11-12 22:54:03 +1100
committerBen Myers <bpm@sgi.com>2012-11-15 21:34:07 -0600
commit98021821a502db347bd9c7671beeee6e8ce07ea6 (patch)
tree1cfb76746a51e6713ff4ba2842ed55c90c4b063b /fs/xfs/xfs_fsops.c
parenteab4e63368b4cfa597dbdac66d1a7a836a693b7d (diff)
xfs: verify superblocks as they are read from disk
Add a superblock verify callback function and pass it into the buffer read functions. Remove the now redundant verification code that is currently in use. Adding verification shows that secondary superblocks never have their "sb_inprogress" flag cleared by mkfs.xfs, so when validating the secondary superblocks during a grow operation we have to avoid checking this field. Even if we fix mkfs, we will still have to ignore this field for verification purposes unless a version of mkfs that does not have this bug was used. 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_fsops.c')
-rw-r--r--fs/xfs/xfs_fsops.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index f35f8d7731f..cb65b067ed3 100644
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -444,7 +444,8 @@ xfs_growfs_data_private(
if (agno < oagcount) {
error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp,
XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)),
- XFS_FSS_TO_BB(mp, 1), 0, &bp, NULL);
+ XFS_FSS_TO_BB(mp, 1), 0, &bp,
+ xfs_sb_read_verify);
} else {
bp = xfs_trans_get_buf(NULL, mp->m_ddev_targp,
XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)),
@@ -462,6 +463,7 @@ xfs_growfs_data_private(
break;
}
xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb, XFS_SB_ALL_BITS);
+
/*
* If we get an error writing out the alternate superblocks,
* just issue a warning and continue. The real work is