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authorLachlan McIlroy <lachlan@sgi.com>2007-02-10 18:36:29 +1100
committerTim Shimmin <tes@sgi.com>2007-02-10 18:36:29 +1100
commit5478eead8528f6cb5ebe3015fb88b68b175e1093 (patch)
tree13a5a0f48f25ef5fd77fe6b1ca8e062be94fc8f4 /fs/xfs/xfs_mount.c
parentc97be736051dacefb00643095d76fd5b70dfef7b (diff)
[XFS] Re-initialize the per-cpu superblock counters after recovery.
After filesystem recovery the superblock is re-read to bring in any changes. If the per-cpu superblock counters are not re-initialized from the superblock then the next time the per-cpu counters are disabled they might overwrite the global counter with a bogus value. SGI-PV: 957348 SGI-Modid: xfs-linux-melb:xfs-kern:27999a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_mount.c')
-rw-r--r--fs/xfs/xfs_mount.c23
1 files changed, 18 insertions, 5 deletions
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index 30a5781a46d4..3bed0cf0d8af 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -543,11 +543,8 @@ xfs_readsb(xfs_mount_t *mp, int flags)
ASSERT(XFS_BUF_VALUSEMA(bp) <= 0);
}
- xfs_icsb_lock(mp);
- xfs_icsb_balance_counter(mp, XFS_SBS_ICOUNT, 0, 0);
- xfs_icsb_balance_counter(mp, XFS_SBS_IFREE, 0, 0);
- xfs_icsb_balance_counter(mp, XFS_SBS_FDBLOCKS, 0, 0);
- xfs_icsb_unlock(mp);
+ /* Initialize per-cpu counters */
+ xfs_icsb_reinit_counters(mp);
mp->m_sb_bp = bp;
xfs_buf_relse(bp);
@@ -1811,6 +1808,22 @@ xfs_icsb_init_counters(
return 0;
}
+void
+xfs_icsb_reinit_counters(
+ xfs_mount_t *mp)
+{
+ xfs_icsb_lock(mp);
+ /*
+ * start with all counters disabled so that the
+ * initial balance kicks us off correctly
+ */
+ mp->m_icsb_counters = -1;
+ xfs_icsb_balance_counter(mp, XFS_SBS_ICOUNT, 0, 0);
+ xfs_icsb_balance_counter(mp, XFS_SBS_IFREE, 0, 0);
+ xfs_icsb_balance_counter(mp, XFS_SBS_FDBLOCKS, 0, 0);
+ xfs_icsb_unlock(mp);
+}
+
STATIC void
xfs_icsb_destroy_counters(
xfs_mount_t *mp)