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authorArnd Bergmann <arnd@arndb.de>2012-11-16 16:42:59 +0100
committerArnd Bergmann <arnd@arndb.de>2012-11-16 16:42:59 +0100
commit57260e4088894de25bb1837d529708c3ec705a69 (patch)
treee7072aed15b203197549099371db55c5d4bc3c0a /fs/xfs/xfs_fsops.c
parent2d4d07b97c0b774ea9ce2a2105818208d3df7241 (diff)
parent3d5e2abe6e265acc5e1fda810301243e9bac92b2 (diff)
Merge tag 'imx-fixes-rc' of git://git.pengutronix.de/git/imx/linux-2.6 into fixes
From Sascha Hauer <s.hauer@pengutronix.de>: ARM i.MX fixes for 3.7-rc * tag 'imx-fixes-rc' of git://git.pengutronix.de/git/imx/linux-2.6: ARM: imx: ehci: fix host power mask bit ARM i.MX: fix error-valued pointer dereference in clk_register_gate2() Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'fs/xfs/xfs_fsops.c')
-rw-r--r--fs/xfs/xfs_fsops.c21
1 files changed, 19 insertions, 2 deletions
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index c25b094efbf..4beaede4327 100644
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -399,9 +399,26 @@ xfs_growfs_data_private(
/* update secondary superblocks. */
for (agno = 1; agno < nagcount; agno++) {
- error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp,
+ error = 0;
+ /*
+ * new secondary superblocks need to be zeroed, not read from
+ * disk as the contents of the new area we are growing into is
+ * completely unknown.
+ */
+ 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);
+ } else {
+ bp = xfs_trans_get_buf(NULL, mp->m_ddev_targp,
+ XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)),
+ XFS_FSS_TO_BB(mp, 1), 0);
+ if (bp)
+ xfs_buf_zero(bp, 0, BBTOB(bp->b_length));
+ else
+ error = ENOMEM;
+ }
+
if (error) {
xfs_warn(mp,
"error %d reading secondary superblock for ag %d",
@@ -423,7 +440,7 @@ xfs_growfs_data_private(
break; /* no point in continuing */
}
}
- return 0;
+ return error;
error0:
xfs_trans_cancel(tp, XFS_TRANS_ABORT);