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authorLinus Torvalds <torvalds@linux-foundation.org>2011-06-27 09:01:29 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-06-27 09:01:29 -0700
commit4699d4423c07a1db35ea9453eac3a07e818338f9 (patch)
treea16641f1a1ef5d4a03122d58a1a4ff6514d21b4f
parent375ac3e09640fb16b6e6f1a1f1ee8aec30183fdf (diff)
parent4a33821236f2ef3af0081e8a5eec1301cbed3125 (diff)
downloadlinux-stericsson-4699d4423c07a1db35ea9453eac3a07e818338f9.tar.gz
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
* 'for-linus' of git://oss.sgi.com/xfs/xfs: xfs: prevent bogus assert when trying to remove non-existent attribute xfs: clear XFS_IDIRTY_RELEASE on truncate down xfs: reset inode per-lifetime state when recycling it
-rw-r--r--fs/xfs/xfs_attr.c7
-rw-r--r--fs/xfs/xfs_iget.c13
-rw-r--r--fs/xfs/xfs_inode.h10
-rw-r--r--fs/xfs/xfs_vnodeops.c7
4 files changed, 31 insertions, 6 deletions
diff --git a/fs/xfs/xfs_attr.c b/fs/xfs/xfs_attr.c
index c86375378810..01d2072fb6d4 100644
--- a/fs/xfs/xfs_attr.c
+++ b/fs/xfs/xfs_attr.c
@@ -490,6 +490,13 @@ xfs_attr_remove_int(xfs_inode_t *dp, struct xfs_name *name, int flags)
args.whichfork = XFS_ATTR_FORK;
/*
+ * we have no control over the attribute names that userspace passes us
+ * to remove, so we have to allow the name lookup prior to attribute
+ * removal to fail.
+ */
+ args.op_flags = XFS_DA_OP_OKNOENT;
+
+ /*
* Attach the dquots to the inode.
*/
error = xfs_qm_dqattach(dp, 0);
diff --git a/fs/xfs/xfs_iget.c b/fs/xfs/xfs_iget.c
index cb9b6d1469f7..3631783b2b53 100644
--- a/fs/xfs/xfs_iget.c
+++ b/fs/xfs/xfs_iget.c
@@ -253,16 +253,21 @@ xfs_iget_cache_hit(
rcu_read_lock();
spin_lock(&ip->i_flags_lock);
- ip->i_flags &= ~XFS_INEW;
- ip->i_flags |= XFS_IRECLAIMABLE;
- __xfs_inode_set_reclaim_tag(pag, ip);
+ ip->i_flags &= ~(XFS_INEW | XFS_IRECLAIM);
+ ASSERT(ip->i_flags & XFS_IRECLAIMABLE);
trace_xfs_iget_reclaim_fail(ip);
goto out_error;
}
spin_lock(&pag->pag_ici_lock);
spin_lock(&ip->i_flags_lock);
- ip->i_flags &= ~(XFS_IRECLAIMABLE | XFS_IRECLAIM);
+
+ /*
+ * Clear the per-lifetime state in the inode as we are now
+ * effectively a new inode and need to return to the initial
+ * state before reuse occurs.
+ */
+ ip->i_flags &= ~XFS_IRECLAIM_RESET_FLAGS;
ip->i_flags |= XFS_INEW;
__xfs_inode_clear_reclaim_tag(mp, pag, ip);
inode->i_state = I_NEW;
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index 3ae6d58e5473..964cfea77686 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -384,6 +384,16 @@ static inline void xfs_ifunlock(xfs_inode_t *ip)
#define XFS_IDIRTY_RELEASE 0x0040 /* dirty release already seen */
/*
+ * Per-lifetime flags need to be reset when re-using a reclaimable inode during
+ * inode lookup. Thi prevents unintended behaviour on the new inode from
+ * ocurring.
+ */
+#define XFS_IRECLAIM_RESET_FLAGS \
+ (XFS_IRECLAIMABLE | XFS_IRECLAIM | \
+ XFS_IDIRTY_RELEASE | XFS_ITRUNCATED | \
+ XFS_IFILESTREAM);
+
+/*
* Flags for inode locking.
* Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield)
* 1<<16 - 1<<32-1 -- lockdep annotation (integers)
diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index b7a5fe7c52c8..619720705bc6 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -960,8 +960,11 @@ xfs_release(
* be exposed to that problem.
*/
truncated = xfs_iflags_test_and_clear(ip, XFS_ITRUNCATED);
- if (truncated && VN_DIRTY(VFS_I(ip)) && ip->i_delayed_blks > 0)
- xfs_flush_pages(ip, 0, -1, XBF_ASYNC, FI_NONE);
+ if (truncated) {
+ xfs_iflags_clear(ip, XFS_IDIRTY_RELEASE);
+ if (VN_DIRTY(VFS_I(ip)) && ip->i_delayed_blks > 0)
+ xfs_flush_pages(ip, 0, -1, XBF_ASYNC, FI_NONE);
+ }
}
if (ip->i_d.di_nlink == 0)