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authorSunil Mushran <sunil.mushran@oracle.com>2009-04-20 21:34:18 -0700
committerJoel Becker <joel.becker@oracle.com>2009-04-23 14:56:13 -0700
commita5a0a630922a2f6a774b6dac19f70cb5abd86bb0 (patch)
tree6f6106eff47a9d53971ad9fe7b408ac1ae8f12c5 /fs
parent5b09b507daaa882d888b6cd78ee89ba9caace44b (diff)
ocfs2: Add missing iput() during error handling in ocfs2_dentry_attach_lock()
In ocfs2_dentry_attach_lock(), if unable to get the dentry lock, we need to call iput(inode) because a failure here means no d_instantiate(), which means the normally matching iput() will not be called during dput(dentry). This patch fixes the oops that accompanies the following message: (3996,1):dlm_empty_lockres:2708 ERROR: lockres W00000000000000000a1046b06a4382 still has local locks! kernel BUG in dlm_empty_lockres at /rpmbuild/smushran/BUILD/ocfs2-1.4.2/fs/ocfs2/dlm/dlmmaster.c:2709! Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/ocfs2/dcache.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/fs/ocfs2/dcache.c b/fs/ocfs2/dcache.c
index 7d604480557..b574431a031 100644
--- a/fs/ocfs2/dcache.c
+++ b/fs/ocfs2/dcache.c
@@ -290,6 +290,21 @@ out_attach:
else
mlog_errno(ret);
+ /*
+ * In case of error, manually free the allocation and do the iput().
+ * We need to do this because error here means no d_instantiate(),
+ * which means iput() will not be called during dput(dentry).
+ */
+ if (ret < 0 && !alias) {
+ ocfs2_lock_res_free(&dl->dl_lockres);
+ BUG_ON(dl->dl_count != 1);
+ spin_lock(&dentry_attach_lock);
+ dentry->d_fsdata = NULL;
+ spin_unlock(&dentry_attach_lock);
+ kfree(dl);
+ iput(inode);
+ }
+
dput(alias);
return ret;