gfs2: Fix problems regarding gfs2_qa_get and _put

This patch fixes a couple of places in which gfs2_qa_get and gfs2_qa_put are
not balanced: we now keep references around whenever a file is open for writing
(see gfs2_open_common and gfs2_release), so we need to put all references we
grab in function gfs2_create_inode.  This was broken in the successful case and
on one error path.

This also means that we don't have a reference to put in gfs2_evict_inode.

In addition, gfs2_qa_put was called for the wrong inode in gfs2_link.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>

diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 70b2d3a..5acd3ce 100644 (file)
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -622,7 +622,7 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,
                                error = finish_no_open(file, NULL);
                }
                gfs2_glock_dq_uninit(ghs);
-               return error;
+               goto fail;
        } else if (error != -ENOENT) {
                goto fail_gunlock;
        }
@@ -764,9 +764,11 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,
                error = finish_open(file, dentry, gfs2_open_common);
        }
        gfs2_glock_dq_uninit(ghs);
+       gfs2_qa_put(ip);
        gfs2_glock_dq_uninit(ghs + 1);
        clear_bit(GLF_INODE_CREATING, &io_gl->gl_flags);
        gfs2_glock_put(io_gl);
+       gfs2_qa_put(dip);
        return error;
 
 fail_gunlock3:
@@ -776,7 +778,6 @@ fail_gunlock2:
        clear_bit(GLF_INODE_CREATING, &io_gl->gl_flags);
        gfs2_glock_put(io_gl);
 fail_free_inode:
-       gfs2_qa_put(ip);
        if (ip->i_gl) {
                glock_clear_object(ip->i_gl, ip);
                gfs2_glock_put(ip->i_gl);
@@ -1005,7 +1006,7 @@ out_gunlock:
 out_child:
        gfs2_glock_dq(ghs);
 out_parent:
-       gfs2_qa_put(ip);
+       gfs2_qa_put(dip);
        gfs2_holder_uninit(ghs);
        gfs2_holder_uninit(ghs + 1);
        return error;

diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index 37fc416..956fced 100644 (file)
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -1404,7 +1404,6 @@ out:
        if (ip->i_qadata)
                gfs2_assert_warn(sdp, ip->i_qadata->qa_ref == 0);
        gfs2_rs_delete(ip, NULL);
-       gfs2_qa_put(ip);
        gfs2_ordered_del_inode(ip);
        clear_inode(inode);
        gfs2_dir_hash_inval(ip);