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GFS2: Release iopen glock in gfs2_create_inode error cases 

Some error cases in gfs2_create_inode were not unlocking the iopen
glock, getting the reference count off. This adds the proper unlock.
The error logic in function gfs2_create_inode was also convoluted,
so this patch simplifies it. It also takes care of a bug in
which gfs2_qa_delete() was not called in an error case.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
This commit is contained in:
Bob Peterson 2015-12-04 10:19:14 -06:00
parent ee530beafe
commit 783013c0f5
1 changed files with 7 additions and 9 deletions
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16
fs/gfs2/inode.c
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@ -594,7 +594,7 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,
struct gfs2_inode *dip = GFS2_I(dir), *ip;
struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
struct gfs2_glock *io_gl;
int error, free_vfs_inode = 0;
int error, free_vfs_inode = 1;
u32 aflags = 0;
unsigned blocks = 1;
struct gfs2_diradd da = { .bh = NULL, .save_loc = 1, };
@ -651,7 +651,7 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,
error = posix_acl_create(dir, &mode, &default_acl, &acl);
if (error)
goto fail_free_vfs_inode;
goto fail_gunlock;
ip = GFS2_I(inode);
error = gfs2_rsqa_alloc(ip);
@ -739,6 +739,9 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,
gfs2_set_iop(inode);
insert_inode_hash(inode);
free_vfs_inode = 0; /* After this point, the inode is no longer
considered free. Any failures need to undo
the gfs2 structures. */
if (default_acl) {
error = gfs2_set_acl(inode, default_acl, ACL_TYPE_DEFAULT);
posix_acl_release(default_acl);
@ -772,11 +775,8 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,
return error;
fail_gunlock3:
gfs2_glock_dq_uninit(ghs + 1);
if (ip->i_gl)
gfs2_glock_put(ip->i_gl);
goto fail_gunlock;
gfs2_glock_dq_uninit(&ip->i_iopen_gh);
gfs2_glock_put(io_gl);
fail_gunlock2:
gfs2_glock_dq_uninit(ghs + 1);
fail_free_inode:
@ -788,8 +788,6 @@ fail_free_acls:
posix_acl_release(default_acl);
if (acl)
posix_acl_release(acl);
fail_free_vfs_inode:
free_vfs_inode = 1;
fail_gunlock:
gfs2_dir_no_add(&da);
gfs2_glock_dq_uninit(ghs);