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Commit 830ffb56 authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFSv4.1: Fix a reference leak in pnfs_update_layout 



If we exit after the call to pnfs_find_alloc_layout(), we have to ensure
that we put the struct pnfs_layout_hdr.

Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent 1dfed273

fs/nfs/pnfs.c

+6 −3
Original line number Diff line number Diff line
@@ -1067,8 +1067,10 @@ pnfs_update_layout(struct inode *ino, 


	spin_lock(&ino->i_lock);

	lo = pnfs_find_alloc_layout(ino, ctx, gfp_flags);

	if (lo == NULL)

		goto out_unlock;

	if (lo == NULL) {

		spin_unlock(&ino->i_lock);

		goto out;

	}



	/* Do we even need to bother with this? */

	if (test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags)) {
@@ -1122,6 +1124,7 @@ pnfs_update_layout(struct inode *ino, 
		spin_unlock(&clp->cl_lock);

	}

	atomic_dec(&lo->plh_outstanding);

out_put_layout_hdr:

	pnfs_put_layout_hdr(lo);

out:

	dprintk("%s: inode %s/%llu pNFS layout segment %s for "
@@ -1135,7 +1138,7 @@ pnfs_update_layout(struct inode *ino, 
	return lseg;

out_unlock:

	spin_unlock(&ino->i_lock);

	goto out;

	goto out_put_layout_hdr;

}

EXPORT_SYMBOL_GPL(pnfs_update_layout);