Commit d4031259 authored Jul 24, 2019 by Andreas Gruenbacher

gfs2: Minor gfs2_alloc_inode cleanup

In gfs2_alloc_inode, when kmem_cache_alloc cannot allocate a new object, return
NULL immediately. The code currently relies on the fact that i_inode is the
first member in struct gfs2_inode and so ip and &ip->i_inode evaluate to the
same address, but that isn't immediately obvious.

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

parent 2257e468

fs/gfs2/super.c

+7 −7

Original line number	Diff line number	Diff line
		@@ -1722,13 +1722,13 @@ static struct inode gfs2_alloc_inode(struct super_block sb)
		struct gfs2_inode *ip;

		ip = kmem_cache_alloc(gfs2_inode_cachep, GFP_KERNEL);
		if (ip) {
		if (!ip)
		return NULL;
		ip->i_flags = 0;
		ip->i_gl = NULL;
		memset(&ip->i_res, 0, sizeof(ip->i_res));
		RB_CLEAR_NODE(&ip->i_res.rs_node);
		ip->i_rahead = 0;
		}
		return &ip->i_inode;
		}