Commit d2b47cfb authored Feb 01, 2013 by Bob Peterson Committed by Steven Whitehouse Feb 01, 2013

GFS2: Get a block reservation before resizing a file



This patch allocates a block reservation structure before growing
or shrinking a file. Without this structure, the grow or shink code
can reference the bad pointer.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

parent 4506a519

fs/gfs2/bmap.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -1288,6 +1288,10 @@ int gfs2_setattr_size(struct inode *inode, u64 newsize)

		inode_dio_wait(inode);

		ret = gfs2_rs_alloc(GFS2_I(inode));
		if (ret)
		return ret;

		oldsize = inode->i_size;
		if (newsize >= oldsize)
		return do_grow(inode, newsize);