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Date: Tue, 26 Feb 2013 15:55:16 -0800 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Bob Peterson <rpeterso@...hat.com>, Steven Whitehouse <swhiteho@...hat.com> Subject: [ 059/150] GFS2: Get a block reservation before resizing a file 3.8-stable review patch. If anyone has any objections, please let me know. ------------------ From: Bob Peterson <rpeterso@...hat.com> commit d2b47cfb26fe06002b8011707baac71a9ae8166f upstream. 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@...hat.com> Signed-off-by: Steven Whitehouse <swhiteho@...hat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- fs/gfs2/bmap.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -1286,6 +1286,10 @@ int gfs2_setattr_size(struct inode *inod 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); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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