[GFS2] Fix uninitialised variable

This fixes a bug where, in certain cases an uninitialised variable
could cause a dereference of a NULL pointer in gfs2_commit_write().
Also a typo in a comment is fixed at the same time.

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

1 files changed, 1 insertions, 0 deletions

diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c
index bdf56cf66224..99c933762eb2 100644
--- a/fs/gfs2/ops_address.c
+++ b/fs/gfs2/ops_address.c
@@ -385,6 +385,7 @@ static int gfs2_prepare_write(struct file *file, struct page *page,
                 goto out_unlock;
 
 
+        ip->i_alloc.al_requested = 0;
         if (alloc_required) {
                 al = gfs2_alloc_get(ip);