[GFS2] Use vmalloc() in dir code

When allocating memory to sort directory entries, use vmalloc()
rather than kmalloc() since for larger directories, the required
size can easily be graeter than the 128k maximum of kmalloc().

Also adding the first steps towards getting the AOP_TRUNCATED_PAGE
return code get in the glock code by flagging all places where we
request a glock and we are holding a page lock.

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

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 6a1b42cf4df4..4ed13787b7ec 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -461,6 +461,9 @@ static void handle_recurse(struct gfs2_holder *gh)
         struct gfs2_holder *tmp_gh, *safe;
         int found = 0;
 
+        printk(KERN_INFO "recursion %016llx, %u\n", gl->gl_name.ln_number,
+                gl->gl_name.ln_type);
+
         if (gfs2_assert_warn(sdp, gh->gh_owner))
                 return;