+ eventfd-dont-take-the-spinlock-in-eventfd_poll-fix-2.patch added to -mm tree

+ eventfd-dont-take-the-spinlock-in-eventfd_poll-fix-2.patch added to -mm tree

[akpm]

The patch titled
     Subject: eventfd: type bug in eventfd_poll()
has been added to the -mm tree.  Its filename is
     eventfd-dont-take-the-spinlock-in-eventfd_poll-fix-2.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/eventfd-dont-take-the-spinlock-in-eventfd_poll-fix-2.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/eventfd-dont-take-the-spinlock-in-eventfd_poll-fix-2.patch

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The -mm tree is included into linux-next and is updated
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------------------------------------------------------
From: Dan Carpenter <dan.carpenter@oracle.com>
Subject: eventfd: type bug in eventfd_poll()

Since "count" is an unsigned int, then these conditions are never true:

        if (count == ULLONG_MAX)
                events |= POLLERR;
        if (ULLONG_MAX - 1 > count)
                events |= POLLOUT;

It should be a u64, because that's what ctx->count is.  Also GCC
complains that "flags" is unused.

Fixes: a90de8a54127 ('eventfd: don't take the spinlock in eventfd_poll')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Chris Mason <clm@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/eventfd.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN fs/eventfd.c~eventfd-dont-take-the-spinlock-in-eventfd_poll-fix-2 fs/eventfd.c
--- a/fs/eventfd.c~eventfd-dont-take-the-spinlock-in-eventfd_poll-fix-2
+++ a/fs/eventfd.c
@@ -118,7 +118,7 @@ static unsigned int eventfd_poll(struct
 {
 	struct eventfd_ctx *ctx = file->private_data;
 	unsigned int events = 0;
-	unsigned int count;
+	u64 count;
 
 	poll_wait(file, &ctx->wqh, wait);
 	smp_rmb();
_

Patches currently in -mm which might be from dan.carpenter@oracle.com are

origin.patch
ocfs2-o2net-silence-uninitialized-variable-warning.patch
mm-remove-rest-usage-of-vm_nonlinear-and-pte_file-fix.patch
mm-compaction-enhance-tracepoint-output-for-compaction-begin-end-v4-fix.patch
slab-embed-memcg_cache_params-to-kmem_cache-fix.patch
eventfd-dont-take-the-spinlock-in-eventfd_poll-fix-2.patch
linux-next.patch