+ mqueue-apply-mathematics-distributivity-on-mq_bytes-calculation.patch added to -mm tree

+ mqueue-apply-mathematics-distributivity-on-mq_bytes-calculation.patch added to -mm tree

[akpm]

The patch titled
     mqueue: apply mathematics distributivity on mq_bytes calculation
has been added to the -mm tree.  Its filename is
     mqueue-apply-mathematics-distributivity-on-mq_bytes-calculation.patch

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------------------------------------------------------
Subject: mqueue: apply mathematics distributivity on mq_bytes calculation
From: André Goddard Rosa <andre.goddard@gmail.com>

Code size reduction:
   text    data     bss     dec     hex filename
   9941      72      16   10029    272d ipc/mqueue-BEFORE.o
   9925      72      16   10013    271d ipc/mqueue-AFTER.o

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Cc: Serge E. Hallyn <serue@us.ibm.com>
Cc: Cedric Le Goater <clg@fr.ibm.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 ipc/mqueue.c |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff -puN ipc/mqueue.c~mqueue-apply-mathematics-distributivity-on-mq_bytes-calculation ipc/mqueue.c
--- a/ipc/mqueue.c~mqueue-apply-mathematics-distributivity-on-mq_bytes-calculation
+++ a/ipc/mqueue.c
@@ -261,8 +261,9 @@ static void mqueue_delete_inode(struct i
 
 	clear_inode(inode);
 
-	mq_bytes = (info->attr.mq_maxmsg * sizeof(struct msg_msg *) +
-		   (info->attr.mq_maxmsg * info->attr.mq_msgsize));
+	/* Total amount of bytes accounted for the mqueue */
+	mq_bytes = info->attr.mq_maxmsg * (sizeof(struct msg_msg *)
+	    + info->attr.mq_msgsize);
 	user = info->user;
 	if (user) {
 		spin_lock(&mq_lock);
@@ -601,8 +602,8 @@ static int mq_attr_ok(struct ipc_namespa
 	/* check for overflow */
 	if (attr->mq_msgsize > ULONG_MAX/attr->mq_maxmsg)
 		return 0;
-	if ((unsigned long)(attr->mq_maxmsg * attr->mq_msgsize) +
-	    (attr->mq_maxmsg * sizeof (struct msg_msg *)) <
+	if ((unsigned long)(attr->mq_maxmsg * (attr->mq_msgsize
+	    + sizeof (struct msg_msg *))) <
 	    (unsigned long)(attr->mq_maxmsg * attr->mq_msgsize))
 		return 0;
 	return 1;
_

Patches currently in -mm which might be from andre.goddard@gmail.com are

linux-next.patch
mqueue-fix-mq_open-file-descriptor-leak-on-user-space-processes.patch
mqueue-remove-unneeded-info-messages-initialization.patch
mqueue-apply-mathematics-distributivity-on-mq_bytes-calculation.patch
mqueue-simplify-do_open-error-handling.patch
mqueue-only-set-error-codes-if-they-are-really-necessary.patch
mqueue-fix-typo-failues-failures.patch
lib-stringc-simplify-stricmp.patch
lib-stringc-simplify-strnstr.patch

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