The patch titled
Subject: ipc: simplify msg list search
has been added to the -mm tree. Its filename is
ipc-simplify-msg-list-search.patch
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------------------------------------------------------
From: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>
Subject: ipc: simplify msg list search
Signed-off-by: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>
Acked-by: Stanislav Kinsbursky <skinsbursky@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
ipc/msg.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
diff -puN ipc/msg.c~ipc-simplify-msg-list-search ipc/msg.c
--- a/ipc/msg.c~ipc-simplify-msg-list-search
+++ a/ipc/msg.c
@@ -837,7 +837,7 @@ long do_msgrcv(int msqid, void __user *b
for (;;) {
struct msg_receiver msr_d;
- struct list_head *tmp;
+ struct msg_msg *walk_msg;
long msg_counter = 0;
msg = ERR_PTR(-EACCES);
@@ -845,11 +845,8 @@ long do_msgrcv(int msqid, void __user *b
goto out_unlock;
msg = ERR_PTR(-EAGAIN);
- tmp = msq->q_messages.next;
- while (tmp != &msq->q_messages) {
- struct msg_msg *walk_msg;
+ list_for_each_entry(walk_msg, &msq->q_messages, m_list) {
- walk_msg = list_entry(tmp, struct msg_msg, m_list);
if (testmsg(walk_msg, msgtyp, mode) &&
!security_msg_queue_msgrcv(msq, walk_msg, current,
msgtyp, mode)) {
@@ -865,7 +862,6 @@ long do_msgrcv(int msqid, void __user *b
break;
msg_counter++;
}
- tmp = tmp->next;
}
if (!IS_ERR(msg)) {
/*
_
Patches currently in -mm which might be from peter@xxxxxxxxxxxxxxxxxx are
origin.patch
ipc-fix-potential-oops-when-src-msg-4k-w-msg_copy.patch
ipc-dont-allocate-a-copy-larger-than-max.patch
ipc-clamp-with-min.patch
ipc-separate-msg-allocation-from-userspace-copy.patch
ipc-tighten-msg-copy-loops.patch
ipc-set-efault-as-default-error-in-load_msg.patch
ipc-remove-msg-handling-from-queue-scan.patch
ipc-implement-msg_copy-as-a-new-receive-mode.patch
ipc-simplify-msg-list-search.patch
ipc-refactor-msg-list-search-into-separate-function.patch
--
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