The patch titled
Subject: mm: catch memory commitment underflow
has been removed from the -mm tree. Its filename was
mm-catch-memory-commitment-underflow.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Konstantin Khlebnikov <koct9i@xxxxxxxxx>
Subject: mm: catch memory commitment underflow
Print a warning (if CONFIG_DEBUG_VM=y) when memory commitment becomes too
negative.
This shouldn't happen any more - the previous two patches fixed the
committed_as underflow issues.
[akpm@xxxxxxxxxxxxxxxxxxxx: use VM_WARN_ONCE, per Dave]
Signed-off-by: Konstantin Khlebnikov <koct9i@xxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mmap.c | 5 +++++
1 file changed, 5 insertions(+)
diff -puN mm/mmap.c~mm-catch-memory-commitment-underflow mm/mmap.c
--- a/mm/mmap.c~mm-catch-memory-commitment-underflow
+++ a/mm/mmap.c
@@ -31,6 +31,7 @@
#include <linux/mempolicy.h>
#include <linux/rmap.h>
#include <linux/mmu_notifier.h>
+#include <linux/mmdebug.h>
#include <linux/perf_event.h>
#include <linux/audit.h>
#include <linux/khugepaged.h>
@@ -134,6 +135,10 @@ int __vm_enough_memory(struct mm_struct
{
unsigned long free, allowed, reserve;
+ VM_WARN_ONCE(percpu_counter_read(&vm_committed_as) <
+ -(s64)vm_committed_as_batch * num_online_cpus(),
+ "memory commitment underflow");
+
vm_acct_memory(pages);
/*
_
Patches currently in -mm which might be from koct9i@xxxxxxxxx are
origin.patch
lib-idr-fix-out-of-bounds-pointer-dereference.patch
scripts-checkstackpl-automatically-handle-32-bit-and-64-bit-mode-for-arch=x86.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
