The patch titled
Subject: bootmem: make ___alloc_bootmem_node_nopanic() really nopanic
has been added to the -mm tree. Its filename is
bootmem-make-___alloc_bootmem_node_nopanic-to-be-real-nopanic.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Yinghai Lu <[email protected]>
Subject: bootmem: make ___alloc_bootmem_node_nopanic() really nopanic
after
| From 99ab7b19440a72ebdf225f99b20f8ef40decee86 Mon Sep 17 00:00:00 2001
| Date: Wed, 11 Jul 2012 14:02:53 -0700
| Subject: [PATCH] mm: sparse: fix usemap allocation above node descriptor
section
Johannes said:
| while backporting the below patch, I realised that your fix busted
| f5bf18fa22f8 again. The problem was not a panicking version on
| allocation failure but when the usemap size was too large such that
| goal + size > limit triggers the BUG_ON in the bootmem allocator. So
| we need a version that passes limit ONLY if the usemap is smaller than
| the section.
after checking the code, the name of ___alloc_bootmem_node_nopanic() does
not reflect the fact.
Make bootmem really not panic.
Hope will kill bootmem sooner.
Signed-off-by: Yinghai Lu <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: <[email protected]> [3.3.x, 3.4.x]
Signed-off-by: Andrew Morton <[email protected]>
---
mm/bootmem.c | 4 ++++
1 file changed, 4 insertions(+)
diff -puN
mm/bootmem.c~bootmem-make-___alloc_bootmem_node_nopanic-to-be-real-nopanic
mm/bootmem.c
--- a/mm/bootmem.c~bootmem-make-___alloc_bootmem_node_nopanic-to-be-real-nopanic
+++ a/mm/bootmem.c
@@ -710,6 +710,10 @@ again:
if (ptr)
return ptr;
+ /* do not panic in alloc_bootmem_bdata() */
+ if (limit && goal + size > limit)
+ limit = 0;
+
ptr = alloc_bootmem_bdata(pgdat->bdata, size, align, goal, limit);
if (ptr)
return ptr;
_
Subject: Subject: bootmem: make ___alloc_bootmem_node_nopanic() really nopanic
Patches currently in -mm which might be from [email protected] are
origin.patch
linux-next.patch
bootmem-make-___alloc_bootmem_node_nopanic-to-be-real-nopanic.patch
mm-memblockc-memblock_double_array-cosmetic-cleanups.patch
mm-setup-pageblock_order-before-its-used-by-sparsemem.patch
mm-hotplug-correctly-setup-fallback-zonelists-when-creating-new-pgdat.patch
mm-hotplug-correctly-add-new-zone-to-all-other-nodes-zone-lists.patch
mm-hotplug-free-zone-pageset-when-a-zone-becomes-empty.patch
mm-hotplug-mark-memory-hotplug-code-in-page_allocc-as-__meminit.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
