diff options
| author | Ben Hutchings <ben@decadent.org.uk> | 2013-04-18 09:47:02 +1000 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2013-04-23 17:17:54 +1000 |
| commit | 0c3af62db9b6cfde58d59d26fe096e95b2523617 (patch) | |
| tree | 9bb4398eeeedd6c31b8bffc3a830571c83759853 /mm | |
| parent | 41a897ab497c38c59aa6266f9b23f78fab186e31 (diff) | |
mm: try harder to allocate vmemmap blocks
Hot-adding memory on x86_64 normally requires huge page allocation. When
this is done to a VM guest, it's usually because the system is already
tight on memory, so the request tends to fail. Try to avoid this by
adding __GFP_REPEAT to the allocation flags.
Addresses http://bugs.debian.org/699913
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reported-by: Bernhard Schmidt <Bernhard.Schmidt@lrz.de>
Tested-by: Bernhard Schmidt <Bernhard.Schmidt@lrz.de>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/sparse-vmemmap.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c index 1b7e22ab9b09..22b7e18e9dea 100644 --- a/mm/sparse-vmemmap.c +++ b/mm/sparse-vmemmap.c @@ -53,10 +53,12 @@ void * __meminit vmemmap_alloc_block(unsigned long size, int node) struct page *page; if (node_state(node, N_HIGH_MEMORY)) - page = alloc_pages_node(node, - GFP_KERNEL | __GFP_ZERO, get_order(size)); + page = alloc_pages_node( + node, GFP_KERNEL | __GFP_ZERO | __GFP_REPEAT, + get_order(size)); else - page = alloc_pages(GFP_KERNEL | __GFP_ZERO, + page = alloc_pages( + GFP_KERNEL | __GFP_ZERO | __GFP_REPEAT, get_order(size)); if (page) return page_address(page); |