Messages in this thread Patch in this message | | | From | Glauber Costa <> | Subject | [PATCH 3/4] restart search at beggining of vmalloc address | Date | Fri, 7 Nov 2008 20:35:53 -0200 |
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Current vmalloc restart search for a free area in case we can't find one. The reason is there are areas which are lazily freed, and could be possibly freed now. However, current implementation start searching the tree from the last failing address, which is pretty much by definition at the end of address space. So, we fail.
The proposal of this patch is to restart the search from the beginning of the requested vstart address. This fixes the regression in running KVM virtual machines for me, described in http://lkml.org/lkml/2008/10/28/349, caused by commit db64fe02258f1507e13fe5212a989922323685ce.
Signed-off-by: Glauber Costa <glommer@redhat.com> CC: Nick Piggin <npiggin@suse.de> --- mm/vmalloc.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 7db493d..6fe2003 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -378,6 +378,7 @@ found: if (!purged) { purge_vmap_area_lazy(); purged = 1; + addr = ALIGN(vstart, align); goto retry; } if (printk_ratelimit()) -- 1.5.6.5
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