Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b811c202a0edadaac7242ab834fe7ba409978ae7
Commit: b811c202a0edadaac7242ab834fe7ba409978ae7
Parent: 3e26c149c358529b1605f8959341d34bc4b880a3
Author: Christoph Lameter <[EMAIL PROTECTED]>
AuthorDate: Tue Oct 16 23:25:51 2007 -0700
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Wed Oct 17 08:42:45 2007 -0700
SLUB: simplify IRQ off handling
Move irq handling out of new slab into __slab_alloc. That is useful for
Mathieu's cmpxchg_local patchset and also allows us to remove the crude
local_irq_off in early_kmem_cache_alloc().
Signed-off-by: Christoph Lameter <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
mm/slub.c | 18 +++++++-----------
1 files changed, 7 insertions(+), 11 deletions(-)
diff --git a/mm/slub.c b/mm/slub.c
index f426f9b..0f862fb 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1085,9 +1085,6 @@ static struct page *new_slab(struct kmem_cache *s, gfp_t
flags, int node)
BUG_ON(flags & GFP_SLAB_BUG_MASK);
- if (flags & __GFP_WAIT)
- local_irq_enable();
-
page = allocate_slab(s,
flags & (GFP_RECLAIM_MASK | GFP_CONSTRAINT_MASK), node);
if (!page)
@@ -1120,8 +1117,6 @@ static struct page *new_slab(struct kmem_cache *s, gfp_t
flags, int node)
page->freelist = start;
page->inuse = 0;
out:
- if (flags & __GFP_WAIT)
- local_irq_disable();
return page;
}
@@ -1505,7 +1500,14 @@ new_slab:
goto load_freelist;
}
+ if (gfpflags & __GFP_WAIT)
+ local_irq_enable();
+
new = new_slab(s, gfpflags, node);
+
+ if (gfpflags & __GFP_WAIT)
+ local_irq_disable();
+
if (new) {
c = get_cpu_slab(s, smp_processor_id());
if (c->page) {
@@ -2039,12 +2041,6 @@ static struct kmem_cache_node
*early_kmem_cache_node_alloc(gfp_t gfpflags,
init_kmem_cache_node(n);
atomic_long_inc(&n->nr_slabs);
add_partial(n, page);
-
- /*
- * new_slab() disables interupts. If we do not reenable interrupts here
- * then bootup would continue with interrupts disabled.
- */
- local_irq_enable();
return n;
}
-
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