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authorNishanth Aravamudan <nacc@us.ibm.com>2007-12-17 16:20:22 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-12-17 19:28:17 -0800
commit368d2c6358c3c62b3820a8a73f9fe9c8b540cdea (patch)
tree43c9c0958897de5ecedf26c3ba8433dd252d24f7
parentd1c3fb1f8f29c41b0d098d7cfb3c32939043631f (diff)
Revert "hugetlb: Add hugetlb_dynamic_pool sysctl"
This reverts commit 54f9f80d6543fb7b157d3b11e2e7911dc1379790 ("hugetlb: Add hugetlb_dynamic_pool sysctl") Given the new sysctl nr_overcommit_hugepages, the boolean dynamic pool sysctl is not needed, as its semantics can be expressed by 0 in the overcommit sysctl (no dynamic pool) and non-0 in the overcommit sysctl (pool enabled). (Needed in 2.6.24 since it reverts a post-2.6.23 userspace-visible change) Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Acked-by: Adam Litke <agl@us.ibm.com> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: Dave Hansen <haveblue@us.ibm.com> Cc: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--include/linux/hugetlb.h1
-rw-r--r--kernel/sysctl.c8
-rw-r--r--mm/hugetlb.c5
3 files changed, 0 insertions, 14 deletions
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index f7bc869a29b..30d606afcaf 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -33,7 +33,6 @@ void hugetlb_unreserve_pages(struct inode *inode, long offset, long freed);
extern unsigned long max_huge_pages;
extern unsigned long hugepages_treat_as_movable;
-extern int hugetlb_dynamic_pool;
extern unsigned long nr_overcommit_huge_pages;
extern const unsigned long hugetlb_zero, hugetlb_infinity;
extern int sysctl_hugetlb_shm_group;
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index b85a1282605..1135de73087 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -906,14 +906,6 @@ static struct ctl_table vm_table[] = {
},
{
.ctl_name = CTL_UNNUMBERED,
- .procname = "hugetlb_dynamic_pool",
- .data = &hugetlb_dynamic_pool,
- .maxlen = sizeof(hugetlb_dynamic_pool),
- .mode = 0644,
- .proc_handler = &proc_dointvec,
- },
- {
- .ctl_name = CTL_UNNUMBERED,
.procname = "nr_overcommit_hugepages",
.data = &nr_overcommit_huge_pages,
.maxlen = sizeof(nr_overcommit_huge_pages),
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 3a790651475..7224a4f0710 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -31,7 +31,6 @@ static unsigned int free_huge_pages_node[MAX_NUMNODES];
static unsigned int surplus_huge_pages_node[MAX_NUMNODES];
static gfp_t htlb_alloc_mask = GFP_HIGHUSER;
unsigned long hugepages_treat_as_movable;
-int hugetlb_dynamic_pool;
unsigned long nr_overcommit_huge_pages;
static int hugetlb_next_nid;
@@ -230,10 +229,6 @@ static struct page *alloc_buddy_huge_page(struct vm_area_struct *vma,
struct page *page;
unsigned int nid;
- /* Check if the dynamic pool is enabled */
- if (!hugetlb_dynamic_pool)
- return NULL;
-
/*
* Assume we will successfully allocate the surplus page to
* prevent racing processes from causing the surplus to exceed