This patch adds the __GFP_NOLRU flag. This option should be used
for GFP_USER/GFP_HIGHUSER page allocations that are not maintained
in the zone LRU lists.
Signed-off-by: KUROSAWA Takahiro <[EMAIL PROTECTED]>
---
include/linux/gfp.h | 3 ++-
mm/shmem.c | 2 +-
2 files changed, 3 insertions(+), 2 deletions(-)
diff -urNp a/include/linux/gfp.h b/include/linux/gfp.h
--- a/include/linux/gfp.h 2006-01-03 12:21:10.000000000 +0900
+++ b/include/linux/gfp.h 2006-01-26 19:14:54.000000000 +0900
@@ -47,6 +47,7 @@ struct vm_area_struct;
#define __GFP_ZERO ((__force gfp_t)0x8000u)/* Return zeroed page on
success */
#define __GFP_NOMEMALLOC ((__force gfp_t)0x10000u) /* Don't use emergency
reserves */
#define __GFP_HARDWALL ((__force gfp_t)0x20000u) /* Enforce hardwall cpuset
memory allocs */
+#define __GFP_NOLRU ((__force gfp_t)0x40000u) /* GFP_USER but will not be
in LRU lists */
#define __GFP_BITS_SHIFT 20 /* Room for 20 __GFP_FOO bits */
#define __GFP_BITS_MASK ((__force gfp_t)((1 << __GFP_BITS_SHIFT) - 1))
@@ -55,7 +56,7 @@ struct vm_area_struct;
#define GFP_LEVEL_MASK (__GFP_WAIT|__GFP_HIGH|__GFP_IO|__GFP_FS| \
__GFP_COLD|__GFP_NOWARN|__GFP_REPEAT| \
__GFP_NOFAIL|__GFP_NORETRY|__GFP_NO_GROW|__GFP_COMP| \
- __GFP_NOMEMALLOC|__GFP_HARDWALL)
+ __GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_NOLRU)
#define GFP_ATOMIC (__GFP_HIGH)
#define GFP_NOIO (__GFP_WAIT)
diff -urNp a/mm/shmem.c b/mm/shmem.c
--- a/mm/shmem.c 2006-01-03 12:21:10.000000000 +0900
+++ b/mm/shmem.c 2006-01-26 19:14:54.000000000 +0900
@@ -366,7 +366,7 @@ static swp_entry_t *shmem_swp_alloc(stru
}
spin_unlock(&info->lock);
- page = shmem_dir_alloc(mapping_gfp_mask(inode->i_mapping) |
__GFP_ZERO);
+ page = shmem_dir_alloc(mapping_gfp_mask(inode->i_mapping) |
__GFP_ZERO | __GFP_NOLRU);
if (page)
set_page_private(page, 0);
spin_lock(&info->lock);
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