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authorMikulas Patocka <mpatocka@redhat.com>2013-07-10 23:41:16 +0100
committerAlasdair G Kergon <agk@redhat.com>2013-07-10 23:41:16 +0100
commit220cd058d9b66b940105e0a32324f06d557deba7 (patch)
treeaa6a9ca04528df50e3af0782458ac3bf4648f6a4 /drivers/md
parentb1bf2de07271932326af847a3c6a01fdfd29d4be (diff)
dm: use __GFP_HIGHMEM in __vmalloc
Use __GFP_HIGHMEM in __vmalloc. Pages allocated with __vmalloc can be allocated in high memory that is not directly mapped to kernel space, so use __GFP_HIGHMEM just like vmalloc does. This patch reduces memory pressure slightly because pages can be allocated in the high zone. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/dm-bufio.c2
-rw-r--r--drivers/md/dm-ioctl.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c
index 0387e05cdb9..9588b864d31 100644
--- a/drivers/md/dm-bufio.c
+++ b/drivers/md/dm-bufio.c
@@ -349,7 +349,7 @@ static void *alloc_buffer_data(struct dm_bufio_client *c, gfp_t gfp_mask,
if (gfp_mask & __GFP_NORETRY)
noio_flag = memalloc_noio_save();
- ptr = __vmalloc(c->block_size, gfp_mask, PAGE_KERNEL);
+ ptr = __vmalloc(c->block_size, gfp_mask | __GFP_HIGHMEM, PAGE_KERNEL);
if (gfp_mask & __GFP_NORETRY)
memalloc_noio_restore(noio_flag);
diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
index 81a79b739e9..12f04868e89 100644
--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -1646,7 +1646,7 @@ static int copy_params(struct dm_ioctl __user *user, struct dm_ioctl *param_kern
if (!dmi) {
unsigned noio_flag;
noio_flag = memalloc_noio_save();
- dmi = __vmalloc(param_kernel->data_size, GFP_NOIO | __GFP_REPEAT | __GFP_HIGH, PAGE_KERNEL);
+ dmi = __vmalloc(param_kernel->data_size, GFP_NOIO | __GFP_REPEAT | __GFP_HIGH | __GFP_HIGHMEM, PAGE_KERNEL);
memalloc_noio_restore(noio_flag);
if (dmi)
*param_flags |= DM_PARAMS_VMALLOC;