Enable transparent-huge-pages through gemfs by mounting with
huge=within_size.
v2: prefer kern_mount_data
Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx>
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxx>
Cc: Kirill A. Shutemov <kirill@xxxxxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: linux-mm@xxxxxxxxx
---
drivers/gpu/drm/i915/i915_gemfs.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_gemfs.c b/drivers/gpu/drm/i915/i915_gemfs.c
index 168d0bd98f60..dc35719814f0 100644
--- a/drivers/gpu/drm/i915/i915_gemfs.c
+++ b/drivers/gpu/drm/i915/i915_gemfs.c
@@ -24,6 +24,7 @@
#include <linux/fs.h>
#include <linux/mount.h>
+#include <linux/pagemap.h>
#include "i915_drv.h"
#include "i915_gemfs.h"
@@ -32,12 +33,17 @@ int i915_gemfs_init(struct drm_i915_private *i915)
{
struct file_system_type *type;
struct vfsmount *gemfs;
+ char within_size[] = "huge=within_size";
+ char *options = NULL;
type = get_fs_type("tmpfs");
if (!type)
return -ENODEV;
- gemfs = kern_mount(type);
+ if (has_transparent_hugepage())
+ options = within_size;
+
+ gemfs = kern_mount_data(type, options);
if (IS_ERR(gemfs))
return PTR_ERR(gemfs);
--
2.13.5
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