>From inode, mark to enable thp in the page cache for tmpfs
Signed-off-by: Ning Qu <quning@xxxxxxxxx>
---
mm/Kconfig | 4 ++--
mm/shmem.c | 5 +++++
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/mm/Kconfig b/mm/Kconfig
index 562f12f..4d2f90f 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -428,8 +428,8 @@ config TRANSPARENT_HUGEPAGE_PAGECACHE
help
Enabling the option adds support hugepages for file-backed
mappings. It requires transparent hugepage support from
- filesystem side. For now, the only filesystem which supports
- hugepages is ramfs.
+ filesystem side. For now, the filesystems which support
+ hugepages are: ramfs and tmpfs.
config CROSS_MEMORY_ATTACH
bool "Cross Memory Support"
diff --git a/mm/shmem.c b/mm/shmem.c
index c42331a..391c4eb 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1655,6 +1655,11 @@ static struct inode *shmem_get_inode(struct super_block *sb, const struct inode
break;
case S_IFREG:
inode->i_mapping->a_ops = &shmem_aops;
+ /*
+ * TODO: make tmpfs pages movable
+ */
+ mapping_set_gfp_mask(inode->i_mapping,
+ GFP_TRANSHUGE);
inode->i_op = &shmem_inode_operations;
inode->i_fop = &shmem_file_operations;
mpol_shared_policy_init(&info->policy,
--
1.8.4
--
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