ich777/linux_media
1
0
Fork 0
mirror of https://github.com/tbsdtv/linux_media.git synced 2025-07-23 20:51:03 +02:00
Code Issues Packages Projects Releases Wiki Activity

mm/hugetlb: unify migration callbacks

Browse Source 
There is no difference between two migration callback functions,
alloc_huge_page_node() and alloc_huge_page_nodemask(), except
__GFP_THISNODE handling.  It's redundant to have two almost similar
functions in order to handle this flag.  So, this patch tries to remove
one by introducing a new argument, gfp_mask, to
alloc_huge_page_nodemask().

After introducing gfp_mask argument, it's caller's job to provide correct
gfp_mask.  So, every callsites for alloc_huge_page_nodemask() are changed
to provide gfp_mask.

Note that it's safe to remove a node id check in alloc_huge_page_node()
since there is no caller passing NUMA_NO_NODE as a node id.

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Roman Gushchin <guro@fb.com>
Link: http://lkml.kernel.org/r/1594622517-20681-4-git-send-email-iamjoonsoo.kim@lge.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joonsoo Kim
2020-08-11 18:37:17 -07:00
committed by Linus Torvalds
parent b4b382238e
commit d92bbc2719
4 changed files with 33 additions and 49 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
include/linux/hugetlb.h
View File

@@ -10,6 +10,7 @@
#include <linux/list.h>
#include <linux/kref.h>
#include <linux/pgtable.h>
#include <linux/gfp.h>
struct ctl_table;
struct user_struct;
@@ -506,9 +507,8 @@ struct huge_bootmem_page {
struct page *alloc_huge_page(struct vm_area_struct *vma,
unsigned long addr, int avoid_reserve);
struct page *alloc_huge_page_node(struct hstate *h, int nid);
struct page *alloc_huge_page_nodemask(struct hstate *h, int preferred_nid,
nodemask_t *nmask);
nodemask_t *nmask, gfp_t gfp_mask);
struct page *alloc_huge_page_vma(struct hstate *h, struct vm_area_struct *vma,
unsigned long address);
struct page *alloc_migrate_huge_page(struct hstate *h, gfp_t gfp_mask,
@@ -694,6 +694,15 @@ static inline bool hugepage_movable_supported(struct hstate *h)
return true;
}
/* Movability of hugepages depends on migration support. */
static inline gfp_t htlb_alloc_mask(struct hstate *h)
{
if (hugepage_movable_supported(h))
return GFP_HIGHUSER_MOVABLE;
else
return GFP_HIGHUSER;
}
static inline spinlock_t *huge_pte_lockptr(struct hstate *h,
struct mm_struct *mm, pte_t *pte)
{
@@ -761,13 +770,9 @@ static inline struct page *alloc_huge_page(struct vm_area_struct *vma,
return NULL;
}
static inline struct page *alloc_huge_page_node(struct hstate *h, int nid)
{
return NULL;
}
static inline struct page *
alloc_huge_page_nodemask(struct hstate *h, int preferred_nid, nodemask_t *nmask)
alloc_huge_page_nodemask(struct hstate *h, int preferred_nid,
nodemask_t *nmask, gfp_t gfp_mask)
{
return NULL;
}
@@ -880,6 +885,11 @@ static inline bool hugepage_movable_supported(struct hstate *h)
return false;
}
static inline gfp_t htlb_alloc_mask(struct hstate *h)
{
return 0;
}
static inline spinlock_t *huge_pte_lockptr(struct hstate *h,
struct mm_struct *mm, pte_t *pte)
{