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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-10-05 16:33:03 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-10-05 16:33:03 -0700
commit091a1eaa0e309b0e8dcbf3f2da12c7f3d03ed182 (patch)
tree69b676d0c91cf4dd22bb5c9e69fc4bd6ded9ab05 /include
parent5943a9bbbb98b5c957662edd2fc902cc14e65895 (diff)
parentd41aa5252394c065d1f04d1ceea885b70d00c9c6 (diff)
Merge branch 'akpm'
* akpm: mm: madvise(MADV_DODUMP): allow hugetlbfs pages ocfs2: fix locking for res->tracking and dlm->tracking_list mm/vmscan.c: fix int overflow in callers of do_shrink_slab() mm/vmstat.c: skip NR_TLB_REMOTE_FLUSH* properly mm/vmstat.c: fix outdated vmstat_text proc: restrict kernel stack dumps to root mm/hugetlb: add mmap() encodings for 32MB and 512MB page sizes mm/migrate.c: split only transparent huge pages when allocation fails ipc/shm.c: use ERR_CAST() for shm_lock() error return mm/gup_benchmark: fix unsigned comparison to zero in __gup_benchmark_ioctl mm, thp: fix mlocking THP page with migration enabled ocfs2: fix crash in ocfs2_duplicate_clusters_by_page() hugetlb: take PMD sharing into account when flushing tlb/caches mm: migration: fix migration of huge PMD shared pages
Diffstat (limited to 'include')
-rw-r--r--include/linux/hugetlb.h14
-rw-r--r--include/linux/mm.h6
-rw-r--r--include/uapi/asm-generic/hugetlb_encode.h2
-rw-r--r--include/uapi/linux/memfd.h2
-rw-r--r--include/uapi/linux/mman.h2
-rw-r--r--include/uapi/linux/shm.h2
6 files changed, 28 insertions, 0 deletions
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 6b68e345f0ca..087fd5f48c91 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -140,6 +140,8 @@ pte_t *huge_pte_alloc(struct mm_struct *mm,
pte_t *huge_pte_offset(struct mm_struct *mm,
unsigned long addr, unsigned long sz);
int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep);
+void adjust_range_if_pmd_sharing_possible(struct vm_area_struct *vma,
+ unsigned long *start, unsigned long *end);
struct page *follow_huge_addr(struct mm_struct *mm, unsigned long address,
int write);
struct page *follow_huge_pd(struct vm_area_struct *vma,
@@ -170,6 +172,18 @@ static inline unsigned long hugetlb_total_pages(void)
return 0;
}
+static inline int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr,
+ pte_t *ptep)
+{
+ return 0;
+}
+
+static inline void adjust_range_if_pmd_sharing_possible(
+ struct vm_area_struct *vma,
+ unsigned long *start, unsigned long *end)
+{
+}
+
#define follow_hugetlb_page(m,v,p,vs,a,b,i,w,n) ({ BUG(); 0; })
#define follow_huge_addr(mm, addr, write) ERR_PTR(-EINVAL)
#define copy_hugetlb_page_range(src, dst, vma) ({ BUG(); 0; })
diff --git a/include/linux/mm.h b/include/linux/mm.h
index a61ebe8ad4ca..0416a7204be3 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2455,6 +2455,12 @@ static inline struct vm_area_struct *find_exact_vma(struct mm_struct *mm,
return vma;
}
+static inline bool range_in_vma(struct vm_area_struct *vma,
+ unsigned long start, unsigned long end)
+{
+ return (vma && vma->vm_start <= start && end <= vma->vm_end);
+}
+
#ifdef CONFIG_MMU
pgprot_t vm_get_page_prot(unsigned long vm_flags);
void vma_set_page_prot(struct vm_area_struct *vma);
diff --git a/include/uapi/asm-generic/hugetlb_encode.h b/include/uapi/asm-generic/hugetlb_encode.h
index e4732d3c2998..b0f8e87235bd 100644
--- a/include/uapi/asm-generic/hugetlb_encode.h
+++ b/include/uapi/asm-generic/hugetlb_encode.h
@@ -26,7 +26,9 @@
#define HUGETLB_FLAG_ENCODE_2MB (21 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_8MB (23 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_16MB (24 << HUGETLB_FLAG_ENCODE_SHIFT)
+#define HUGETLB_FLAG_ENCODE_32MB (25 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_256MB (28 << HUGETLB_FLAG_ENCODE_SHIFT)
+#define HUGETLB_FLAG_ENCODE_512MB (29 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_1GB (30 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_2GB (31 << HUGETLB_FLAG_ENCODE_SHIFT)
#define HUGETLB_FLAG_ENCODE_16GB (34 << HUGETLB_FLAG_ENCODE_SHIFT)
diff --git a/include/uapi/linux/memfd.h b/include/uapi/linux/memfd.h
index 015a4c0bbb47..7a8a26751c23 100644
--- a/include/uapi/linux/memfd.h
+++ b/include/uapi/linux/memfd.h
@@ -25,7 +25,9 @@
#define MFD_HUGE_2MB HUGETLB_FLAG_ENCODE_2MB
#define MFD_HUGE_8MB HUGETLB_FLAG_ENCODE_8MB
#define MFD_HUGE_16MB HUGETLB_FLAG_ENCODE_16MB
+#define MFD_HUGE_32MB HUGETLB_FLAG_ENCODE_32MB
#define MFD_HUGE_256MB HUGETLB_FLAG_ENCODE_256MB
+#define MFD_HUGE_512MB HUGETLB_FLAG_ENCODE_512MB
#define MFD_HUGE_1GB HUGETLB_FLAG_ENCODE_1GB
#define MFD_HUGE_2GB HUGETLB_FLAG_ENCODE_2GB
#define MFD_HUGE_16GB HUGETLB_FLAG_ENCODE_16GB
diff --git a/include/uapi/linux/mman.h b/include/uapi/linux/mman.h
index bfd5938fede6..d0f515d53299 100644
--- a/include/uapi/linux/mman.h
+++ b/include/uapi/linux/mman.h
@@ -28,7 +28,9 @@
#define MAP_HUGE_2MB HUGETLB_FLAG_ENCODE_2MB
#define MAP_HUGE_8MB HUGETLB_FLAG_ENCODE_8MB
#define MAP_HUGE_16MB HUGETLB_FLAG_ENCODE_16MB
+#define MAP_HUGE_32MB HUGETLB_FLAG_ENCODE_32MB
#define MAP_HUGE_256MB HUGETLB_FLAG_ENCODE_256MB
+#define MAP_HUGE_512MB HUGETLB_FLAG_ENCODE_512MB
#define MAP_HUGE_1GB HUGETLB_FLAG_ENCODE_1GB
#define MAP_HUGE_2GB HUGETLB_FLAG_ENCODE_2GB
#define MAP_HUGE_16GB HUGETLB_FLAG_ENCODE_16GB
diff --git a/include/uapi/linux/shm.h b/include/uapi/linux/shm.h
index dde1344f047c..6507ad0afc81 100644
--- a/include/uapi/linux/shm.h
+++ b/include/uapi/linux/shm.h
@@ -65,7 +65,9 @@ struct shmid_ds {
#define SHM_HUGE_2MB HUGETLB_FLAG_ENCODE_2MB
#define SHM_HUGE_8MB HUGETLB_FLAG_ENCODE_8MB
#define SHM_HUGE_16MB HUGETLB_FLAG_ENCODE_16MB
+#define SHM_HUGE_32MB HUGETLB_FLAG_ENCODE_32MB
#define SHM_HUGE_256MB HUGETLB_FLAG_ENCODE_256MB
+#define SHM_HUGE_512MB HUGETLB_FLAG_ENCODE_512MB
#define SHM_HUGE_1GB HUGETLB_FLAG_ENCODE_1GB
#define SHM_HUGE_2GB HUGETLB_FLAG_ENCODE_2GB
#define SHM_HUGE_16GB HUGETLB_FLAG_ENCODE_16GB