diff options
| author | Oscar Salvador <osalvador@suse.de> | 2024-10-07 09:50:34 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-11-06 20:11:10 -0800 |
| commit | 7bd3f1e1a9ae7f7508c88dd056755a0a4741ae88 (patch) | |
| tree | 8b43666ce195f8a4d6836d726b0a84889e61a8dd /include | |
| parent | 5959ffabbb67dfdd0cd4623e675a24005de66393 (diff) | |
mm: make hugetlb mappings go through mm_get_unmapped_area_vmflags
Hugetlb mappings will no longer be special cased but rather go through the
generic mm_get_unmapped_area_vmflags function. For that to happen, let us
remove the .get_unmapped_area from hugetlbfs_file_operations struct, and
hint __get_unmapped_area that it should not send hugetlb mappings through
thp_get_unmapped_area_vmflags but through mm_get_unmapped_area_vmflags.
Create also a function called hugetlb_mmap_check_and_align() where a
couple of safety checks are being done and the addr is aligned to the huge
page size. Otherwise we will have to do this in every single function,
which duplicates quite a lot of code.
Link: https://lkml.kernel.org/r/20241007075037.267650-7-osalvador@suse.de
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Cc: David Hildenbrand <david@redhat.com>
Cc: Donet Tom <donettom@linux.ibm.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Peter Xu <peterx@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/hugetlb.h | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 368d552e4860..3a81b6126f62 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -546,11 +546,10 @@ static inline struct hstate *hstate_inode(struct inode *i) } #endif /* !CONFIG_HUGETLBFS */ -#ifdef HAVE_ARCH_HUGETLB_UNMAPPED_AREA -unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, - unsigned long len, unsigned long pgoff, - unsigned long flags); -#endif /* HAVE_ARCH_HUGETLB_UNMAPPED_AREA */ +unsigned long +__generic_hugetlb_get_unmapped_area(struct file *file, unsigned long addr, + unsigned long len, unsigned long pgoff, + unsigned long flags); unsigned long generic_hugetlb_get_unmapped_area(struct file *file, unsigned long addr, |