diff options
| author | David Stevens <stevensd@chromium.org> | 2023-01-13 05:30:11 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-02-03 09:33:13 +0300 |
| commit | 2cf1338454a8a9a0b3c1271ccb521afa2d6ae241 (patch) | |
| tree | 1fa315c5c83d181efda307004e7fae64270ac4ca /include | |
| parent | 2973d8229b78d3f148e0c45916a1e8b237dc6167 (diff) | |
| download | linux-2cf1338454a8a9a0b3c1271ccb521afa2d6ae241.tar.xz | |
mm: fix khugepaged with shmem_enabled=advise
Pass vm_flags as a parameter to shmem_is_huge, rather than reading the
flags from the vm_area_struct in question. This allows the updated flags
from hugepage_madvise to be passed to the check, which is necessary
because madvise does not update the vm_area_struct's flags until after
hugepage_madvise returns.
This fixes an issue when shmem_enabled=madvise, where MADV_HUGEPAGE on
shmem was not able to register the mm_struct with khugepaged. Prior to
cd89fb065099, the mm_struct was registered by MADV_HUGEPAGE regardless of
the value of shmem_enabled (which was only checked when scanning vmas).
Link: https://lkml.kernel.org/r/20230113023011.1784015-1-stevensd@google.com
Fixes: cd89fb065099 ("mm,thp,shmem: make khugepaged obey tmpfs mount flags")
Signed-off-by: David Stevens <stevensd@chromium.org>
Cc: David Stevens <stevensd@chromium.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@surriel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/shmem_fs.h | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h index d500ea967dc7..d09d54be4ffd 100644 --- a/include/linux/shmem_fs.h +++ b/include/linux/shmem_fs.h @@ -92,14 +92,8 @@ extern struct page *shmem_read_mapping_page_gfp(struct address_space *mapping, extern void shmem_truncate_range(struct inode *inode, loff_t start, loff_t end); int shmem_unuse(unsigned int type); -extern bool shmem_is_huge(struct vm_area_struct *vma, struct inode *inode, - pgoff_t index, bool shmem_huge_force); -static inline bool shmem_huge_enabled(struct vm_area_struct *vma, - bool shmem_huge_force) -{ - return shmem_is_huge(vma, file_inode(vma->vm_file), vma->vm_pgoff, - shmem_huge_force); -} +extern bool shmem_is_huge(struct inode *inode, pgoff_t index, bool shmem_huge_force, + struct mm_struct *mm, unsigned long vm_flags); extern unsigned long shmem_swap_usage(struct vm_area_struct *vma); extern unsigned long shmem_partial_swap_usage(struct address_space *mapping, pgoff_t start, pgoff_t end); |