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| author | Song Liu <songliubraving@fb.com> | 2019-09-24 00:37:57 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-09-25 00:54:11 +0200 |
| commit | 579c571e2efdb8e5b50959ae66b6142e05bd704f (patch) | |
| tree | 30382516f37194607f2d729582214e355a97ddcd /mm/khugepaged.c | |
| parent | mm,thp: stats for file backed THP (diff) | |
| download | linux-579c571e2efdb8e5b50959ae66b6142e05bd704f.tar.xz linux-579c571e2efdb8e5b50959ae66b6142e05bd704f.zip | |
khugepaged: rename collapse_shmem() and khugepaged_scan_shmem()
Next patch will add khugepaged support of non-shmem files. This patch
renames these two functions to reflect the new functionality:
collapse_shmem() => collapse_file()
khugepaged_scan_shmem() => khugepaged_scan_file()
Link: http://lkml.kernel.org/r/20190801184244.3169074-6-songliubraving@fb.com
Signed-off-by: Song Liu <songliubraving@fb.com>
Acked-by: Rik van Riel <riel@surriel.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Hillf Danton <hdanton@sina.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/khugepaged.c')
| -rw-r--r-- | mm/khugepaged.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 04a54ff5a8ac..7e36cc893f25 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -1287,7 +1287,7 @@ static void retract_page_tables(struct address_space *mapping, pgoff_t pgoff) } /** - * collapse_shmem - collapse small tmpfs/shmem pages into huge one. + * collapse_file - collapse small tmpfs/shmem pages into huge one. * * Basic scheme is simple, details are more complex: * - allocate and lock a new huge page; @@ -1304,10 +1304,11 @@ static void retract_page_tables(struct address_space *mapping, pgoff_t pgoff) * + restore gaps in the page cache; * + unlock and free huge page; */ -static void collapse_shmem(struct mm_struct *mm, - struct address_space *mapping, pgoff_t start, +static void collapse_file(struct mm_struct *mm, + struct file *file, pgoff_t start, struct page **hpage, int node) { + struct address_space *mapping = file->f_mapping; gfp_t gfp; struct page *new_page; struct mem_cgroup *memcg; @@ -1563,11 +1564,11 @@ out: /* TODO: tracepoints */ } -static void khugepaged_scan_shmem(struct mm_struct *mm, - struct address_space *mapping, - pgoff_t start, struct page **hpage) +static void khugepaged_scan_file(struct mm_struct *mm, + struct file *file, pgoff_t start, struct page **hpage) { struct page *page = NULL; + struct address_space *mapping = file->f_mapping; XA_STATE(xas, &mapping->i_pages, start); int present, swap; int node = NUMA_NO_NODE; @@ -1631,16 +1632,15 @@ static void khugepaged_scan_shmem(struct mm_struct *mm, result = SCAN_EXCEED_NONE_PTE; } else { node = khugepaged_find_target_node(); - collapse_shmem(mm, mapping, start, hpage, node); + collapse_file(mm, file, start, hpage, node); } } /* TODO: tracepoints */ } #else -static void khugepaged_scan_shmem(struct mm_struct *mm, - struct address_space *mapping, - pgoff_t start, struct page **hpage) +static void khugepaged_scan_file(struct mm_struct *mm, + struct file *file, pgoff_t start, struct page **hpage) { BUILD_BUG(); } @@ -1722,8 +1722,7 @@ skip: file = get_file(vma->vm_file); up_read(&mm->mmap_sem); ret = 1; - khugepaged_scan_shmem(mm, file->f_mapping, - pgoff, hpage); + khugepaged_scan_file(mm, file, pgoff, hpage); fput(file); } else { ret = khugepaged_scan_pmd(mm, vma, |