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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2019-08-28 13:57:08 +1000 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2019-09-01 18:20:14 +1000 |
| commit | 4d85e3f24a4e0f3f1b1d926db370a2bbd8658768 (patch) | |
| tree | 35c1ad0933edfbbe2f592db88d8488e916df1896 /mm/slob.c | |
| parent | 5cf3805cad7fb419c3da53de9b063dd055a7b3f1 (diff) | |
| download | linux-next-4d85e3f24a4e0f3f1b1d926db370a2bbd8658768.tar.gz | |
mm: introduce page_size()
Patch series "Make working with compound pages easier", v2.
These three patches add three helpers and convert the appropriate
places to use them.
This patch (of 3):
It's unnecessarily hard to find out the size of a potentially huge page.
Replace 'PAGE_SIZE << compound_order(page)' with page_size(page).
Link: http://lkml.kernel.org/r/20190721104612.19120-2-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Diffstat (limited to 'mm/slob.c')
| -rw-r--r-- | mm/slob.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/slob.c b/mm/slob.c index 07a39047aa54..fa53e9f73893 100644 --- a/mm/slob.c +++ b/mm/slob.c @@ -571,7 +571,7 @@ size_t __ksize(const void *block) sp = virt_to_page(block); if (unlikely(!PageSlab(sp))) - return PAGE_SIZE << compound_order(sp); + return page_size(sp); align = max_t(size_t, ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN); m = (unsigned int *)(block - align); |