diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-30 02:45:49 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-30 02:45:49 +0300 |
| commit | 139711f033f636cc78b6aaf7363252241b9698ef (patch) | |
| tree | 56cedce3b399e22eb0fee8f592ad77c823129a8b /mm/mremap.c | |
| parent | dea8dcf2a9fa8cc540136a6cd885c3beece16ec3 (diff) | |
| parent | 1f3147b49d75b47b6be54a1e6dfa87a4921e1e51 (diff) | |
| download | linux-139711f033f636cc78b6aaf7363252241b9698ef.tar.xz | |
Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
"16 patches
Subsystems affected by this patch series: mm (selftests, hugetlb,
pagecache, mremap, kasan, and slub), kbuild, checkpatch, misc, and
lib"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm: slub: call account_slab_page() after slab page initialization
zlib: move EXPORT_SYMBOL() and MODULE_LICENSE() out of dfltcc_syms.c
lib/zlib: fix inflating zlib streams on s390
lib/genalloc: fix the overflow when size is too big
kdev_t: always inline major/minor helper functions
sizes.h: add SZ_8G/SZ_16G/SZ_32G macros
local64.h: make <asm/local64.h> mandatory
kasan: fix null pointer dereference in kasan_record_aux_stack
mm: generalise COW SMC TLB flushing race comment
mm/mremap.c: fix extent calculation
mm: memmap defer init doesn't work as expected
mm: add prototype for __add_to_page_cache_locked()
checkpatch: prefer strscpy to strlcpy
Revert "kbuild: avoid static_assert for genksyms"
mm/hugetlb: fix deadlock in hugetlb_cow error path
selftests/vm: fix building protection keys test
Diffstat (limited to 'mm/mremap.c')
| -rw-r--r-- | mm/mremap.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/mm/mremap.c b/mm/mremap.c index c5590afe7165..f554320281cc 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -358,7 +358,9 @@ static unsigned long get_extent(enum pgt_entry entry, unsigned long old_addr, next = (old_addr + size) & mask; /* even if next overflowed, extent below will be ok */ - extent = (next > old_end) ? old_end - old_addr : next - old_addr; + extent = next - old_addr; + if (extent > old_end - old_addr) + extent = old_end - old_addr; next = (new_addr + size) & mask; if (extent > next - new_addr) extent = next - new_addr; |