summaryrefslogtreecommitdiffstats
path: root/arch
diff options
context:
space:
mode:
authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2013-12-20 13:35:58 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2013-12-20 12:25:45 -0800
commit597d795a2a786d22dd872332428e2b9439ede639 (patch)
tree1dd7be7e737649c7d346c695e0700c9732b2d681 /arch
parentfff4068cba484e6b0abe334ed6b15d5a215a3b25 (diff)
mm: do not allocate page->ptl dynamically, if spinlock_t fits to long
In struct page we have enough space to fit long-size page->ptl there, but we use dynamically-allocated page->ptl if size(spinlock_t) is larger than sizeof(int). It hurts 64-bit architectures with CONFIG_GENERIC_LOCKBREAK, where sizeof(spinlock_t) == 8, but it easily fits into struct page. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Hugh Dickins <hughd@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions