This patch seris started out as part of the THP patch set, but it has some nice effects along the way and it seems worth splitting it out and submitting separately. Currently find_get_entry() and find_lock_entry() return the page corresponding to the requested index, but the first thing most callers do is find the head page, which we just threw away. As part of auditing all the callers, I found some misuses of the APIs and some plain inefficiencies that I've fixed. The diffstat is unflattering, but I added more kernel-doc. Matthew Wilcox (Oracle) (8): mm: Factor find_get_swap_page out of mincore_page mm: Use find_get_swap_page in memcontrol mm: Optimise madvise WILLNEED proc: Optimise smaps for shmem entries i915: Use find_lock_page instead of find_lock_entry mm: Convert find_get_entry to return the head page mm: Return head page from find_lock_entry mm: Hoist find_subpage call further up in pagecache_get_page drivers/gpu/drm/i915/gem/i915_gem_shmem.c | 4 +-- fs/proc/task_mmu.c | 8 +---- include/linux/pagemap.h | 16 +++++++-- include/linux/swap.h | 7 ++++ mm/filemap.c | 41 +++++++++++------------ mm/madvise.c | 21 +++++++----- mm/memcontrol.c | 25 ++------------ mm/mincore.c | 28 ++-------------- mm/shmem.c | 15 +++++---- mm/swap_state.c | 31 +++++++++++++++++ 10 files changed, 98 insertions(+), 98 deletions(-) -- 2.28.0
