On Mon, Dec 09, 2024 at 09:25:47PM +0800, Jinjie Ruan wrote: > Handle dup_userfaultfd() and anon_vma_fork() NULL check inline to > save some function call overhead. The Unixbench single core process > create has 1% improve with these patches. > > Jinjie Ruan (2): > userfaultfd: handle dup_userfaultfd() NULL check inline > mm, rmap: handle anon_vma_fork() NULL check inline > > fs/userfaultfd.c | 5 +---- > include/linux/rmap.h | 12 +++++++++++- > include/linux/userfaultfd_k.h | 11 ++++++++++- > mm/rmap.c | 6 +----- > 4 files changed, 23 insertions(+), 11 deletions(-) > > -- > 2.34.1 > Coincidentally I've just diagosed a rather nasty bug in this code [0], so could we hold off on this change for just a little bit until we can get a fix out for this please? I'd rather not complicate anything until we're sure we won't need to change this. Thanks! [0]:https://lore.kernel.org/linux-mm/aa2c1930-becc-4bc5-adfb-96e88290acc7@lucifer.local/
