Changelog since V1 o Use lock_page_killable consistently do_generic_file_read (jan)
A long time ago there was an attempt to merge a patch that reduced the cost of unlock_page by avoiding the page_waitqueue lookup if there were no waiters. It was rejected on the grounds of complexity but it was pointed out that the read paths call lock_page unnecessarily. This series reduces the number of calls to lock_page when multiple processes read data in at the same time. mm/filemap.c | 90 ++++++++++++++++++++++++++++++++++++++++-------------------- 1 file changed, 60 insertions(+), 30 deletions(-) -- 2.6.4
