From mboxrd@z Thu Jan 1 00:00:00 1970 In-reply-to: (message from Miklos Szeredi on Wed, 23 Jan 2008 10:34:52 +0100) Subject: Re: [PATCH -v8 3/4] Enable the MS_ASYNC functionality in sys_msync() References: <12010440803930-git-send-email-salikhmetov@gmail.com> <1201044083504-git-send-email-salikhmetov@gmail.com> <1201078035.6341.45.camel@lappy> <1201078278.6341.47.camel@lappy> Message-Id: From: Miklos Szeredi Date: Wed, 23 Jan 2008 10:51:00 +0100 Sender: owner-linux-mm@kvack.org Return-Path: To: miklos@szeredi.hu Cc: a.p.zijlstra@chello.nl, salikhmetov@gmail.com, linux-mm@kvack.org, jakob@unthought.net, linux-kernel@vger.kernel.org, valdis.kletnieks@vt.edu, riel@redhat.com, ksm@42.dk, staubach@redhat.com, jesper.juhl@gmail.com, torvalds@linux-foundation.org, akpm@linux-foundation.org, protasnb@gmail.com, r.e.wolff@bitwizard.nl, hidave.darkstar@gmail.com, hch@infradead.org List-ID: > > Also, it still doesn't make sense to me why we'd not need to walk the > > rmap, it is all the same file after all. > > It's the same file, but not the same memory map. It basically depends > on how you define msync: > > a) sync _file_ on region defined by this mmap/start/end-address > b) sync _memory_region_ defined by start/end-address My mmap/msync tester program can acually check this as well, with the '-f' flag. Anton, can you try that on the reference platforms? Miklos -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org