Today Frans Pop wrote: > > I'm starting to think that this commit may not be directly related to high > order allocation failures. The fact that I'm seeing SKB allocation > failures earlier because of this commit could be just a side effect. > It could be that instead the main impact of this commit is on encrypted > file system and/or encrypted swap (kcryptd). > > Besides mm the commit also touches dm-crypt (and nfs/write.c, but as I'm > only reading from NFS that's unlikely). I have updated a fileserver to 2.6.31 today and I see page allocation failures from several parts of the system ... mostly nfs though ... (it is a nfs server). So I guess the problem must be quite generic: Oct 19 07:10:02 johan kernel: [23565.684110] swapper: page allocation failure. order:5, mode:0x4020 [kern.warning] Oct 19 07:10:02 johan kernel: [23565.684118] Pid: 0, comm: swapper Not tainted 2.6.31-02063104-generic #02063104 [kern.warning] Oct 19 07:10:02 johan kernel: [23565.684121] Call Trace: [kern.warning] Oct 19 07:10:02 johan kernel: [23565.684124] <IRQ> [<ffffffff810da5a2>] __alloc_pages_slowpath+0x3b2/0x4c0 [kern.warning] Oct 19 08:59:16 johan kernel: [30120.685647] __ratelimit: 13 callbacks suppressed [kern.warning] Oct 19 08:59:16 johan kernel: [30120.685654] nfsd: page allocation failure. order:5, mode:0x4020 [kern.warning] Oct 19 08:59:16 johan kernel: [30120.685660] Pid: 6071, comm: nfsd Not tainted 2.6.31-02063104-generic #02063104 [kern.warning] Oct 19 08:59:16 johan kernel: [30120.685663] Call Trace: [kern.warning] Oct 19 08:59:16 johan kernel: [30120.685666] <IRQ> [<ffffffff810da5a2>] __alloc_pages_slowpath+0x3b2/0x4c0 [kern.warning] Oct 19 09:36:31 johan kernel: [32355.708345] __ratelimit: 16 callbacks suppressed [kern.warning] Oct 19 09:36:31 johan kernel: [32355.708352] nfsd: page allocation failure. order:5, mode:0x4020 [kern.warning] Oct 19 09:36:31 johan kernel: [32355.708358] Pid: 6087, comm: nfsd Not tainted 2.6.31-02063104-generic #02063104 [kern.warning] Oct 19 09:36:31 johan kernel: [32355.708361] Call Trace: [kern.warning] Oct 19 09:36:31 johan kernel: [32355.708364] <IRQ> [<ffffffff810da5a2>] __alloc_pages_slowpath+0x3b2/0x4c0 [kern.warning] Oct 19 10:52:01 johan kernel: [36885.358312] __ratelimit: 31 callbacks suppressed [kern.warning] Oct 19 10:52:01 johan kernel: [36885.358319] nfsd: page allocation failure. order:5, mode:0x4020 [kern.warning] Oct 19 10:52:01 johan kernel: [36885.358325] Pid: 6057, comm: nfsd Not tainted 2.6.31-02063104-generic #02063104 [kern.warning] Oct 19 10:52:01 johan kernel: [36885.358327] Call Trace: [kern.warning] Oct 19 10:52:01 johan kernel: [36885.358331] <IRQ> [<ffffffff810da5a2>] __alloc_pages_slowpath+0x3b2/0x4c0 [kern.warning] Oct 19 11:12:01 johan kernel: [38085.163831] events/3: page allocation failure. order:5, mode:0x4020 [kern.warning] Oct 19 11:12:01 johan kernel: [38085.163840] Pid: 18, comm: events/3 Not tainted 2.6.31-02063104-generic #02063104 [kern.warning] Oct 19 11:12:01 johan kernel: [38085.163843] Call Trace: [kern.warning] Oct 19 11:12:01 johan kernel: [38085.163846] <IRQ> [<ffffffff810da5a2>] __alloc_pages_slowpath+0x3b2/0x4c0 [kern.warning] -- Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland http://it.oetiker.ch tobi@xxxxxxxxxx ++41 62 775 9902 / sb: -9900 -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
