I think something got wrong with this change, regarding mmap/msync on somewhat-slow? filesystem, resulting in sporadic data loss. For my case it occures during running rtorrent on cifs (ok I know it's too bad idea anyway), sometime with tons of strange log (see below), sometime just gets corrupted silently. Please see #401006 and its upstream ml, reportedly regression on linux-image-2.6.18-3 and 2.6.19. This is not cifs specific (same problem reported on local reiserfs and so on).
kernel at that time is home-built one from linux-source-2.6.18-6. Dec 3 18:26:16 x kernel: Linux version 2.6.18 (Version: m0) ([EMAIL PROTECTED]) (gcc version 4.1.2 20061115 (prerelease) (Debian 4.1.1-20)) #1 Sat Dec 2 14:22:41 JST 2006 Dec 11 09:15:16 x kernel: printk: 536 messages suppressed. Dec 11 09:15:16 x kernel: swapper: page allocation failure. order:0, mode:0x20 Dec 11 09:15:16 x kernel: [<c012b8d5>] [<c013e7b9>] [<c013ea03>] [<c0230223>] [<c01ddc39>] [<c01de97d>] [<c010c6e4>] [<c0116151>] [<c0236068>] [<c0114372>] [<c01143e6>] [<c01041d3>] [<c01041d3>] [<c0102976>] [<c0102976>] [<c0101561>] [<c01015c9>] [<c02c66d9>] [<c02c6230>] <6>Mem-info: Dec 11 09:15:16 x kernel: DMA per-cpu: Dec 11 09:15:16 x kernel: cpu 0 hot: high 0, batch 1 used:0 Dec 11 09:15:16 x kernel: cpu 0 cold: high 0, batch 1 used:0 Dec 11 09:15:16 x kernel: DMA32 per-cpu: empty Dec 11 09:15:16 x kernel: Normal per-cpu: Dec 11 09:15:16 x kernel: cpu 0 hot: high 90, batch 15 used:18 Dec 11 09:15:16 x kernel: cpu 0 cold: high 30, batch 7 used:23 Dec 11 09:15:16 x kernel: HighMem per-cpu: empty Dec 11 09:15:16 x kernel: Free pages: 1668kB (0kB HighMem) Dec 11 09:15:16 x kernel: Active:37320 inactive:24391 dirty:6568 writeback:0 unstable:0 free:417 slab:1872 mapped:11210 pagetables:86 Dec 11 09:15:16 x kernel: DMA free:1004kB min:124kB low:152kB high:184kB active:8016kB inactive:4404kB present:16384kB pages_scanned:0 all_unreclaimable? no Dec 11 09:15:16 x kernel: lowmem_reserve[]: 0 0 239 239 Dec 11 09:15:16 x kernel: DMA32 free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclaimable? no Dec 11 09:15:16 x kernel: lowmem_reserve[]: 0 0 239 239 Dec 11 09:15:16 x kernel: Normal free:664kB min:1916kB low:2392kB high:2872kB active:141264kB inactive:93160kB present:245696kB pages_scanned:192 all_unreclaimable? no Dec 11 09:15:16 x kernel: lowmem_reserve[]: 0 0 0 0 Dec 11 09:15:16 x kernel: HighMem free:0kB min:128kB low:128kB high:128kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclaimable? no Dec 11 09:15:16 x kernel: lowmem_reserve[]: 0 0 0 0 Dec 11 09:15:16 x kernel: DMA: 3*4kB 0*8kB 0*16kB 1*32kB 1*64kB 1*128kB 1*256kB 1*512kB 0*1024kB 0*2048kB 0*4096kB = 1004kB Dec 11 09:15:16 x kernel: DMA32: empty Dec 11 09:15:16 x kernel: Normal: 0*4kB 1*8kB 1*16kB 0*32kB 0*64kB 1*128kB 0*256kB 1*512kB 0*1024kB 0*2048kB 0*4096kB = 664kB Dec 11 09:15:16 x kernel: HighMem: empty Dec 11 09:15:16 x kernel: Swap cache: add 14520, delete 14520, find 218/354, race 0+0 Dec 11 09:15:16 x kernel: Free swap = 249712kB Dec 11 09:15:16 x kernel: Total swap = 249944kB Dec 11 09:15:16 x kernel: Free swap: 249712kB Dec 11 09:15:16 x kernel: 65520 pages of RAM Dec 11 09:15:16 x kernel: 0 pages of HIGHMEM Dec 11 09:15:16 x kernel: 1147 reserved pages Dec 11 09:15:16 x kernel: 14274 pages shared Dec 11 09:15:16 x kernel: 0 pages swap cached Dec 11 09:15:16 x kernel: 6568 pages dirty Dec 11 09:15:16 x kernel: 0 pages writeback Dec 11 09:15:16 x kernel: 11210 pages mapped Dec 11 09:15:16 x kernel: 1872 pages slab Dec 11 09:15:16 x kernel: 86 pages pagetables On my box swap is local dedicated partition. I can't test with official linux-image because my box won't boot due to buggy usb-legacy (my box is something crap not installable with d-i). Sorry if i should have opened new bug... -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
