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Message-ID: <r2l4aa525de1004270226r40c3dd1ctd09e716f47deca39@mail.gmail.com> Date: Tue, 27 Apr 2010 11:26:57 +0200 From: Paolo Minazzi <paolo.minazzi@...il.com> To: Jens Axboe <jens.axboe@...cle.com> Cc: Jörn Engel <joern@...fs.org>, Linus Torvalds <torvalds@...ux-foundation.org>, David Woodhouse <dwmw2@...radead.org>, linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org, Christoph Hellwig <hch@...radead.org> Subject: Re: [PATCH 2/2] [MTD] Call bdi_init() and bdi_register() To be precise, I say : - downloaded 2.6.34rc5 - apply the jens patch - the logfs code is the code in the 2.6.34rc5 (I have no applied other jorn patch) Paolo On Tue, Apr 27, 2010 at 11:16 AM, Jens Axboe <jens.axboe@...cle.com> wrote: > On Tue, Apr 27 2010, Paolo Minazzi wrote: >> I have tried this patch. >> I have enabled LOGFS, but not mounted partition with it. >> /dev/mtdblock1 is my romfs root partition and it is OK. >> >> The problem is that init cannot mount my /dev/mtdblock1 romfs root. >> >> This is the fault : >> Platform: Cirrus Logic EDB9315A Board (ARM920T) Rev A >> Copyright (C) 2000, 2001, 2002, Red Hat, Inc. >> |---------------------------------------------- >> Raw file loaded 0x00080000-0x001dce6b, assumed entry at >> 0x00080000----------------------------------------------------------- >> RedBoot> exec -s 0x00b00000 -r 0x00a00000 -c "root=/dev/mtdblock1 >> console=ttyAM console=tty1"-------------------------------- >> ENTRY=0xc0008000------------------------------------------------------------------------------------------------------------- >> LENGTH=0x00300000------------------------------------------------------------------------------------------------------------ >> BASE_ADDR=0x00080000--------------------------------------------------------------------------------------------------------- >> Using base address 0x00080000 and length >> 0x00300000-------------------------------------------------------------------------- >> Uncompressing Linux... done, booting the kernel. >> Linux version 2.6.34-rc5 (root@...kstar) (gcc version 3.4.3) #18 Tue >> Apr 27 10:55:55 CEST 2010 >> CPU: ARM920T [41129200] revision 0 (ARMv4T), cr=c0007177 >> CPU: VIVT data cache, VIVT instruction cache >> Machine: Cirrus Logic EDB9315A Evaluation Board >> Memory policy: ECC disabled, Data cache writeback >> Built 1 zonelists in Zone order, mobility grouping on. Total pages: 32512 >> Kernel command line: root=/dev/mtdblock1 console=ttyAM console=tty1 >> PID hash table entries: 512 (order: -1, 2048 bytes) >> Dentry cache hash table entries: 16384 (order: 4, 65536 bytes) >> Inode-cache hash table entries: 8192 (order: 3, 32768 bytes) >> Memory: 128MB = 128MB total >> Memory: 126928k/126928k available, 4144k reserved, 0K highmem >> Virtual kernel memory layout: >> vector : 0xffff0000 - 0xffff1000 ( 4 kB) >> fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB) >> DMA : 0xffc00000 - 0xffe00000 ( 2 MB) >> vmalloc : 0xc8800000 - 0xfe800000 ( 864 MB) >> lowmem : 0xc0000000 - 0xc8000000 ( 128 MB) >> modules : 0xbf000000 - 0xc0000000 ( 16 MB) >> .init : 0xc0008000 - 0xc0036000 ( 184 kB) >> .text : 0xc0036000 - 0xc02ab000 (2516 kB) >> .data : 0xc02ac000 - 0xc02c4e00 ( 100 kB) >> SLUB: Genslabs=11, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 >> Hierarchical RCU implementation. >> NR_IRQS:120 >> VIC @fefb0000: id 0x00041190, vendor 0x41 >> VIC @fefc0000: id 0x00041190, vendor 0x41 >> Console: colour dummy device 80x30 >> console [tty1] enabled >> Calibrating delay loop... 99.73 BogoMIPS (lpj=498688) >> Mount-cache hash table entries: 512 >> CPU: Testing write buffer coherency: ok >> NET: Registered protocol family 16 >> ep93xx clock: PLL1 running at 200 MHz, PLL2 at 48 MHz >> ep93xx clock: FCLK 200 MHz, HCLK 100 MHz, PCLK 50 MHz >> ep93xx dma_m2p: M2P DMA subsystem initialized >> bio: create slab <bio-0> at 0 >> SCSI subsystem initialized >> usbcore: registered new interface driver usbfs >> usbcore: registered new interface driver hub >> usbcore: registered new device driver usb >> NET: Registered protocol family 2 >> IP route cache hash table entries: 1024 (order: 0, 4096 bytes) >> TCP established hash table entries: 4096 (order: 3, 32768 bytes) >> TCP bind hash table entries: 4096 (order: 2, 16384 bytes) >> TCP: Hash tables configured (established 4096 bind 4096) >> TCP reno registered >> UDP hash table entries: 256 (order: 0, 4096 bytes) >> UDP-Lite hash table entries: 256 (order: 0, 4096 bytes) >> NET: Registered protocol family 1 >> JFFS2 version 2.2. (NAND) © 2001-2006 Red Hat, Inc. >> ***REGISTER LOGFS >> ***REGISTER LOGFS DONE ret=0 >> ROMFS MTD (C) 2007 Red Hat, Inc. >> msgmni has been set to 247 >> io scheduler noop registered >> io scheduler deadline registered >> io scheduler cfq registered (default) >> Console: switching to colour frame buffer device 100x37 >> graphics fb0: registered. Mode = 800x600-16 >> Serial: AMBA driver >> apb:uart1: ttyAM0 at MMIO 0x808c0000 (irq = 52) is a AMBA >> console [ttyAM0] enabled >> apb:uart2: ttyAM1 at MMIO 0x808d0000 (irq = 54) is a AMBA >> apb:uart3: ttyAM2 at MMIO 0x808e0000 (irq = 55) is a AMBA >> dev->num_resources=1 >> physmap platform flash device: 02000000 at 60000000 >> physmap-flash.0: Found 1 x16 devices at 0x0 in 16-bit bank >> physmap-flash.0: Found 1 x16 devices at 0x1000000 in 16-bit bank >> Intel/Sharp Extended Query Table at 0x0031 >> Intel/Sharp Extended Query Table at 0x0031 >> Using buffer write method >> cfi_cmdset_0001: Erase suspend on write enabled >> cmdlinepart partition parsing not available >> Searching for RedBoot partition table in physmap-flash.0 at offset 0x1fe0000 >> 6 RedBoot partitions found on MTD device physmap-flash.0 >> Creating 6 MTD partitions on "physmap-flash.0": >> 0x000000000000-0x000000040000 : "RedBoot" >> 0x000000040000-0x000000b40000 : "ramdisk" >> 0x000000b40000-0x000000e40000 : "zImage" >> 0x000000e40000-0x000001fc0000 : "jffs2" >> 0x000001fc0000-0x000001fe0000 : "RedBoot config" >> 0x000001fe0000-0x000002000000 : "FIS directory" >> PPP generic driver version 2.4.2 >> PPP Deflate Compression module registered >> PPP BSD Compression module registered >> ep93xx-eth version 0.1 loading >> eth0: ep93xx on-chip ethernet, IRQ 39, 00:00:11:22:33:36 >> ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver >> ep93xx-ohci ep93xx-ohci: EP93xx OHCI >> ep93xx-ohci ep93xx-ohci: new USB bus registered, assigned bus number 1 >> ep93xx-ohci ep93xx-ohci: irq 56, io mem 0x80020000 >> hub 1-0:1.0: USB hub found >> hub 1-0:1.0: 3 ports detected >> usbcore: registered new interface driver cdc_acm >> cdc_acm: v0.26:USB Abstract Control Model driver for USB modems and >> ISDN adapters >> Initializing USB Mass Storage driver... >> usbcore: registered new interface driver usb-storage >> USB Mass Storage support registered. >> ep93xx-rtc ep93xx-rtc: rtc core: registered ep93xx-rtc as rtc0 >> usbcore: registered new interface driver usbhid >> usbhid: USB HID core driver >> TCP cubic registered >> NET: Registered protocol family 17 >> Last power-down at UTC 08:47:16 on 27/04/2010 >> ep93xx-rtc ep93xx-rtc: setting system clock to 2010-04-27 08:47:16 UTC >> (1272358036) >> VFS: Cannot open root device "mtdblock1" or unknown-block(31,1) >> Please append a correct "root=" boot option; here are the available partitions: >> 1f00 256 mtdblock0 (driver?) >> 1f01 11264 mtdblock1 (driver?) >> 1f02 3072 mtdblock2 (driver?) >> 1f03 17920 mtdblock3 (driver?) >> 1f04 128 mtdblock4 (driver?) >> 1f05 128 mtdblock5 (driver?) >> Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(31,1) >> Backtrace: >> [<c003a3dc>] (dump_backtrace+0x0/0x12c) from [<c003a520>] (dump_stack+0x18/0x1c) >> r7:c7c11000 r6:fffffffb r5:c7c11000 r4:00000000 >> [<c003a508>] (dump_stack+0x0/0x1c) from [<c0046628>] (panic+0x3c/0xc4) >> [<c00465ec>] (panic+0x0/0xc4) from [<c0008d58>] (mount_block_root+0x110/0x2e8) >> r3:00000000 r2:20000013 r1:c7c27f58 r0:c0276b44 >> [<c0008c48>] (mount_block_root+0x0/0x2e8) from [<c0008f84>] >> (mount_root+0x54/0x6c) >> [<c0008f30>] (mount_root+0x0/0x6c) from [<c0009094>] >> (prepare_namespace+0xf8/0x194) >> r5:c001a56c r4:c001a570 >> [<c0008f9c>] (prepare_namespace+0x0/0x194) from [<c0008aa4>] >> (kernel_init+0x114/0x15c) >> r6:c0019b0c r5:c0019d5c r4:c02c4e18 >> [<c0008990>] (kernel_init+0x0/0x15c) from [<c0048e98>] (do_exit+0x0/0x628) >> r6:00000000 r5:00000000 r4:00000000 >> >> >> >> If I disable logfs, my root /dev/mtdblock1 is mounted correclty. > > So this issue looks unrelated, but a bug none the less (if just enabling > logfs breaks the mount). > > -- > Jens Axboe > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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