commit a551b98d5f6fce5897d497abd8bfb262efb33d2a Merge: d1c6d2e... 50bed2e... Author: Linus Torvalds Date: Thu Sep 11 11:50:15 2008 -0700 Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block * 'for-linus' of git://git.kernel.dk/linux-2.6-block: sg: disable interrupts inside sg_copy_buffer commit d1c6d2e547148c5aa0c0a4ff6aac82f7c6da1d8b Author: David Howells Date: Thu Sep 11 17:18:56 2008 +0100 MN10300: Change the fault handler to check in_atomic() not in_interrupt() Change the MN10300 fault handler to make it check in_atomic() rather than in_interrupt() as commit 6edaf68a87d17570790fd55f0c451a29ec1d6703 did for other architectures: Author: Peter Zijlstra Date: Wed Dec 6 20:32:18 2006 -0800 [PATCH] mm: arch do_page_fault() vs in_atomic() In light of the recent pagefault and filemap_copy_from_user work I've gone through all the arch pagefault handlers to make sure the inc_preempt_count() 'feature' works as expected. Several sections of code (including the new filemap_copy_from_user) rely on the fact that faults do not take locks under increased preempt count. Signed-off-by: David Howells Acked-by: Peter Zijlstra Signed-off-by: Linus Torvalds commit 50bed2e2862a8f3a4f7d683d0d27292e71ef18b9 Author: FUJITA Tomonori Date: Thu Sep 11 18:35:39 2008 +0200 sg: disable interrupts inside sg_copy_buffer The callers of sg_copy_buffer must disable interrupts before calling it (since it uses kmap_atomic). Some callers use it on interrupt-disabled code but some need to take the trouble to disable interrupts just for this. No wonder they forget about it and we hit a bug like: http://bugzilla.kernel.org/show_bug.cgi?id=11529 James said that it might be better to disable interrupts inside the function rather than risk the callers getting it wrong. Signed-off-by: FUJITA Tomonori Signed-off-by: Jens Axboe commit 6d242a263618ba7f0f9a41dd91b347d19e704bbe Merge: a0a4a2c... 2dc75d3... Author: Linus Torvalds Date: Thu Sep 11 08:42:55 2008 -0700 Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block * 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: disable sysfs parts of the disk command filter commit a0a4a2cb0d69446c084792a40884d911dfc3cf27 Merge: 29cd195... 534e38b... Author: Linus Torvalds Date: Thu Sep 11 08:42:14 2008 -0700 Merge branch 'kvm-updates/2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm * 'kvm-updates/2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: KVM: VMX: Always return old for clear_flush_young() when using EPT KVM: SVM: fix guest global tlb flushes with NPT KVM: SVM: fix random segfaults with NPT enabled commit 29cd195e078db0d90dd447a156039513ecdd8f16 Merge: c529b7e... 01b291b... Author: Linus Torvalds Date: Thu Sep 11 08:41:17 2008 -0700 Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6 * git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: [SCSI] fix check of PQ and PDT bits for WLUNs [SCSI] make scsi_check_sense HARDWARE_ERROR return ADD_TO_MLQUEUE on retry [SCSI] scsi_dh: make check_sense return ADD_TO_MLQUEUE [SCSI] zfcp: Remove duplicated unlikely() macros. [SCSI] zfcp: channel cannot be detached due to refcount imbalance [SCSI] zfcp: Fix reference counter for remote ports [SCSI] zfcp: Simplify ccw notify handler [SCSI] zfcp: Correctly query end flag in gpn_ft response [SCSI] zfcp: Fix request queue locking [SCSI] sd: select CRC_T10DIF only when necessary commit c529b7e2db948e240c48c54a83d0b6279275e57d Merge: e2858ce... e7b1403... Author: Linus Torvalds Date: Thu Sep 11 08:40:32 2008 -0700 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] prevent ia64 from invoking irq handlers on offline CPUs [IA64] arch/ia64/sn/pci/tioca_provider.c: introduce missing kfree [IA64] fix up bte.h [IA64] fix compile failure with non modular builds commit e2858ce3ed519500e3b9af1c16c25250ff16cd5c Merge: 9a0e4c8... 5c89468... Author: Linus Torvalds Date: Thu Sep 11 08:40:11 2008 -0700 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6: udf: add llseek method udf: Fix error paths in udf_new_inode() udf: Fix lock inversion between iprune_mutex and alloc_mutex (v2) commit 2dc75d3c3b49c64fd26b4832a7efb75546cb3fc5 Author: Jens Axboe Date: Thu Sep 11 14:20:23 2008 +0200 block: disable sysfs parts of the disk command filter We still have life time issues with the sysfs command filter kobject, so disable it for 2.6.27 release. We can revisit this and make it work properly for 2.6.28, for 2.6.27 release it's too risky. Signed-off-by: Jens Axboe commit 534e38b447df47f129a6d3ec3af6705c1e3f651e Author: Sheng Yang Date: Mon Sep 8 15:12:30 2008 +0800 KVM: VMX: Always return old for clear_flush_young() when using EPT As well as discard fake accessed bit and dirty bit of EPT. Signed-off-by: Sheng Yang Signed-off-by: Avi Kivity commit e5eab0cede4b1ffaca4ad857d840127622038e55 Author: Joerg Roedel Date: Tue Sep 9 19:11:51 2008 +0200 KVM: SVM: fix guest global tlb flushes with NPT Accesses to CR4 are intercepted even with Nested Paging enabled. But the code does not check if the guest wants to do a global TLB flush. So this flush gets lost. This patch adds the check and the flush to svm_set_cr4. Signed-off-by: Joerg Roedel Signed-off-by: Avi Kivity commit 44874f84918e37b64bec6df1587e5fe2fdf6ab62 Author: Joerg Roedel Date: Wed Aug 27 14:18:43 2008 +0200 KVM: SVM: fix random segfaults with NPT enabled This patch introduces a guest TLB flush on every NPF exit in KVM. This fixes random segfaults and #UD exceptions in the guest seen under some workloads (e.g. long running compile workloads or tbench). A kernbench run with and without that fix showed that it has a slowdown lower than 0.5% Cc: stable@kernel.org Signed-off-by: Joerg Roedel Signed-off-by: Alexander Graf Signed-off-by: Avi Kivity commit 9a0e4c8038390342f48e574b157a1971e2f07348 Merge: 9e7222c... 46dfa04... Author: Linus Torvalds Date: Wed Sep 10 14:16:53 2008 -0700 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6 * git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: add deprecated ide-scsi to feature-removal-schedule.txt ide: Fix pointer arithmetic in hpt3xx driver code (3rd try) commit 9e7222c83560186686319f2892f43fc557baed2d Author: Geert Uytterhoeven Date: Wed Sep 10 22:15:19 2008 +0200 m68k: Update defconfigs for 2.6.27-rc6 Signed-off-by: Geert Uytterhoeven Signed-off-by: Linus Torvalds commit 5368f69c8b155d6e82dfc622d817c882689e9cd9 Author: Geert Uytterhoeven Date: Wed Sep 10 22:15:18 2008 +0200 VIDEO_SH_MOBILE_CEU should depend on HAS_DMA commit 0d3244d6439c8c31d2a29efd587c7aca9042c8aa ("V4L/DVB (8342): sh_mobile_ceu_camera: Add SuperH Mobile CEU driver V3") introduced VIDEO_SH_MOBILE_CEU, which selects VIDEOBUF_DMA_CONTIG. This circumvents the dependency on HAS_DMA of VIDEOBUF_DMA_CONTIG. Add a dependency on HAS_DMA to VIDEO_SH_MOBILE_CEU to fix this. Signed-off-by: Geert Uytterhoeven Acked-by: Paul Mundt Acked-by: Magnus Damm Signed-off-by: Linus Torvalds commit 36223a399f639b13b7a454349565934e6d3e2db0 Author: Daniel J Blueman Date: Wed Sep 10 21:07:55 2008 +0100 swiotlb: fix back-off path when memory allocation fails This fixes a SWIOTLB oops With SWIOTLB being enabled and straight-forward page allocation failure [1], the swiotlb_alloc_coherent fall-back path hits an issue [2], resulting in my webcam failing to work. At the time of oops, RDI is clearly a pointer to a structure which has arrived as NULL, leading to the typo in swiotlb_map_single's callsite arguments. Correctly passing the device structure [3] addresses the issue and gets my webcam working again (the allocation failure still occuring). --- [1] skype: page allocation failure. order:3, mode:0x1 Pid: 5895, comm: skype Not tainted 2.6.27-rc6-235c-debug #1 Call Trace: [] __alloc_pages_internal+0x4a0/0x5d0 [] alloc_pages_current+0xad/0x110 [] __get_free_pages+0x1d/0x60 [] swiotlb_alloc_coherent+0x49/0x180 [] dma_alloc_coherent+0x281/0x310 [] hcd_buffer_alloc+0x50/0x90 [] usb_buffer_alloc+0x2d/0x40 [] uvc_alloc_urb_buffers+0x53/0xf0 [uvcvideo] [] uvc_init_video+0x158/0x3e0 [uvcvideo] [] uvc_video_enable+0x37/0x80 [uvcvideo] [] uvc_v4l2_do_ioctl+0x723/0x1260 [uvcvideo] [] ? trace_hardirqs_off_caller+0x21/0xc0 [] ? trace_hardirqs_off_caller+0x21/0xc0 [] video_usercopy+0x19f/0x390 [videodev] [] ? uvc_v4l2_do_ioctl+0x0/0x1260 [uvcvideo] [] ? put_lock_stats+0xe/0x30 [] uvc_v4l2_ioctl+0x4d/0x80 [uvcvideo] [] native_ioctl+0x83/0x90 [compat_ioctl32] [] v4l_compat_ioctl32+0x2be/0x1da4 [compat_ioctl32] [] ? do_page_fault+0x3d1/0xae0 [] ? trace_hardirqs_on+0xd/0x10 [] ? trace_hardirqs_on_caller+0x149/0x1b0 [] ? trace_hardirqs_on+0xd/0x10 [] compat_sys_ioctl+0x8a/0x3c0 [] ? trace_hardirqs_off_thunk+0x3a/0x3c [] sysenter_dispatch+0x7/0x2c [] ? trace_hardirqs_on_thunk+0x3a/0x3f Mem-Info: Node 0 DMA per-cpu: CPU 0: hi: 0, btch: 1 usd: 0 CPU 1: hi: 0, btch: 1 usd: 0 Node 0 DMA32 per-cpu: CPU 0: hi: 186, btch: 31 usd: 3 CPU 1: hi: 186, btch: 31 usd: 0 Node 0 Normal per-cpu: CPU 0: hi: 186, btch: 31 usd: 23 CPU 1: hi: 186, btch: 31 usd: 179 Active:78545 inactive:48683 dirty:31 writeback:0 unstable:2 free:830202 slab:17516 mapped:17473 pagetables:3496 bounce:0 Node 0 DMA free:36kB min:28kB low:32kB high:40kB active:0kB inactive:0kB present:15156kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 3207 3956 3956 Node 0 DMA32 free:3197192kB min:6512kB low:8140kB high:9768kB active:0kB inactive:0kB present:3284896kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 748 748 Node 0 Normal free:123580kB min:1516kB low:1892kB high:2272kB active:314180kB inactive:194732kB present:766464kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 1*4kB 0*8kB 0*16kB 1*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 36kB Node 0 DMA32: 4*4kB 3*8kB 2*16kB 3*32kB 4*64kB 5*128kB 3*256kB 5*512kB 4*1024kB 5*2048kB 776*4096kB = 3197224kB Node 0 Normal: 14*4kB 14*8kB 8*16kB 6*32kB 1*64kB 3*128kB 3*256kB 2*512kB 4*1024kB 1*2048kB 28*4096kB = 123560kB 64847 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 502752kB Total swap = 502752kB 1048576 pages RAM 52120 pages reserved 71967 pages shared 143004 pages non-shared --- [2] BUG: unable to handle kernel NULL pointer dereference at 00000000000002c8 IP: [] map_single+0x1c/0x280 PGD 10e54e067 PUD 10e595067 PMD 0 Oops: 0000 [1] PREEMPT SMP DEBUG_PAGEALLOC CPU 0 Modules linked in: kvm_intel kvm microcode uvcvideo compat_ioctl32 videodev v4l1_compat shpchp pci_hotplug Pid: 5895, comm: skype Not tainted 2.6.27-rc6-235c-debug #1 RIP: 0010:[] [] map_single+0x1c/0x280 RSP: 0018:ffff88010e78d988 EFLAGS: 00210296 RAX: 0000780000000000 RBX: 0000000000000000 RCX: 0000000000000002 RDX: 0000000000005000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88010e78d9e8 R08: 0000000000000000 R09: 0000000000000001 R10: ffff88010e78d698 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: 0000000000005000 R15: ffff88012f1c9968 FS: 0000000000000000(0000) GS:ffffffff80a6cdc0(0063) knlGS:00000000f6355b90 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000000002c8 CR3: 000000010e57d000 CR4: 00000000000026e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process skype (pid: 5895, threadinfo ffff88010e78c000, task ffff88012b9cc460) Stack: 0000000200000000 0000000000005000 0000000000000000 0000000000000000 00000000000017b8 0000000000000000 ffff88010e78d9c8 0000000000000000 0000000000000002 0000000000000000 0000000000005000 ffff88012f1c9968 Call Trace: [] swiotlb_map_single_attrs+0x60/0xf0 [] swiotlb_map_single+0xc/0x10 [] swiotlb_alloc_coherent+0xfe/0x180 [] dma_alloc_coherent+0x281/0x310 [] hcd_buffer_alloc+0x50/0x90 [] usb_buffer_alloc+0x2d/0x40 [] uvc_alloc_urb_buffers+0x53/0xf0 [uvcvideo] [] uvc_init_video+0x158/0x3e0 [uvcvideo] [] uvc_video_enable+0x37/0x80 [uvcvideo] [] uvc_v4l2_do_ioctl+0x723/0x1260 [uvcvideo] [] ? trace_hardirqs_off_caller+0x21/0xc0 [] ? trace_hardirqs_off_caller+0x21/0xc0 [] video_usercopy+0x19f/0x390 [videodev] [] ? uvc_v4l2_do_ioctl+0x0/0x1260 [uvcvideo] [] ? put_lock_stats+0xe/0x30 [] uvc_v4l2_ioctl+0x4d/0x80 [uvcvideo] [] native_ioctl+0x83/0x90 [compat_ioctl32] [] v4l_compat_ioctl32+0x2be/0x1da4 [compat_ioctl32] [] ? do_page_fault+0x3d1/0xae0 [] ? trace_hardirqs_on+0xd/0x10 [] ? trace_hardirqs_on_caller+0x149/0x1b0 [] ? trace_hardirqs_on+0xd/0x10 [] compat_sys_ioctl+0x8a/0x3c0 [] ? trace_hardirqs_off_thunk+0x3a/0x3c [] sysenter_dispatch+0x7/0x2c [] ? trace_hardirqs_on_thunk+0x3a/0x3f Code: 45 31 c0 48 89 e5 e8 a4 ff ff ff c9 c3 66 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 38 48 89 75 b0 48 89 55 a8 89 4d a4 <48> 8b 87 c8 02 00 00 48 85 c0 0f 84 1c 02 00 00 48 8b 58 08 48 RIP [] map_single+0x1c/0x280 RSP CR2: 00000000000002c8 ---[ end trace 5d15baeeb7025a0e ]--- --- [3] ffffffff8046c830 : map_single(): /store/kernel/linux/lib/swiotlb.c:291 ffffffff8046c830: 55 push %rbp ffffffff8046c831: 48 89 e5 mov %rsp,%rbp ffffffff8046c834: 41 57 push %r15 ffffffff8046c836: 41 56 push %r14 ffffffff8046c838: 41 55 push %r13 ffffffff8046c83a: 41 54 push %r12 ffffffff8046c83c: 53 push %rbx ffffffff8046c83d: 48 83 ec 38 sub $0x38,%rsp ffffffff8046c841: 48 89 75 b0 mov %rsi,-0x50(%rbp) ffffffff8046c845: 48 89 55 a8 mov %rdx,-0x58(%rbp) ffffffff8046c849: 89 4d a4 mov %ecx,-0x5c(%rbp) dma_get_seg_boundary(): /store/kernel/linux/include/linux/dma-mapping.h:80 ffffffff8046c84c: 48 8b 87 c8 02 00 00 mov 0x2c8(%rdi),%rax <---- --- [4] Signed-off-by: Daniel J Blueman Signed-off-by: Linus Torvalds commit 46dfa040f6c26f416a0979a7cd5a2d81f08121d5 Author: FUJITA Tomonori Date: Wed Sep 10 22:22:34 2008 +0200 add deprecated ide-scsi to feature-removal-schedule.txt Signed-off-by: FUJITA Tomonori Signed-off-by: Bartlomiej Zolnierkiewicz commit 62ff2ecf7a4e69f7271b7f7a57aaee76ffe610f2 Author: Masoud Sharbiani Date: Wed Sep 10 22:22:34 2008 +0200 ide: Fix pointer arithmetic in hpt3xx driver code (3rd try) git commit 74811f355f4f69a187fa74892dcf2a684b84ce99 causes crash at module load (or boot) time on my machine with a hpt374 controller. The reason for this is that for initializing second controller which sets (hwif->dev == host->dev[1]) to true (1), adds 1 to a void ptr, which advances it by one byte instead of advancing it by sizeof(hpt_info) bytes. Because of this, all initialization functions get corrupted data in info variable which causes a crash at boot time. This patch fixes that and makes my machine boot again. The card itself is a HPT374 raid conroller: Here is the lspci -v output: 03:06.0 RAID bus controller: HighPoint Technologies, Inc. HPT374 (rev 07) Subsystem: HighPoint Technologies, Inc. Unknown device 0001 Flags: bus master, 66MHz, medium devsel, latency 120, IRQ 28 I/O ports at 8000 [size=8] I/O ports at 7800 [size=4] I/O ports at 7400 [size=8] I/O ports at 7000 [size=4] I/O ports at 6800 [size=256] Expansion ROM at fe8e0000 [disabled] [size=128K] Capabilities: [60] Power Management version 2 03:06.1 RAID bus controller: HighPoint Technologies, Inc. HPT374 (rev 07) Subsystem: HighPoint Technologies, Inc. Unknown device 0001 Flags: bus master, 66MHz, medium devsel, latency 120, IRQ 28 I/O ports at 9800 [size=8] I/O ports at 9400 [size=4] I/O ports at 9000 [size=8] I/O ports at 8800 [size=4] I/O ports at 8400 [size=256] Capabilities: [60] Power Management version 2 Signed-off-by: Masoud Sharbiani Cc: Sergei Shtylyov Cc: Andrew Morton [bart: use dev_get_drvdata() per Sergei's suggestion] Signed-off-by: Bartlomiej Zolnierkiewicz commit e7b140365b86aaf94374214c6f4e6decbee2eb0a Author: Paul E. McKenney Date: Sun Aug 31 11:06:30 2008 -0700 [IA64] prevent ia64 from invoking irq handlers on offline CPUs Make ia64 refrain from clearing a given to-be-offlined CPU's bit in the cpu_online_mask until it has processed pending irqs. This change prevents other CPUs from being blindsided by an apparently offline CPU nevertheless changing globally visible state. Also remove the existing redundant cpu_clear(cpu, cpu_online_map). Signed-off-by: Paul E. McKenney Signed-off-by: Tony Luck commit 6bf6a1a49377c32a02939ec835553703994f3e41 Author: Julia Lawall Date: Wed Sep 10 13:57:19 2008 +0200 [IA64] arch/ia64/sn/pci/tioca_provider.c: introduce missing kfree Error handling code following a kmalloc should free the allocated data. Signed-off-by: Julia Lawall Signed-off-by: Tony Luck commit 47633cf0d60bde5581d039ac1283ef4377a6e782 Author: Robin Holt Date: Tue Sep 9 10:34:44 2008 -0500 [IA64] fix up bte.h bte.h expects a #define of L1_CACHE_MASK which is currently only in bte.c. This small patch gets bte.h to include cleanly and makes BTE_UNALIGNED_COPY not report errors. Signed-off-by: Robin Holt Signed-off-by: Tony Luck commit 4611a771fc8e5ad77d27f25268846abb425101a0 Author: James Bottomley Date: Tue Sep 9 17:56:47 2008 -0500 [IA64] fix compile failure with non modular builds Broke the non modular builds by moving an essential function into modules.c. Fix this by moving it out again and into asm/sections.h as an inline. To do this, the definitions of struct fdesc and struct got_val have been lifted out of modules.c and put in asm/elf.h where they belong. Signed-off-by: James Bottomley Signed-off-by: Tony Luck commit 0e116227a01580acf47437adba3afadf21b6bd5f Author: Tao Ma Date: Wed Sep 3 01:57:14 2008 +0800 ocfs2: Fix a bug in direct IO read. ocfs2 will become read-only if we try to read the bytes which pass the end of i_size. This can be easily reproduced by following steps: 1. mkfs a ocfs2 volume with bs=4k cs=4k and nosparse. 2. create a small file(say less than 100 bytes) and we will create the file which is allocated 1 cluster. 3. read 8196 bytes from the kernel using O_DIRECT which exceeds the limit. 4. The ocfs2 volume becomes read-only and dmesg shows: OCFS2: ERROR (device sda13): ocfs2_direct_IO_get_blocks: Inode 66010 has a hole at block 1 File system is now read-only due to the potential of on-disk corruption. Please run fsck.ocfs2 once the file system is unmounted. So suppress the ERROR message. Signed-off-by: Tao Ma Signed-off-by: Mark Fasheh commit 5c89468c12899b84886cb47eec93f0c88e0f896a Author: Christoph Hellwig Date: Mon Sep 8 19:44:17 2008 +0200 udf: add llseek method UDF currently doesn't set a llseek method for regular files, which means it will fall back to default_llseek. This means no one can seek beyond 2 Gigabytes on udf, and that there's not protection vs the i_size updates from writers. Signed-off-by: Christoph Hellwig Signed-off-by: Jan Kara commit 01b291bd66564b4bd826326af6bd0b6d17e99439 Author: James Bottomley Date: Thu Aug 21 15:14:14 2008 -0500 [SCSI] fix check of PQ and PDT bits for WLUNs For IBM z series certain LUNs can no longer be accessed. This is because kernel version 2.6.19 a check was introduced not to create a generic SCSI device for devices that return PQ=1 and PDT=0x1f. For WLUNs (see SAM-3, p. 41ff) generic SCSI devices should be created unconditionally without looking at the PQ bit, so add a check for WLUNs in with this test. Acked-by: Martin Petermann Signed-off-by: James Bottomley commit bb0003c1e189d5766b6b39299b08c690c985c4dc Author: Mike Anderson Date: Tue Aug 12 12:11:58 2008 -0700 [SCSI] make scsi_check_sense HARDWARE_ERROR return ADD_TO_MLQUEUE on retry Change scsi_check_sense HARDWARE_ERROR check to return ADD_TO_MLQUEUE if device->retry_hwerror is set to allow retries to occur without restriction of blk_noretry_request check. Signed-off-by: Mike Anderson Signed-off-by: James Bottomley commit c7dbb627a2505f42b2e6b3581f3716d73453dd0c Author: Mike Anderson Date: Tue Aug 12 12:11:57 2008 -0700 [SCSI] scsi_dh: make check_sense return ADD_TO_MLQUEUE Change scsi_dh check_sense functions to return ADD_TO_MLQUEUE to allow retries to occur without restriction of blk_noretry_request check. Signed-off-by: Mike Anderson Acked-by: Chandra Seetharaman Signed-off-by: James Bottomley commit 025270f0eaa2def673747ed6f77cca41f694f354 Author: Hirofumi Nakagawa Date: Thu Aug 21 13:43:37 2008 +0200 [SCSI] zfcp: Remove duplicated unlikely() macros. Some drivers have duplicated unlikely() macros. IS_ERR() already has unlikely() in itself. This patch cleans up such pointless codes although there is no real effect on the kernel's behaviour. Signed-off-by: Hirofumi Nakagawa Signed-off-by: Christof Schmitt Signed-off-by: James Bottomley commit 6139308dca9437975125290698cb9306240f525c Author: Swen Schillig Date: Thu Aug 21 13:43:36 2008 +0200 [SCSI] zfcp: channel cannot be detached due to refcount imbalance Due to an imbalance of the nameserver refcounting, channel devices couldn't be take offline anymore after the channel was activated. Signed-off-by: Swen Schillig Signed-off-by: Christof Schmitt Signed-off-by: James Bottomley commit 9528539cc2d506aa232b0d93881ac4d19738752f Author: Swen Schillig Date: Thu Aug 21 13:43:35 2008 +0200 [SCSI] zfcp: Fix reference counter for remote ports Fix the remote port reference counter handling during ELS ADISC commands and find the remote port by WWPN not by D_IDs that could change. Signed-off-by: Swen Schillig Signed-off-by: Christof Schmitt Signed-off-by: James Bottomley commit f48bf7fb00f74d93105ba69522a3f6c9435d6af3 Author: Christof Schmitt Date: Thu Aug 21 13:43:34 2008 +0200 [SCSI] zfcp: Simplify ccw notify handler The notify handler does not change the list of adapters, it only triggers erp actions to open or shutdown the adapter. We don't need to hold the config semaphore and wait for the erp to complete. This is a prerequisite for a fix in the s390 common i/o code. Signed-off-by: Christof Schmitt Signed-off-by: Martin Petermann Signed-off-by: James Bottomley commit 47f7bba52b01dd881fbd17b4b50c89ecf186eee2 Author: Christof Schmitt Date: Thu Aug 21 13:43:33 2008 +0200 [SCSI] zfcp: Correctly query end flag in gpn_ft response When the last port entry in the gpn_ft response is already a known port, the eval function would skip the end flag and try to attach ports with wwpn 0. Fix this by checking the flag first. Signed-off-by: Christof Schmitt Signed-off-by: Martin Petermann Signed-off-by: James Bottomley commit d4538817287e56abc938900886301a5bdfafbfcd Author: Christof Schmitt Date: Thu Aug 21 13:43:32 2008 +0200 [SCSI] zfcp: Fix request queue locking The request queue lock can be acquired from softirq context when the SCSI midlayer issues commands. Disable softirqs for this lock when commands are issued from zfcp. Signed-off-by: Christof Schmitt Signed-off-by: Martin Petermann Signed-off-by: James Bottomley commit bfad9ceac5d11318c99ae8a0d1e926a380a56edd Author: Stefan Richter Date: Sat Aug 2 19:49:40 2008 +0200 [SCSI] sd: select CRC_T10DIF only when necessary Signed-off-by: Stefan Richter Acked-by: "Martin K. Petersen" Signed-off-by: James Bottomley commit 97e1cfb08616987878f91a46cefdd7fc5fa3dba1 Author: Jan Kara Date: Mon Aug 18 13:44:48 2008 +0200 udf: Fix error paths in udf_new_inode() I case we failed to allocate memory for inode when creating it, we did not properly free block already allocated for this inode. Move memory allocation before the block allocation which fixes this issue (thanks for the idea go to Ingo Oeser ). Also remove a few superfluous initializations already done in udf_alloc_inode(). Reviewed-by: Ingo Oeser Signed-off-by: Jan Kara commit db0badc58e948b810c7a75cfcc48845e2949ee37 Author: Jan Kara Date: Mon Aug 18 13:40:18 2008 +0200 udf: Fix lock inversion between iprune_mutex and alloc_mutex (v2) A memory allocation inside alloc_mutex must not recurse back into the filesystem itself because that leads to lock inversion between iprune_mutex and alloc_mutex (and thus to deadlocks - see traces below). alloc_mutex is actually needed only to update allocation statistics in the superblock so we can drop it before we start allocating memory for the inode. tar D ffff81015b9c8c90 0 6614 6612 ffff8100d5a21a20 0000000000000086 0000000000000000 00000000ffff0000 ffff81015b9c8c90 ffff81015b8f0cd0 ffff81015b9c8ee0 0000000000000000 0000000000000003 0000000000000000 0000000000000000 0000000000000000 Call Trace: [] __mutex_lock_slowpath+0x64/0x9b [] mutex_lock+0xa/0xb [] shrink_icache_memory+0x38/0x200 [] shrink_slab+0xe3/0x15b [] try_to_free_pages+0x221/0x30d [] isolate_pages_global+0x0/0x31 [] __alloc_pages_internal+0x252/0x3ab [] cache_alloc_refill+0x22e/0x47b [] kmem_cache_alloc+0x3b/0x61 [] cache_alloc_refill+0x2fe/0x47b [] __kmalloc+0x76/0x9c [] :udf:udf_new_inode+0x202/0x2e2 [] :udf:udf_create+0x2f/0x16d [] :udf:udf_lookup+0xa6/0xad ... kswapd0 D ffff81015b9d9270 0 125 2 ffff81015b903c28 0000000000000046 ffffffff8028cbb0 00000000fffffffb ffff81015b9d9270 ffff81015b8f0cd0 ffff81015b9d94c0 000000000271b490 ffffe2000271b458 ffffe2000271b420 ffffe20002728dc8 ffffe20002728d90 Call Trace: [] __set_page_dirty+0xeb/0xf5 [] get_dirty_limits+0x1d/0x22f [] __mutex_lock_slowpath+0x64/0x9b [] mutex_lock+0xa/0xb [] :udf:udf_bitmap_free_blocks+0x47/0x1eb [] :udf:udf_discard_prealloc+0xc6/0x172 [] :udf:udf_clear_inode+0x1e/0x48 [] clear_inode+0x6d/0xc4 [] dispose_list+0x56/0xee [] shrink_icache_memory+0x1d0/0x200 [] shrink_slab+0xe3/0x15b [] kswapd+0x346/0x447 ... Reported-by: Tibor Tajti Reviewed-by: Ingo Oeser Signed-off-by: Jan Kara