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* [SPARC64] arch/sparc64/kernel/unaligned.c: Use time_* macrosS.Çağlar Onur2008-02-171-1/+2
| | | | | | | | | | | | The functions time_before, time_before_eq, time_after, and time_after_eq are more robust for comparing jiffies against other values. So following patch implements usage of the time_after() macro, defined at linux/jiffies.h, which deals with wrapping correctly Signed-off-by: S.Çağlar Onur <caglar@pardus.org.tr> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Always register a PROM based early console.David S. Miller2008-02-173-11/+10
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Update defconfig.David S. Miller2008-02-171-10/+22
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Add -mtune=ultrasparc3 if possible.David S. Miller2008-02-171-0/+1
| | | | | | | | | | | | | | This gives better heuristics for the cost of a multiply (fixed 5 cycles), rather than the 'ultrasparc' setting (variable, and unpredictable if the second argument is non-constant). Example code size savings: text data bss dec hex filename 3823690 304040 448880 4576610 45d562 vmlinux 3824521 304040 448880 4577441 45d8a1 vmlinux.orig Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Remove Makefile code for ancient gcc and binutils.David S. Miller2008-02-171-31/+4
| | | | | | | The kernel hasn't supported the compilers which need these tests for years. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Remove DEBUG_BOOTMEM.David S. Miller2008-02-133-47/+1
| | | | | | | We'll replace it in the future with better logging facilities that can be enabled at run time. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC64]: Use shorter "get_zeroed_page" call.Robert P. J. Day2008-02-121-2/+1
| | | | | Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC]: Use shorter form of "get_zeroed_page".Robert P. J. Day2008-02-121-3/+1
| | | | | Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC]: video/cg14.c and video/sbuslib.c build fixesRobert Reif2008-02-122-0/+2
| | | | | | | | Apparently these drivers now need uaccess.h Signed-off-by: Robert Reif <reif@earthlink.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* WMI: initialize wmi_blocks.list even if ACPI is disabledLinus Torvalds2008-02-111-2/+2
| | | | | | | | | | | | Even if we don't want to register the WMI driver, we should initialize the wmi_blocks list to be empty, since we don't want the wmi helper functions to oops just because that basic list has not even been set up. With this, "find_guid()" will happily return "not found" rather than oopsing all over the place, and the callers will then just automatically return false or AE_NOT_FOUND as appropriate. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* x86: vdso_install fixRoland McGrath2008-02-111-10/+12
| | | | | | | | | | The makefile magic for installing the 32-bit vdso images on disk had a little error. A single-line change would fix that bug, but this does a little more to reduce the error-prone duplication of this bit of makefile variable magic. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mempolicy: silently restrict nodemask to allowed nodesKOSAKI Motohiro2008-02-112-28/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kosaki Motohito noted that "numactl --interleave=all ..." failed in the presence of memoryless nodes. This patch attempts to fix that problem. Some background: numactl --interleave=all calls set_mempolicy(2) with a fully populated [out to MAXNUMNODES] nodemask. set_mempolicy() [in do_set_mempolicy()] calls contextualize_policy() which requires that the nodemask be a subset of the current task's mems_allowed; else EINVAL will be returned. A task's mems_allowed will always be a subset of node_states[N_HIGH_MEMORY] i.e., nodes with memory. So, a fully populated nodemask will be declared invalid if it includes memoryless nodes. NOTE: the same thing will occur when running in a cpuset with restricted mem_allowed--for the same reason: node mask contains dis-allowed nodes. mbind(2), on the other hand, just masks off any nodes in the nodemask that are not included in the caller's mems_allowed. In each case [mbind() and set_mempolicy()], mpol_check_policy() will complain [again, resulting in EINVAL] if the nodemask contains any memoryless nodes. This is somewhat redundant as mpol_new() will remove memoryless nodes for interleave policy, as will bind_zonelist()--called by mpol_new() for BIND policy. Proposed fix: 1) modify contextualize_policy logic to: a) remember whether the incoming node mask is empty. b) if not, restrict the nodemask to allowed nodes, as is currently done in-line for mbind(). This guarantees that the resulting mask includes only nodes with memory. NOTE: this is a [benign, IMO] change in behavior for set_mempolicy(). Dis-allowed nodes will be silently ignored, rather than returning an error. c) fold this code into mpol_check_policy(), replace 2 calls to contextualize_policy() to call mpol_check_policy() directly and remove contextualize_policy(). 2) In existing mpol_check_policy() logic, after "contextualization": a) MPOL_DEFAULT: require that in coming mask "was_empty" b) MPOL_{BIND|INTERLEAVE}: require that contextualized nodemask contains at least one node. c) add a case for MPOL_PREFERRED: if in coming was not empty and resulting mask IS empty, user specified invalid nodes. Return EINVAL. c) remove the now redundant check for memoryless nodes 3) remove the now redundant masking of policy nodes for interleave policy from mpol_new(). 4) Now that mpol_check_policy() contextualizes the nodemask, remove the in-line nodes_and() from sys_mbind(). I believe that this restores mbind() to the behavior before the memoryless-nodes patch series. E.g., we'll no longer treat an invalid nodemask with MPOL_PREFERRED as local allocation. [ Patch history: v1 -> v2: - Communicate whether or not incoming node mask was empty to mpol_check_policy() for better error checking. - As suggested by David Rientjes, remove the now unused cpuset_nodes_subset_current_mems_allowed() from cpuset.h v2 -> v3: - As suggested by Kosaki Motohito, fold the "contextualization" of policy nodemask into mpol_check_policy(). Looks a little cleaner. ] Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Tested-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: David Rientjes <rientjes@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'release' of ↵Linus Torvalds2008-02-112-9/+8
|\ | | | | | | | | | | | | 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] Fix build for sim_defconfig
| * [IA64] Fix build for sim_defconfigTony Luck2008-02-112-9/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit bdc807871d58285737d50dc6163d0feb72cb0dc2 broke the build for this config because the sim_defconfig selects CONFIG_HZ=250 but include/asm-ia64/param.h has an ifdef for the simulator to force HZ to 32. So we ended up with a kernel/timeconst.h set for HZ=250 ... which then failed the check for the right HZ value and died with: Drop the #ifdef magic from param.h and make force CONFIG_HZ=32 directly for the simulator. Signed-off-by: Tony Luck <tony.luck@intel.com>
* | Be more robust about bad arguments in get_user_pages()Jonathan Corbet2008-02-111-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So I spent a while pounding my head against my monitor trying to figure out the vmsplice() vulnerability - how could a failure to check for *read* access turn into a root exploit? It turns out that it's a buffer overflow problem which is made easy by the way get_user_pages() is coded. In particular, "len" is a signed int, and it is only checked at the *end* of a do {} while() loop. So, if it is passed in as zero, the loop will execute once and decrement len to -1. At that point, the loop will proceed until the next invalid address is found; in the process, it will likely overflow the pages array passed in to get_user_pages(). I think that, if get_user_pages() has been asked to grab zero pages, that's what it should do. Thus this patch; it is, among other things, enough to block the (already fixed) root exploit and any others which might be lurking in similar code. I also think that the number of pages should be unsigned, but changing the prototype of this function probably requires some more careful review. Signed-off-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'for-linus' of ↵Linus Torvalds2008-02-111-0/+1
|\ \ | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: mlx4_core: Fix build break (missing include)
| * | mlx4_core: Fix build break (missing include)Olof Johansson2008-02-111-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 313abe55 ("mlx4_core: For 64-bit systems, vmap() kernel queue buffers") caused this to pop up on powerpc allyesconfig, looks like a missing include file: drivers/net/mlx4/alloc.c: In function 'mlx4_buf_alloc': drivers/net/mlx4/alloc.c:162: error: implicit declaration of function 'vmap' drivers/net/mlx4/alloc.c:162: error: 'VM_MAP' undeclared (first use in this function) drivers/net/mlx4/alloc.c:162: error: (Each undeclared identifier is reported only once drivers/net/mlx4/alloc.c:162: error: for each function it appears in.) drivers/net/mlx4/alloc.c:162: warning: assignment makes pointer from integer without a cast drivers/net/mlx4/alloc.c: In function 'mlx4_buf_free': drivers/net/mlx4/alloc.c:187: error: implicit declaration of function 'vunmap' Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* | | Add Matt to MAINTAINERS as a SLAB allocator maintainerPekka Enberg2008-02-111-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | Matt is already the maintainer of SLOB which is one of the "SLAB" allocators in the kernel so add him to MAINTAINERS. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Merge branch 'upstream-fixes' of ↵Linus Torvalds2008-02-116-42/+75
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: sata_mv: platform driver allocs dma without create pata_ninja32: setup changes pata_legacy: typo fix pata_amd: Note in the module description it handles Nvidia sata_mv: fix loop with last port libata: ignore deverr on SETXFER if mode is configured pata_via: fix SATA cable detection on cx700
| * | | sata_mv: platform driver allocs dma without createByron Bradley2008-02-111-20/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the sata_mv driver is used as a platform driver, mv_create_dma_pools() is never called so it fails when trying to alloc in mv_pool_start(). Signed-off-by: Byron Bradley <byron.bbradley@gmail.com> Acked-by: Mark Lord <mlord@pobox.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | | pata_ninja32: setup changesAlan Cox2008-02-111-2/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Forcibly set more of the configuration at init time. This seems to fix at least one problem reported. We don't know what most of these bits do, but we do know what windows stuffs there. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | | pata_legacy: typo fixAlan Cox2008-02-111-1/+1
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | | pata_amd: Note in the module description it handles NvidiaAlan Cox2008-02-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This has confused a few people so fix it Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | | sata_mv: fix loop with last portYinghai Lu2008-02-111-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit f351b2d638c3cb0b95adde3549b7bfaf3f991dfa sata_mv: Support SoC controllers cause panic: scsi 4:0:0:0: Direct-Access ATA HITACHI HDS7225S V44O PQ: 0 ANSI: 5 sd 4:0:0:0: [sde] 488390625 512-byte hardware sectors (250056 MB) sd 4:0:0:0: [sde] Write Protect is off sd 4:0:0:0: [sde] Mode Sense: 00 3a 00 00 sd 4:0:0:0: [sde] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 4:0:0:0: [sde] 488390625 512-byte hardware sectors (250056 MB) sd 4:0:0:0: [sde] Write Protect is off sd 4:0:0:0: [sde] Mode Sense: 00 3a 00 00 sd 4:0:0:0: [sde] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sde:<1>BUG: unable to handle kernel NULL pointer dereference at 000000000000001a IP: [<ffffffff806262c7>] mv_interrupt+0x21c/0x4cc PGD 0 Oops: 0000 [1] SMP CPU 3 Modules linked in: Pid: 0, comm: swapper Not tainted 2.6.24-smp-08636-g0afc2ed-dirty #26 RIP: 0010:[<ffffffff806262c7>] [<ffffffff806262c7>] mv_interrupt+0x21c/0x4cc RSP: 0000:ffff8102050bbec8 EFLAGS: 00010297 RAX: 0000000000000008 RBX: 0000000000000000 RCX: 0000000000000003 RDX: 0000000000008000 RSI: 0000000000000286 RDI: ffff8102035180e0 RBP: 0000000000000001 R08: 0000000000000003 R09: ffff8102036613e0 R10: 0000000000000002 R11: ffffffff8061474c R12: ffff8102035bf828 R13: 0000000000000008 R14: ffff81020348ece8 R15: ffffc20002cb2000 FS: 0000000000000000(0000) GS:ffff810405025700(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 000000000000001a CR3: 0000000000201000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process swapper (pid: 0, threadinfo ffff810405094000, task ffff8102050b28c0) Stack: 000000010000000c 0002040000220400 0000001100000002 ffff81020348eda8 0000000000000001 ffff8102035f2cc0 0000000000000000 0000000000000000 0000000000000018 0000000000000000 0000000000000000 ffffffff80269ee8 Call Trace: <IRQ> [<ffffffff80269ee8>] ? handle_IRQ_event+0x25/0x53 [<ffffffff8026b393>] ? handle_fasteoi_irq+0x90/0xc8 [<ffffffff802218e2>] ? do_IRQ+0xf1/0x15f [<ffffffff8021df24>] ? default_idle+0x0/0x55 [<ffffffff8021f361>] ? ret_from_intr+0x0/0xa <EOI> [<ffffffff8023010c>] ? lapic_next_event+0x0/0xa [<ffffffff8021df55>] ? default_idle+0x31/0x55 [<ffffffff8021df50>] ? default_idle+0x2c/0x55 [<ffffffff8021df24>] ? default_idle+0x0/0x55 [<ffffffff8021e00b>] ? cpu_idle+0x92/0xb8 Code: 41 14 85 c0 89 44 24 14 0f 84 9d 02 00 00 f7 d0 01 d6 41 89 d5 89 41 14 8b 41 14 89 34 24 e9 7e 02 00 00 49 63 c5 49 8b 5c c6 48 <f6> 43 1a 80 4c 8b a3 20 37 00 00 0f 85 62 02 00 00 31 c9 41 83 RIP [<ffffffff806262c7>] mv_interrupt+0x21c/0x4cc RSP <ffff8102050bbec8> CR2: 000000000000001a ---[ end trace 2583b5f7a5350584 ]--- Kernel panic - not syncing: Aiee, killing interrupt handler! last_port already include port0 base. this patch change use last_port directly, and move pp assignment later. Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | | libata: ignore deverr on SETXFER if mode is configuredTejun Heo2008-02-111-15/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some controllers (VIA CX700) raise device error on SETXFER even after mode configuration succeeded. Update ata_dev_set_mode() such that device error is ignored if transfer mode is configured correctly. To implement this, device is revalidated even after device error on SETXFER. This fixes kernel bugzilla bug 8563. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * | | pata_via: fix SATA cable detection on cx700Tejun Heo2008-02-111-1/+5
| | |/ | |/| | | | | | | | | | | | | | | | The first port of cx700 is SATA. Fix cable detection. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | | Make topology fallback macros reference their arguments.Andi Kleen2008-02-111-5/+5
| | | | | | | | | | | | | | | | | | | | | This avoids warnings with unreferenced variables in the !NUMA case. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | x86: remove over noisy debug printkThomas Gleixner2008-02-111-7/+0
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | pageattr-test.c contains a noisy debug printk that people reported. The condition under which it prints (randomly tapping into a mem_map[] hole and not being able to c_p_a() there) is valid behavior and not interesting to report. Remove it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuildLinus Torvalds2008-02-112-0/+4
|\ \ | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild: kbuild: fix make V=1
| * | kbuild: fix make V=1Sam Ravnborg2008-02-112-0/+4
| |/ | | | | | | | | | | | | | | | | | | When make -s support were added to filechk to combination created with make V=1 were not covered. Fix it by explicitly cover this case too. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Mike Frysinger <vapier@gentoo.org>
* | Merge branch 'for-linus' of ↵Linus Torvalds2008-02-115-2/+27
|\ \ | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6: selinux: support 64-bit capabilities
| * | selinux: support 64-bit capabilitiesStephen Smalley2008-02-115-2/+27
| |/ | | | | | | | | | | | | | | | | Fix SELinux to handle 64-bit capabilities correctly, and to catch future extensions of capabilities beyond 64 bits to ensure that SELinux is properly updated. Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org>
* | Prevent IDE boot ops on NUMA systemAndi Kleen2008-02-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Without this patch a Opteron test system here oopses at boot with current git. Calling to_pci_dev() on a NULL pointer gives a negative value so the following NULL pointer check never triggers and then an illegal address is referenced. Check the unadjusted original device pointer for NULL instead. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'for-linus' of git://linux-nfs.org/~bfields/linuxLinus Torvalds2008-02-114-14/+40
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://linux-nfs.org/~bfields/linux: SUNPRC: Fix printk format warning nfsd: clean up svc_reserve_auth() NLM: don't requeue block if it was invalidated while GRANT_MSG was in flight NLM: don't reattempt GRANT_MSG when there is already an RPC in flight NLM: have server-side RPC clients default to soft RPC tasks NLM: set RPC_CLNT_CREATE_NOPING for NLM RPC clients
| * | SUNPRC: Fix printk format warningRoland Dreier2008-02-101-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | net/sunrpc/xprtrdma/svc_rdma_sendto.c:160: warning: format '%llx' expects type 'long long unsigned int', but argument 3 has type 'u64' Signed-off-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | nfsd: clean up svc_reserve_auth()J. Bruce Fields2008-02-101-8/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a void function attempting to return the return value from another void function, which seems harmless but extremely weird, and apparently makes some compilers complain. While we're there, clean up a little (e.g. the switch statement had a minor style problem and seemed overkill as long as there's only one case). Thanks to Trond for noticing this. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | NLM: don't requeue block if it was invalidated while GRANT_MSG was in flightJeff Layton2008-02-101-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's possible for lockd to catch a SIGKILL while a GRANT_MSG callback is in flight. If this happens we don't want lockd to insert the block back into the nlm_blocked list. This helps that situation, but there's still a possible race. Fixing that will mean adding real locking for nlm_blocked. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | NLM: don't reattempt GRANT_MSG when there is already an RPC in flightJeff Layton2008-02-101-4/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With the current scheme in nlmsvc_grant_blocked, we can end up with more than one GRANT_MSG callback for a block in flight. Right now, we requeue the block unconditionally so that a GRANT_MSG callback is done again in 30s. If the client is unresponsive, it can take more than 30s for the call already in flight to time out. There's no benefit to having more than one GRANT_MSG RPC queued up at a time, so put it on the list with a timeout of NLM_NEVER before doing the RPC call. If the RPC call submission fails, we requeue it with a short timeout. If it works, then nlmsvc_grant_callback will end up requeueing it with a shorter timeout after it completes. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | NLM: have server-side RPC clients default to soft RPC tasksJeff Layton2008-02-101-2/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that it no longer does an RPC ping, lockd always ends up queueing an RPC task for the GRANT_MSG callback. But, it also requeues the block for later attempts. Since these are hard RPC tasks, if the client we're calling back goes unresponsive the GRANT_MSG callbacks can stack up in the RPC queue. Fix this by making server-side RPC clients default to soft RPC tasks. lockd requeues the block anyway, so this should be OK. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
| * | NLM: set RPC_CLNT_CREATE_NOPING for NLM RPC clientsJeff Layton2008-02-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's currently possible for an unresponsive NLM client to completely lock up a server's lockd. The scenario is something like this: 1) client1 (or a process on the server) takes a lock on a file 2) client2 tries to take a blocking lock on the same file and awaits the callback 3) client2 goes unresponsive (plug pulled, network partition, etc) 4) client1 releases the lock ...at that point the server's lockd will try to queue up a GRANT_MSG callback for client2, but first it requeues the block with a timeout of 30s. nlm_async_call will attempt to bind the RPC client to client2 and will call rpc_ping. rpc_ping entails a sync RPC call and if client2 is unresponsive it will take around 60s for that to time out. Once it times out, it's already time to retry the block and the whole process repeats. Once in this situation, nlmsvc_retry_blocked will never return until the host starts responding again. lockd won't service new calls. Fix this by skipping the RPC ping on NLM RPC clients. This makes nlm_async_call return quickly when called. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds2008-02-1116-159/+107
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: ide: remove stale comment from ide-lib.c ide: fix comment in init_irq() ide: ide_init_port() bugfix ide-disk: fix flush requests (take 2) ide: introduce CONFIG_BLK_DEV_IDEDMA_SFF option bast-ide: build fix ide-tape: remove never executed code ide: fix ide/legacy/gayle.c compilation ide-cd: replace ntohs with generic byteorder macro be16_to_cpu ide: remove stale version number pdc202xx_old: always enable burst mode palm_bk3710: use struct ide_port_info palm_bk3710: port initialization/probing bugfix palm_bk3710: fix ide_unregister() usage palm_bk3710: ide_register_hw() -> ide_device_add() ide: insert BUG_ON() into __ide_set_handler() (take 2) cs5520: remove stale comment ide: another possible ide panic fix for blk-end-request
| * | | ide: remove stale comment from ide-lib.cBartlomiej Zolnierkiewicz2008-02-111-9/+0
| | | | | | | | | | | | | | | | Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | | ide: fix comment in init_irq()Bartlomiej Zolnierkiewicz2008-02-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | APUS support is gone... Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | | ide: ide_init_port() bugfixBartlomiej Zolnierkiewicz2008-02-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On Sunday 10 February 2008, Atsushi Nemoto wrote: > On Sun, 06 Jan 2008 18:03:10 +0100, Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> wrote: > > + /* reset DMA masks only for SFF-style DMA controllers */ > > + if ((d->host_flags && IDE_HFLAG_NO_DMA) == 0 && hwif->dma_base == 0) > > + hwif->swdma_mask = hwif->mwdma_mask = hwif->ultra_mask = 0; > > It might be too late, but "host_flags && IDE_HFLAGS_NO_DMA" seems > wrong for me. Fix regression caused by commmit c413b9b94d9a8e7548cc4b2e04b7df0439ce76fd ("ide: add struct ide_port_info instances to legacy host drivers"). Reported-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | | ide-disk: fix flush requests (take 2)Bartlomiej Zolnierkiewicz2008-02-113-13/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 813a0eb233ee67d7166241a8b389b6a76f2247f9 Author: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Date: Fri Jan 25 22:17:10 2008 +0100 ide: switch idedisk_prepare_flush() to use REQ_TYPE_ATA_TASKFILE requests ... broke flush requests. Allocating IDE command structure on the stack for flush requests is not a very brilliant idea: - idedisk_prepare_flush() only prepares the request and it doesn't wait for it to be completed - there are can be multiple flush requests queued in the queue Fix the problem (per hints from James Bottomley) by: - dynamically allocating ide_task_t instance using kmalloc(..., GFP_ATOMIC) - adding new taskfile flag (IDE_TFLAG_DYN) - calling kfree() in ide_end_drive_command() if IDE_TFLAG_DYN is set (while at it rename 'args' to 'task' and fix whitespace damage) [ This will be fixed properly before 2.6.25 but this bug is rather critical and the proper solution requires some more work + testing. ] Thanks to Sebastian Siewior and Christoph Hellwig for reporting the problem and testing patches (extra thanks to Sebastian for bisecting it to the guilty commmit). Tested-by: Sebastian Siewior <ide-bug@ml.breakpoint.cc> Cc: Christoph Hellwig <hch@infradead.org> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Tejun Heo <htejun@gmail.com> Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | | ide: introduce CONFIG_BLK_DEV_IDEDMA_SFF optionSergei Shtylyov2008-02-113-14/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce new option CONFIG_BLK_DEV_IDEDMA_SFF for non-PCI SFF-8038i compatible bus mastering IDE controllers (which there are a few known), thus fixing a hack made for Palmchip BK3710 controller... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Anton Salnikov <asalnikov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | | bast-ide: build fixBartlomiej Zolnierkiewicz2008-02-111-8/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On Saturday 09 February 2008, Adrian Bunk wrote: > Commit 9e016a719209d95338e314b46c3012cc7feaaeec causes the following > compile error: > > <-- snip --> > > ... > CC drivers/ide/arm/bast-ide.o > /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ide/arm/bast-ide.c: In function 'bastide_register': > /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ide/arm/bast-ide.c:31: error: 'hwif' redeclared as different kind of symbol > /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ide/arm/bast-ide.c:29: error: previous definition of 'hwif' was here > make[4]: *** [drivers/ide/arm/bast-ide.o] Error 1 > > <-- snip --> Remove 'ide_hwif_t **hwif' argument from bastide_register() (together with write-only ifs[]). Cc: Adrian Bunk <bunk@kernel.org> Cc: Russell King <rmk@arm.linux.org.uk> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | | ide-tape: remove never executed codeBartlomiej Zolnierkiewicz2008-02-111-34/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | rq->cmd[0] is never set to REQ_IDETAPE_READ_BUFFER so remove REQ_IDETAPE_READ_BUFFER handling from idetape_create_write_cmd() and the define itself. Then remove no longer used idetape_create_read_buffer_cmd() and IDETAPE_RETRIEVE_FAULTY_BLOCK define. There should be no functional changes caused by this patch. Cc: Borislav Petkov <petkovbb@gmail.com> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | | ide: fix ide/legacy/gayle.c compilationAdrian Bunk2008-02-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | | ide-cd: replace ntohs with generic byteorder macro be16_to_cpuBorislav Petkov2008-02-111-1/+1
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
generated by cgit v1.1 at 2024-12-24 03:45:22 +0000