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* locks: allow lockd to process blocked locks during grace periodJ. Bruce Fields2008-09-291-9/+3
| | | | | | | | | | | | The check here is currently harmless but unnecessary, since, as the comment notes, there aren't any blocked-lock callbacks to process during the grace period anyway. And eventually we want to allow multiple grace periods that come and go for different filesystems over the course of the lifetime of lockd, at which point this check is just going to get in the way. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* knfsd: allocate readahead cache in individual chunksJeff Layton2008-09-291-24/+35
| | | | | | | | | | | | | | | | | | | I had a report from someone building a large NFS server that they were unable to start more than 585 nfsd threads. It was reported against an older kernel using the slab allocator, and I tracked it down to the large allocation in nfsd_racache_init failing. It appears that the slub allocator handles large allocations better, but large contiguous allocations can often be problematic. There doesn't seem to be any reason that the racache has to be allocated as a single large chunk. This patch breaks this up so that the racache is built up from separate allocations. (Thanks also to Takashi Iwai for a bugfix.) Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Cc: Takashi Iwai <tiwai@suse.de>
* nfsd: nfs4xdr decode_stateid helper functionBenny Halevy2008-09-291-44/+55
| | | | | Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: properly xdr-decode NFS4_OPEN_CLAIM_DELEGATE_CUR stateidBenny Halevy2008-09-291-1/+3
| | | | | Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: don't declare p in ENCODE_SEQID_OP_HEADBenny Halevy2008-09-291-1/+1
| | | | | | | | | | After using the encode_stateid helper the "p" pointer declared by ENCODE_SEQID_OP_HEAD is warned as unused. In the single site where it is still needed it can be declared separately using the ENCODE_HEAD macro. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: nfs4xdr encode_stateid helper functionBenny Halevy2008-09-291-44/+32
| | | | | Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: fix nfsd4_encode_open buffer space reservationBenny Halevy2008-09-291-1/+1
| | | | | | | | | nfsd4_encode_open first reservation is currently for 36 + sizeof(stateid_t) while it writes after the stateid a cinfo (20 bytes) and 5 more 4-bytes words, for a total of 40 + sizeof(stateid_t). Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: properly xdr-encode deleg stateid returned from openBenny Halevy2008-09-291-2/+6
| | | | | Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: properly xdr-encode stateid4.seqid as uint32_t for cb_recallBenny Halevy2008-09-291-1/+2
| | | | | Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* Configure out file locking featuresThomas Petazzoni2008-09-296-9/+70
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds the CONFIG_FILE_LOCKING option which allows to remove support for advisory locks. With this patch enabled, the flock() system call, the F_GETLK, F_SETLK and F_SETLKW operations of fcntl() and NFS support are disabled. These features are not necessarly needed on embedded systems. It allows to save ~11 Kb of kernel code and data: text data bss dec hex filename 1125436 118764 212992 1457192 163c28 vmlinux.old 1114299 118564 212992 1445855 160fdf vmlinux -11137 -200 0 -11337 -2C49 +/- This patch has originally been written by Matt Mackall <mpm@selenic.com>, and is part of the Linux Tiny project. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Matt Mackall <mpm@selenic.com> Cc: matthew@wil.cx Cc: linux-fsdevel@vger.kernel.org Cc: mpm@selenic.com Cc: akpm@linux-foundation.org Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* nfsd: permit unauthenticated stat of export rootJ. Bruce Fields2008-09-295-18/+33
| | | | | | | | | | | | | | | | | | | | | | | | RFC 2623 section 2.3.2 permits the server to bypass gss authentication checks for certain operations that a client may perform when mounting. In the case of a client that doesn't have some form of credentials available to it on boot, this allows it to perform the mount unattended. (Presumably real file access won't be needed until a user with credentials logs in.) Being slightly more lenient allows lots of old clients to access krb5-only exports, with the only loss being a small amount of information leaked about the root directory of the export. This affects only v2 and v3; v4 still requires authentication for all access. Thanks to Peter Staubach testing against a Solaris client, which suggesting addition of v3 getattr, to the list, and to Trond for noting that doing so exposes no additional information. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Cc: Peter Staubach <staubach@redhat.com> Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
* SUNRPC: Use proper INADDR_ANY when setting up RPC services on IPv6Chuck Lever2008-09-291-6/+33
| | | | | | | | | | Teach svc_create_xprt() to use the correct ANY address for AF_INET6 based RPC services. No caller uses AF_INET6 yet. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* SUNRPC: Add address family field to svc_serv data structureChuck Lever2008-09-295-11/+15
| | | | | | | | | | Introduce and initialize an address family field in the svc_serv structure. This field will determine what family to use for the service's listener sockets and what families are advertised via the local rpcbind daemon. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
* Linux 2.6.27-rc7v2.6.27-rc7Linus Torvalds2008-09-211-1/+1
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* Merge branch 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds2008-09-213-12/+12
|\ | | | | | | | | | | | | * 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: hwmon: (ad7414) Make ad7414_update_device() static hwmon: (it87) Fix fan tachometer reading in IT8712F rev 0x7 (I) hwmon: (atxp1) Fix device detection logic
| * hwmon: (ad7414) Make ad7414_update_device() staticAdrian Bunk2008-09-201-1/+1
| | | | | | | | | | | | | | | | This patch makes the needlessly global ad7414_update_device() static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Sean MacLennan <smaclennan@pikatech.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
| * hwmon: (it87) Fix fan tachometer reading in IT8712F rev 0x7 (I)Andrew Paprocki2008-09-201-2/+2
| | | | | | | | | | | | | | | | | | | | The IT8712F v0.9.1 datasheet applies to revisions >= 0x8 (J). The driver was incorrectly attempting to enable 16-bit fan readings on rev 0x7 (I) which led to incorrect RPM values. Signed-off-by: Andrew Paprocki <andrew@ishiboo.com> Tested-by: John Gumb <john.gumb@tandberg.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
| * hwmon: (atxp1) Fix device detection logicJean Delvare2008-09-201-9/+9
| | | | | | | | | | | | | | | | The atxp1 device detection code has a major logic flaw, fix it. Not sure how we managed to miss this when the driver was merged... Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Sebastian Witt <se.witt@gmx.net>
* | Merge branch 'kvm-updates/2.6.27' of ↵Linus Torvalds2008-09-211-6/+1
|\ \ | | | | | | | | | | | | | | | | | | 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: ia64: 'struct fdesc' build fix
| * | KVM: ia64: 'struct fdesc' build fixJes Sorensen2008-09-191-6/+1
| |/ | | | | | | | | | | | | | | | | | | Commit 4611a77 ("[IA64] fix compile failure with non modular builds") introduced struct fdesc into asm/elf.h, which duplicates KVM's definition. Remove the latter to avoid the build error. Signed-off-by: Jes Sorensen <jes@sgi.com> Acked-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* | Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds2008-09-216-24/+75
|\ \ | | | | | | | | | | | | | | | | | | | | | * 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [MIPS] vmlinux.lds.S: handle .text.* [MIPS] Fix potential latency problem due to non-atomic cpu_wait. [MIPS] SMTC: Clear TIF_FPUBOUND on clone / fork. [MIPS] Fix 64-bit IP checksum code
| * | [MIPS] vmlinux.lds.S: handle .text.*Atsushi Nemoto2008-09-211-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | The -ffunction-sections puts each text in .text.function_name section. Without this patch, most functions are placed outside _text..._etext area and it breaks show_stacktrace(), etc. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | [MIPS] Fix potential latency problem due to non-atomic cpu_wait.Atsushi Nemoto2008-09-213-20/+55
| | | | | | | | | | | | | | | | | | | | | | | | If an interrupt happened between checking of NEED_RESCHED and WAIT instruction, adjust EPC to restart from checking of NEED_RESCHED. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | [MIPS] SMTC: Clear TIF_FPUBOUND on clone / fork.Ralf Baechle2008-09-211-0/+2
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | [MIPS] Fix 64-bit IP checksum codeAtsushi Nemoto2008-09-211-4/+17
| |/ | | | | | | | | | | | | | | | | | | | | | | Use unsigned loads to avoid possible misscalculation of IP checksums. This bug was instruced in f761106cd728bcf65b7fe161b10221ee00cf7132 (lmo) / ed99e2bc1dc5dc54eb5a019f4975562dbef20103 (kernel.org). [Original fix by Atsushi. Improved instruction scheduling and fix for unaligned unsigned load by me -- Ralf] Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | Merge branch 'for-linus' of ↵Linus Torvalds2008-09-214-11/+18
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc: mmc_test: initialize mmc_test_lock statically mmc_block: handle error from mmc_register_driver() atmel-mci: Set MMC_CAP_NEEDS_POLL if no detect_pin atmel-mci: Fix bogus debugfs file size atmel-mci: Fix memory leak in atmci_regs_show atmel-mci: debugfs: enable clock before dumping regs tmio_mmc: fix compilation with debug enabled
| * | mmc_test: initialize mmc_test_lock staticallyAkinobu Mita2008-09-201-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The mutex mmc_test_lock is initialized at every time mmc_test device is probed. Probing another mmc_test device may break the mutex, if the probe function is called while the mutex is locked. This patch fixes it by statically initializing mmc_test_lock. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| * | mmc_block: handle error from mmc_register_driver()Akinobu Mita2008-09-201-2/+7
| | | | | | | | | | | | | | | | | | | | | | | | Check error from mmc_register_driver() and properly unwind block device registration. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| * | atmel-mci: Set MMC_CAP_NEEDS_POLL if no detect_pinHaavard Skinnemoen2008-09-201-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | This allows the mmc core to detect card insertion/removal for slots that don't have any CD pin wired up. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| * | atmel-mci: Fix bogus debugfs file sizeHaavard Skinnemoen2008-09-201-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | We used to store a binary register snapshot in the "regs" file, so we set the file size to be the size of this snapshot. This is no longer valid since we switched to using seq_file. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| * | atmel-mci: Fix memory leak in atmci_regs_showHaavard Skinnemoen2008-09-201-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | The debugfs hook atmci_regs_show allocates a temporary buffer for storing a register snapshot, but it doesn't free it before returning. Plug this leak. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| * | atmel-mci: debugfs: enable clock before dumping regsHaavard Skinnemoen2008-09-201-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | Make sure that the peripheral clock is enabled before reading the MMIO registers for the debugfs "regs" dump. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
| * | tmio_mmc: fix compilation with debug enabledDmitry Baryshkov2008-09-201-2/+2
| | | | | | | | | | | | | | | | | | Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Acked-by: Ian Molton <spyro@f2s.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
* | | MAINTAINERS: Various fixesJean Delvare2008-09-211-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | * Normalize some S: entries to match the enumeration at the beginning of the file. * Change one mailing list entry from S: to L:. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | MAINTAINERS: Trivial whitespace cleanupsJean Delvare2008-09-211-81/+81
| |/ |/| | | | | | | | | | | | | * Drop trailing whitespace. * Replace spaces and combinations of spaces and tabs by single tabs. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6Linus Torvalds2008-09-192-1/+4
|\ \ | | | | | | | | | | | | | | | * 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: [S390] cio: fix orb initialization in cio_start_key [S390] cio: Fix driver_data handling for ccwgroup devices.
| * | [S390] cio: fix orb initialization in cio_start_keyStefan Weinhuber2008-09-161-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The functions cio_tm_start_key and cio_start_key use the same private orb structure of a subchannel, so the orb needs to be cleared of old data before it is used again. A respective memset is missing from cio_start_key and hereby added. Signed-off-by: Stefan Weinhuber <wein@de.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | [S390] cio: Fix driver_data handling for ccwgroup devices.Cornelia Huck2008-09-161-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since 16f7f9564c3ae190954f2ec55f385a268b93ac4d, we've seen oopses when grouping/ungrouping devices: Unable to handle kernel pointer dereference at virtual kernel address 0000000000 114000 Oops: 0004 [#1] PREEMPT SMP Modules linked in: bonding qeth_l2 dm_multipath sunrpc qeth_l3 dm_mod qeth chsc_ sch ccwgroup CPU: 1 Not tainted 2.6.26-29.x.20080815-s390xdefault #1 Process iperf (pid: 24412, task: 000000003f446038, ksp: 000000003c929e08) Krnl PSW : 0404d00180000000 000003e00006f6e6 (qeth_irq+0xda/0xb28 [qeth]) R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 EA:3 Krnl GPRS: 0000000000000000 000003e000000003 0000000000000000 0000000000114ccc 000000003fb82e48 000003e00006f60c 000000000000000c 000000003ce72100 0000000000114944 000000003fb82e48 0000000000114ccc 000000003fe8fd28 000003e000066000 000003e000076128 000000003fe8fdb8 000000003fe8fd28 Krnl Code: 000003e00006f6da: bf3f2024 icm %r3,15,36(%r2) 000003e00006f6de: a774023c brc 7,3e00006fb56 000003e00006f6e2: a7280000 lhi %r2,0 >000003e00006f6e6: 5020a1a0 st %r2,416(%r10) 000003e00006f6ea: 58109000 l %r1,0(%r9) 000003e00006f6ee: a7111000 tmll %r1,4096 000003e00006f6f2: a77400f9 brc 7,3e00006f8e4 000003e00006f6f6: 8810000c srl %r1,12 Call Trace: ([<000000003fe8fd20>] 0x3fe8fd20) [<000000000033bf2a>] ccw_device_call_handler+0xb2/0xd8 [<0000000000339e1c>] ccw_device_irq+0x124/0x164 [<0000000000339758>] io_subchannel_irq+0x8c/0x118 [<00000000003309ba>] do_IRQ+0x192/0x1bc [<0000000000114f66>] io_return+0x0/0x8 [<00000000001149cc>] sysc_do_svc+0x0/0x22 ([<0000000000114a18>] sysc_noemu+0x10/0x16) [<00000200002e047c>] 0x200002e047c Last Breaking-Event-Address: [<000003e00006f6d6>] qeth_irq+0xca/0xb28 [qeth] The problem is that dev->driver_data for a ccw device is NULL, while it should point to the ccwgroup device it is a member of. This happened due to incorrect cleanup if creating a ccwgroup device failed because the ccw devices were already grouped. Fix this by setting cdev[i] to NULL in the error handling of ccwgroup_create_from_string() after we give up our reference and by checking if the driver_data points to the ccwgroup device in ccwgroup_release() just to be really sure. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | Merge git://oss.sgi.com:8090/xfs/linux-2.6Linus Torvalds2008-09-197-47/+119
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://oss.sgi.com:8090/xfs/linux-2.6: [XFS] Don't do I/O beyond eof when unreserving space [XFS] Fix use-after-free with buffers [XFS] Prevent lockdep false positives when locking two inodes. [XFS] Fix barrier status change detection. [XFS] Prevent direct I/O from mapping extents beyond eof [XFS] Fix regression introduced by remount fixup [XFS] Move memory allocations for log tracing out of the critical path
| * | | [XFS] Don't do I/O beyond eof when unreserving spaceLachlan McIlroy2008-09-171-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When unreserving space with boundaries that are not block aligned we round up the start and round down the end boundaries and then use this function, xfs_zero_remaining_bytes(), to zero the parts of the blocks that got dropped during the rounding. The problem is we don't consider if these blocks are beyond eof. Worse still is if we encounter delayed allocations beyond eof we will try to use the magic delayed allocation block number as a real block number. If the file size is ever extended to expose these blocks then we'll go through xfs_zero_eof() to zero them anyway. SGI-PV: 983683 SGI-Modid: xfs-linux-melb:xfs-kern:32055a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org>
| * | | [XFS] Fix use-after-free with buffersLachlan McIlroy2008-09-171-24/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We have a use-after-free issue where log completions access buffers via the buffer log item and the buffer has already been freed. Fix this by taking a reference on the buffer when attaching the buffer log item and release the hold when the buffer log item is detached and we no longer need the buffer. Also create a new function xfs_buf_item_free() to combine some common code. SGI-PV: 985757 SGI-Modid: xfs-linux-melb:xfs-kern:32025a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org>
| * | | [XFS] Prevent lockdep false positives when locking two inodes.David Chinner2008-09-172-1/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If we call xfs_lock_two_inodes() to grab both the iolock and the ilock, then drop the ilocks on both inodes, then grab them again (as xfs_swap_extents() does) then lockdep will report a locking order problem. This is a false positive. To avoid this, disallow xfs_lock_two_inodes() fom locking both inode locks at once - force calers to make two separate calls. This means that nested dropping and regaining of the ilocks will retain the same lockdep subclass and so lockdep will not see anything wrong with this code. SGI-PV: 986238 SGI-Modid: xfs-linux-melb:xfs-kern:31999a Signed-off-by: David Chinner <david@fromorbit.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Peter Leckie <pleckie@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
| * | | [XFS] Fix barrier status change detection.David Chinner2008-09-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current code in xlog_iodone() uses the wrong macro to check if the barrier has been cleared due to an EOPNOTSUPP error form the lower layer. SGI-PV: 986143 SGI-Modid: xfs-linux-melb:xfs-kern:31984a Signed-off-by: David Chinner <david@fromorbit.com> Signed-off-by: Nathaniel W. Turner <nate@houseofnate.net> Signed-off-by: Peter Leckie <pleckie@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
| * | | [XFS] Prevent direct I/O from mapping extents beyond eofLachlan McIlroy2008-09-171-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With the help from some tracing I found that we try to map extents beyond eof when doing a direct I/O read. It appears that the way to inform the generic direct I/O path (ie do_direct_IO()) that we have breached eof is to return an unmapped buffer from xfs_get_blocks_direct(). This will cause do_direct_IO() to jump to the hole handling code where is will check for eof and then abort. This problem was found because a direct I/O read was trying to map beyond eof and was encountering delayed allocations. The delayed allocations beyond eof are speculative allocations and they didn't get converted when the direct I/O flushed the file because there was only enough space in the current AG to convert and write out the dirty pages within eof. Note that xfs_iomap_write_allocate() wont necessarily convert all the delayed allocation passed to it - it will return after allocating the first extent - so if the delayed allocation extends beyond eof then it will stay that way. SGI-PV: 983683 SGI-Modid: xfs-linux-melb:xfs-kern:31929a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org>
| * | | [XFS] Fix regression introduced by remount fixupChristoph Hellwig2008-09-171-0/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Logically we would return an error in xfs_fs_remount code to prevent users from believing they might have changed mount options using remount which can't be changed. But unfortunately mount(8) adds all options from mtab and fstab to the mount arguments in some cases so we can't blindly reject options, but have to check for each specified option if it actually differs from the currently set option and only reject it if that's the case. Until that is implemented we return success for every remount request, and silently ignore all options that we can't actually change. SGI-PV: 985710 SGI-Modid: xfs-linux-melb:xfs-kern:31908a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Tim Shimmin <tes@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
| * | | [XFS] Move memory allocations for log tracing out of the critical pathLachlan McIlroy2008-09-172-21/+40
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Memory allocations for log->l_grant_trace and iclog->ic_trace are done on demand when the first event is logged. In xlog_state_get_iclog_space() we call xlog_trace_iclog() under a spinlock and allocating memory here can cause us to sleep with a spinlock held and deadlock the system. For the log grant tracing we use KM_NOSLEEP but that means we can lose trace entries. Since there is no locking to serialize the log grant tracing we could race and have multiple allocations and leak memory. So move the allocations to where we initialize the log/iclog structures. Use KM_NOFS to avoid recursing into the filesystem and drop log->l_trace since it's not even used. SGI-PV: 983738 SGI-Modid: xfs-linux-melb:xfs-kern:31896a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2008-09-197-23/+42
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: IPoIB: Fix deadlock on RTNL between bcast join comp and ipoib_stop() RDMA/nes: Fix client side QP destroy IB/mlx4: Fix up fast register page list format mlx4_core: Set RAE and init mtt_sz field in FRMR MPT entries
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| *-. \ \ Merge branches 'ipoib', 'mlx4' and 'nes' into for-linusRoland Dreier2008-09-164-13/+18
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| | | * | | RDMA/nes: Fix client side QP destroyFaisal Latif2008-09-161-9/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix QP not being destroyed properly on the client, which leads to userspace programs hanging on exit. This is a missing chunk from the connection management rewrite in commit 6492cdf3 ("RDMA/nes: CM connection setup/teardown rework"). Signed-off-by: Faisal Latif <flatif@neteffect.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| | * | | | IB/mlx4: Fix up fast register page list formatVladimir Sokolovsky2008-09-153-2/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Byte swap the addresses in the page list for fast register work requests to big endian to match what the HCA expectx. Also, the addresses must have the "present" bit set so that the HCA knows it can access them. Otherwise the HCA will fault the first time it accesses the memory region. Signed-off-by: Vladimir Sokolovsky <vlad@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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