GitHub/exynos8895/android_kernel_samsung_universal8895.git
15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6
Linus Torvalds [Thu, 26 Mar 2009 18:13:06 +0000 (11:13 -0700)]
Merge git://git./linux/kernel/git/bart/ide-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (53 commits)
  ide: use try_to_identify() in ide_driveid_update()
  ide: clear drive IRQ after re-enabling local IRQs in ide_driveid_update()
  ide: sanitize SELECT_MASK() usage in ide_driveid_update()
  ide: classify device type in do_probe()
  ide: remove broken EXABYTENEST support
  ide: shorten timeout value in ide_driveid_update()
  ide: propagate AltStatus workarounds to ide_driveid_update()
  ide: fix kmalloc() failure handling in ide_driveid_update()
  mn10300: remove <asm/ide.h>
  frv: remove <asm/ide.h>
  ide: remove pciirq argument from ide_pci_setup_ports()
  ide: fix ->init_chipset method to return 'int' value
  ide: remove try_to_identify() wrapper
  ide: remove no longer needed IRQ auto-probing from try_to_identify() (v2)
  ide: remove no longer needed IRQ fallback code from hwif_init()
  amd74xx: remove no longer needed ->init_hwif method
  ide: remove no longer needed IDE_HFLAG[_FORCE]_LEGACY_IRQS
  ide: use ide_pci_is_in_compatibility_mode() in ide_pci_init_{one,two}()
  ide: use pci_get_legacy_ide_irq() in ide_pci_init_{one,two}()
  ide: handle IDE_HFLAG[_FORCE]_LEGACY_IRQS in ide_pci_init_{one,two}()
  ...

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
Linus Torvalds [Thu, 26 Mar 2009 18:11:23 +0000 (11:11 -0700)]
Merge git://git./linux/kernel/git/lethal/sh-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (96 commits)
  sh: add support for SMSC Polaris platform
  sh: fix the HD64461 level-triggered interrupts handling
  sh: sh-rtc wakeup support
  sh: sh-rtc invalid time rework
  sh: sh-rtc carry interrupt rework
  sh: disallow kexec virtual entry
  sh: kexec jump: fix for ftrace.
  sh: kexec: Drop SR.BL bit toggling.
  sh: add kexec jump support
  sh: rework kexec segment code
  sh: simplify kexec vbr code
  sh: Flush only the needed range when unmapping a VMA.
  sh: Update debugfs ASID dumping for 16-bit ASID support.
  sh: tlb-pteaex: Kill off legacy PTEA updates.
  sh: Support for extended ASIDs on PTEAEX-capable SH-X3 cores.
  sh: sh7763rdp: Change IRQ number for sh_eth of sh7763rdp
  sh: espt-giga board support
  sh: dma: Make G2 DMA configurable.
  sh: dma: Make PVR2 DMA configurable.
  sh: Move IRQ multi definition of DMAC to defconfig
  ...

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw
Linus Torvalds [Thu, 26 Mar 2009 18:08:47 +0000 (11:08 -0700)]
Merge git://git./linux/kernel/git/steve/gfs2-2.6-nmw

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw:
  GFS2: Fix freeze issue
  Fix a minor bug in the previous patch
  GFS2: Clean up of glops.c
  GFS2: Fix locking bug in failed shared to exclusive conversion
  GFS2: Pagecache usage optimization on GFS2
  GFS2: fix sparse warning: Should it be static?
  GFS2: fix sparse warnings: constant is so big it is ...
  GFS2: Support quota/noquota mount arguments
  GFS2: Fix alignment issue and tidy gfs2_bitfit
  GFS2: Add a "demote a glock" interface to sysfs
  GFS2: Expose UUID via sysfs/uevent
  GFS2: Support generation of discard requests
  GFS2: Fix deadlock on journal flush
  GFS2: Fix error path ref counting for root inode
  GFS2: Remove unused field from glock
  GFS2: Merge lock_dlm module into GFS2
  GFS2: Remove "double" locking in quota
  GFS2: change gfs2_quota_scan into a shrinker
  GFS2: Bring back lvb-related stuff to lock_nolock to support quotas
  GFS2: Fix remount argument parsing

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6
Linus Torvalds [Thu, 26 Mar 2009 18:05:58 +0000 (11:05 -0700)]
Merge git://git./linux/kernel/git/hskinnemoen/avr32-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6:
  avr32: remove duplicated #include
  avr32: fix out-of-range rjmp instruction on large kernels
  avr32: Fix out-of-range rcalls in large kernels

15 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Thu, 26 Mar 2009 18:05:17 +0000 (11:05 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: (430 commits)
  ALSA: hda - Add quirk for Acer Ferrari 5000
  ALSA: hda - Use cached calls to get widget caps and pin caps
  ALSA: hda - Don't create empty/single-item input source
  ALSA: hda - Fix the wrong pin-cap check in patch_realtek.c
  ALSA: hda - Cache pin-cap values
  ALSA: hda - Avoid output amp manipulation to digital mic pins
  ALSA: hda - Add function id to proc output
  ALSA: pcm - Safer boundary checks
  ALSA: hda - Detect digital-mic inputs on ALC663 / ALC272
  ALSA: sound/ali5451: typo: s/resouces/resources/
  ALSA: hda - Don't show the current connection for power widgets
  ALSA: Fix wrong pointer to dev_err() in arm/pxa2xx-ac97-lib.c
  ASoC: Declare Headset as Mic and Headphone widgets for SDP3430
  ASoC: OMAP: N810: Add more jack functions
  ASoC: OMAP: N810: Mark not connected input pins
  ASoC: Add FLL support for WM8400
  ALSA: hda - Don't reset stream at each prepare callback
  ALSA: hda - Don't reset BDL unnecessarily
  ALSA: pcm - Fix delta calculation at boundary overlap
  ALSA: pcm - Reset invalid position even without debug option
  ...

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Thu, 26 Mar 2009 18:04:34 +0000 (11:04 -0700)]
Merge git://git./linux/kernel/git/herbert/crypto-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (29 commits)
  crypto: sha512-s390 - Add missing block size
  hwrng: timeriomem - Breaks an allyesconfig build on s390:
  nlattr: Fix build error with NET off
  crypto: testmgr - add zlib test
  crypto: zlib - New zlib crypto module, using pcomp
  crypto: testmgr - Add support for the pcomp interface
  crypto: compress - Add pcomp interface
  netlink: Move netlink attribute parsing support to lib
  crypto: Fix dead links
  hwrng: timeriomem - New driver
  crypto: chainiv - Use kcrypto_wq instead of keventd_wq
  crypto: cryptd - Per-CPU thread implementation based on kcrypto_wq
  crypto: api - Use dedicated workqueue for crypto subsystem
  crypto: testmgr - Test skciphers with no IVs
  crypto: aead - Avoid infinite loop when nivaead fails selftest
  crypto: skcipher - Avoid infinite loop when cipher fails selftest
  crypto: api - Fix crypto_alloc_tfm/create_create_tfm return convention
  crypto: api - crypto_alg_mod_lookup either tested or untested
  crypto: amcc - Add crypt4xx driver
  crypto: ansi_cprng - Add maintainer
  ...

15 years agoMerge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
Linus Torvalds [Thu, 26 Mar 2009 18:04:08 +0000 (11:04 -0700)]
Merge branch 'next' of git://git./linux/kernel/git/davej/cpufreq

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq: (35 commits)
  [CPUFREQ] Prevent p4-clockmod from auto-binding to the ondemand governor.
  [CPUFREQ] Make cpufreq-nforce2 less obnoxious
  [CPUFREQ] p4-clockmod reports wrong frequency.
  [CPUFREQ] powernow-k8: Use a common exit path.
  [CPUFREQ] Change link order of x86 cpufreq modules
  [CPUFREQ] conservative: remove 10x from def_sampling_rate
  [CPUFREQ] conservative: fixup governor to function more like ondemand logic
  [CPUFREQ] conservative: fix dbs_cpufreq_notifier so freq is not locked
  [CPUFREQ] conservative: amend author's email address
  [CPUFREQ] Use swap() in longhaul.c
  [CPUFREQ] checkpatch cleanups for acpi-cpufreq
  [CPUFREQ] powernow-k8: Only print error message once, not per core.
  [CPUFREQ] ondemand/conservative: sanitize sampling_rate restrictions
  [CPUFREQ] ondemand/conservative: deprecate sampling_rate{min,max}
  [CPUFREQ] powernow-k8: Always compile powernow-k8 driver with ACPI support
  [CPUFREQ] Introduce /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_transition_latency
  [CPUFREQ] checkpatch cleanups for powernow-k8
  [CPUFREQ] checkpatch cleanups for ondemand governor.
  [CPUFREQ] checkpatch cleanups for powernow-k7
  [CPUFREQ] checkpatch cleanups for speedstep related drivers.
  ...

15 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Thu, 26 Mar 2009 18:03:39 +0000 (11:03 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/security-testing-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: (71 commits)
  SELinux: inode_doinit_with_dentry drop no dentry printk
  SELinux: new permission between tty audit and audit socket
  SELinux: open perm for sock files
  smack: fixes for unlabeled host support
  keys: make procfiles per-user-namespace
  keys: skip keys from another user namespace
  keys: consider user namespace in key_permission
  keys: distinguish per-uid keys in different namespaces
  integrity: ima iint radix_tree_lookup locking fix
  TOMOYO: Do not call tomoyo_realpath_init unless registered.
  integrity: ima scatterlist bug fix
  smack: fix lots of kernel-doc notation
  TOMOYO: Don't create securityfs entries unless registered.
  TOMOYO: Fix exception policy read failure.
  SELinux: convert the avc cache hash list to an hlist
  SELinux: code readability with avc_cache
  SELinux: remove unused av.decided field
  SELinux: more careful use of avd in avc_has_perm_noaudit
  SELinux: remove the unused ae.used
  SELinux: check seqno when updating an avc_node
  ...

15 years agoMerge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
Linus Torvalds [Thu, 26 Mar 2009 18:02:50 +0000 (11:02 -0700)]
Merge branch 'upstream' of git://ftp.linux-mips.org/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  MIPS: R2: Fix problem with code that incorrectly modifies ebase.
  MIPS: Change {set,clear,change}_c0_<foo> to return old value.
  MIPS: compat: Remove duplicated #include
  MIPS: VR5500: Enable prefetch
  MIPS: Fix oops in dma_unmap_page on not coherent mips platforms

15 years agowriteback: double the dirty thresholds
Wu Fengguang [Mon, 23 Mar 2009 00:57:38 +0000 (08:57 +0800)]
writeback: double the dirty thresholds

Enlarge default dirty ratios from 5/10 to 10/20.  This fixes [Bug
#12809] iozone regression with 2.6.29-rc6.

The iozone benchmarks are performed on a 1200M file, with 8GB ram.

  iozone -i 0 -i 1 -i 2 -i 3 -i 4 -r 4k -s 64k -s 512m -s 1200m -b tmp.xls
  iozone -B -r 4k -s 64k -s 512m -s 1200m -b tmp.xls

The performance regression is triggered by commit 1cf6e7d83bf3(mm: task
dirty accounting fix), which makes more correct/thorough dirty
accounting.

The default 5/10 dirty ratios were picked (a) with the old dirty logic
and (b) largely at random and (c) designed to be aggressive.  In
particular, that (a) means that having fixed some of the dirty
accounting, maybe the real bug is now that it was always too aggressive,
just hidden by an accounting issue.

The enlarged 10/20 dirty ratios are just about enough to fix the regression.

[ We will have to look at how this affects the old fsync() latency issue,
  but that probably will need independent work.  - Linus ]

Cc: Nick Piggin <npiggin@suse.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Reported-by: "Lin, Ming M" <ming.m.lin@intel.com>
Tested-by: "Lin, Ming M" <ming.m.lin@intel.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMake relatime default
Matthew Garrett [Thu, 26 Mar 2009 17:53:14 +0000 (17:53 +0000)]
Make relatime default

Change the default behaviour of the kernel to use relatime for all
filesystems. This can be overridden with the "strictatime" mount
option.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoAdd a strictatime mount option
Matthew Garrett [Thu, 26 Mar 2009 17:49:56 +0000 (17:49 +0000)]
Add a strictatime mount option

Add support for explicitly requesting full atime updates. This makes it
possible for kernels to default to relatime but still allow userspace to
override it.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoAllow relatime to update atime once a day
Matthew Garrett [Thu, 26 Mar 2009 17:32:14 +0000 (17:32 +0000)]
Allow relatime to update atime once a day

Allow atime to be updated once per day even with relatime. This lets
utilities like tmpreaper (which delete files based on last access time)
continue working, making relatime a plausible default for distributions.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Acked-by: Valerie Aurora Henson <vaurora@redhat.com>
Acked-by: Alan Cox <alan@redhat.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoide: use try_to_identify() in ide_driveid_update()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:59 +0000 (23:22 +0100)]
ide: use try_to_identify() in ide_driveid_update()

* Pass pointer to buffer for IDENTIFY data to do_identify()
  and try_to_identify().

* Un-static try_to_identify() and use it in ide_driveid_update().

* Rename try_to_identify() to ide_dev_read_id().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: clear drive IRQ after re-enabling local IRQs in ide_driveid_update()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:58 +0000 (23:22 +0100)]
ide: clear drive IRQ after re-enabling local IRQs in ide_driveid_update()

Clear drive IRQ after re-enabling local IRQs in ide_driveid_update()
to match try_to_identify().

Also remove superfluous local_irq_enable() call while at it.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: sanitize SELECT_MASK() usage in ide_driveid_update()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:58 +0000 (23:22 +0100)]
ide: sanitize SELECT_MASK() usage in ide_driveid_update()

Call SELECT_MASK() after ide_fix_driveid().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: classify device type in do_probe()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:58 +0000 (23:22 +0100)]
ide: classify device type in do_probe()

Defer classifying device type from do_identify() to do_probe().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: remove broken EXABYTENEST support
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:58 +0000 (23:22 +0100)]
ide: remove broken EXABYTENEST support

do_identify() marks EXABYTENEST device as non-present and frees
drive->id so enable_nest() has absolutely no chance of working.

The code was like this since at least 2.6.12-rc2 and nobody
has noticed so just remove broken EXABYTENEST support.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: shorten timeout value in ide_driveid_update()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:57 +0000 (23:22 +0100)]
ide: shorten timeout value in ide_driveid_update()

Shorten timeout value in ide_driveid_update() (30s -> 15s)
to match try_to_identify().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: propagate AltStatus workarounds to ide_driveid_update()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:55 +0000 (23:22 +0100)]
ide: propagate AltStatus workarounds to ide_driveid_update()

Propagate AltStatus workarounds from try_to_identify()
to ide_driveid_update().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: fix kmalloc() failure handling in ide_driveid_update()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:54 +0000 (23:22 +0100)]
ide: fix kmalloc() failure handling in ide_driveid_update()

* Doing kmalloc() in the middle of command execution is not only ugly
  but leaves drive waiting to send data on kmalloc() failure.  Fix it.

While at it:

* Unify error code paths.

* Fixup error message to be more useful and add missing KERN_ERR level.

* Rename 'stat' variable to 's'.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agomn10300: remove <asm/ide.h>
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:54 +0000 (23:22 +0100)]
mn10300: remove <asm/ide.h>

* Remove superfluous <asm/intctl-regs.h> include.

* Remove no longer used SUPPORT_SLOW_DATA_PORTS define.

* Move defining SUPPORT_VLB_SYNC to <linux/ide.h>.

* Use __ide_mm_*() macros from <asm-generic/ide_iops.h>
  (MN10300 uses only memory-mapped I/O).

* Remove <asm/ide.h>.

While at it:

* Remove superfluous SPARC64 #ifdef from <linux/ide.h>.

Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agofrv: remove <asm/ide.h>
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:54 +0000 (23:22 +0100)]
frv: remove <asm/ide.h>

* Remove superfluous <asm/{setup,io,irq}.h> includes.

* Remove <asm/ide.h>.

Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: remove pciirq argument from ide_pci_setup_ports()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:53 +0000 (23:22 +0100)]
ide: remove pciirq argument from ide_pci_setup_ports()

* Set ->irq explicitly in cs5520.c.

* Remove irq argument from ide_hw_configure().

* Remove pciirq argument from ide_pci_setup_ports().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: fix ->init_chipset method to return 'int' value
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:53 +0000 (23:22 +0100)]
ide: fix ->init_chipset method to return 'int' value

* Return 0 instead of dev->irq in ->init_chipset implementations.

* Fix ->init_chipset method to return 'int' value instead of
  'unsigned int' one.

This fixes ->init_chipset handling for host drivers (cs5530, hpt366
and pdc202xx_new) for which it is possible for this method to fail.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: remove try_to_identify() wrapper
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:53 +0000 (23:22 +0100)]
ide: remove try_to_identify() wrapper

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: remove no longer needed IRQ auto-probing from try_to_identify() (v2)
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:53 +0000 (23:22 +0100)]
ide: remove no longer needed IRQ auto-probing from try_to_identify() (v2)

v2:
Update actual_try_to_identify() documentation.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: remove no longer needed IRQ fallback code from hwif_init()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:52 +0000 (23:22 +0100)]
ide: remove no longer needed IRQ fallback code from hwif_init()

Then remove no longer used __ide_default_irq().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoamd74xx: remove no longer needed ->init_hwif method
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:52 +0000 (23:22 +0100)]
amd74xx: remove no longer needed ->init_hwif method

This is now handled by core IDE PCI code.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: remove no longer needed IDE_HFLAG[_FORCE]_LEGACY_IRQS
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:52 +0000 (23:22 +0100)]
ide: remove no longer needed IDE_HFLAG[_FORCE]_LEGACY_IRQS

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: use ide_pci_is_in_compatibility_mode() in ide_pci_init_{one,two}()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:51 +0000 (23:22 +0100)]
ide: use ide_pci_is_in_compatibility_mode() in ide_pci_init_{one,two}()

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: use pci_get_legacy_ide_irq() in ide_pci_init_{one,two}()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:49 +0000 (23:22 +0100)]
ide: use pci_get_legacy_ide_irq() in ide_pci_init_{one,two}()

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: handle IDE_HFLAG[_FORCE]_LEGACY_IRQS in ide_pci_init_{one,two}()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:49 +0000 (23:22 +0100)]
ide: handle IDE_HFLAG[_FORCE]_LEGACY_IRQS in ide_pci_init_{one,two}()

Move handling of IDE_HFLAG[_FORCE]_LEGACY_IRQS from ide_init_port()
to ide_pci_init_{one,two}().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agotrm290: small ->init_hwif cleanup
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:49 +0000 (23:22 +0100)]
trm290: small ->init_hwif cleanup

Core IDE PCI code takes care of assigning hwif->irq for both ports.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agons87415: small ->init_hwif cleanup
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:49 +0000 (23:22 +0100)]
ns87415: small ->init_hwif cleanup

Core IDE PCI code takes care of assigning hwif->irq for both ports.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agons87415: use pci_get_legacy_ide_irq()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:48 +0000 (23:22 +0100)]
ns87415: use pci_get_legacy_ide_irq()

Fix ->init_hwif to use pci_get_legacy_ide_irq() instead of
__ide_default_irq().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoamd74xx: use ide_pci_is_in_compatibility_mode()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:48 +0000 (23:22 +0100)]
amd74xx: use ide_pci_is_in_compatibility_mode()

Fix ->init_hwif to check if IDE PCI controller is in compatibility
mode instead of checking for hwif->irq == 0.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agomn10300: add pci_get_legacy_ide_irq() to <asm/pci.h>
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:48 +0000 (23:22 +0100)]
mn10300: add pci_get_legacy_ide_irq() to <asm/pci.h>

Add missing pci_get_legacy_ide_irq() implementation
before it becomes required by core IDE PCI code.

Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: move error handling code to ide-eh.c (v2)
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:47 +0000 (23:22 +0100)]
ide: move error handling code to ide-eh.c (v2)

Do some CodingStyle fixups in <linux/ide.h> while at it.

v2:
Add missing <linux/delay.h> include (reported by Stephen Rothwell).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: checkpatch.pl fixes for ide-iops.c
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:47 +0000 (23:22 +0100)]
ide: checkpatch.pl fixes for ide-iops.c

Fix following checkpatch.pl warnings/errors:
- WARNING: space prohibited between function name and open parenthesis '('
- WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable
- WARNING: line over 80 characters
- ERROR: trailing whitespace
- ERROR: space required before the open parenthesis '('

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: fix comments in ide_config_drive_speed()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:47 +0000 (23:22 +0100)]
ide: fix comments in ide_config_drive_speed()

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: fix printk() levels in [atapi_]reset_pollfunc()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:47 +0000 (23:22 +0100)]
ide: fix printk() levels in [atapi_]reset_pollfunc()

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: move standard I/O code to ide-io-std.c
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:46 +0000 (23:22 +0100)]
ide: move standard I/O code to ide-io-std.c

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: move ide_read_bcount_and_ireason() to ide-atapi.c
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:46 +0000 (23:22 +0100)]
ide: move ide_read_bcount_and_ireason() to ide-atapi.c

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: move xfer mode tuning code to ide-xfer-mode.c
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:46 +0000 (23:22 +0100)]
ide: move xfer mode tuning code to ide-xfer-mode.c

* Move xfer mode tuning code to ide-xfer-mode.c.

* Add CONFIG_IDE_XFER_MODE config option to be selected by host drivers
  that support xfer mode tuning.

* Add CONFIG_IDE_XFER_MODE=n static inline versions of ide_set_pio()
  and ide_set_xfer_rate().

* Make IDE_TIMINGS and BLK_DEV_IDEDMA config options select IDE_XFER_MODE,
  also add explicit selects for few host drivers that need it.

* Build/link ide-xfer-mode.o and ide-pio-blacklist.o (it is needed only
  by ide-xfer-mode.o) only if CONFIG_IDE_XFER_MODE=y.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: move device settings code to ide-devsets.c
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:44 +0000 (23:22 +0100)]
ide: move device settings code to ide-devsets.c

Remove stale comment from ide.c while at it.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: move ide_do_park_unpark() to ide-park.c
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:44 +0000 (23:22 +0100)]
ide: move ide_do_park_unpark() to ide-park.c

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: factor out processing of special commands from ide_special_rq()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:44 +0000 (23:22 +0100)]
ide: factor out processing of special commands from ide_special_rq()

Factor out processing of special commands from ide_special_rq()
to ide_do_devset() and ide_do_park_unpark().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: remove ide_do_drive_cmd()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:44 +0000 (23:22 +0100)]
ide: remove ide_do_drive_cmd()

* Use elv_add_request() instead of __elv_add_request() in ide_do_drive_cmd().

* ide_do_drive_cmd() is used only in ide-{atapi,cd}.c so inline it there.

There should be no functional changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: move ide_dma_timeout_retry() to ide-dma.c
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:43 +0000 (23:22 +0100)]
ide: move ide_dma_timeout_retry() to ide-dma.c

Move ide_dma_timeout_retry() to ide-dma.c and add static inline
version for CONFIG_BLK_DEV_IDEDMA=n.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: move drive_is_ready() to ide-io.c
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:43 +0000 (23:22 +0100)]
ide: move drive_is_ready() to ide-io.c

Move drive_is_ready() to ide-io.c, then make it static.

Also make some minor CodingStyle fixups while at it.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: unexport ide_devset_execute()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:43 +0000 (23:22 +0100)]
ide: unexport ide_devset_execute()

There are no modular ide_devset_execute() users left so unexport it.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: remove stale comments from drive_is_ready()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:42 +0000 (23:22 +0100)]
ide: remove stale comments from drive_is_ready()

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide-acpi: remove taskfile_load_raw()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:42 +0000 (23:22 +0100)]
ide-acpi: remove taskfile_load_raw()

* taskfile_load_raw() is used only by do_drive_set_taskfiles()
  so inline it there.

While at it:
- rename 'args' variable to 'task'
- remove struct taskfile_array
- do ide_acpigtf check early
- use REGS_PER_GTF

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide-acpi: cleanup do_drive_set_taskfiles()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:42 +0000 (23:22 +0100)]
ide-acpi: cleanup do_drive_set_taskfiles()

* ide_noacpi is already checked by ide_acpi_exec_tfs()
  which is the only user of do_drive_set_taskfiles().

* ide_acpi_exec_tfs() prints sufficient debug info about the
  device so no need to do it again.

* do_drive_get_GTF() + ide_acpi_exec_tfs() make sure that this
  function will never be called with incorrect gtf_length argument
  or if device is not present.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide-acpi: cleanup do_drive_get_GTF()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:42 +0000 (23:22 +0100)]
ide-acpi: cleanup do_drive_get_GTF()

* ide_noacpi is already checked by ide_acpi_exec_tfs()
  which is the only user of do_drive_get_GTF().

* ide_acpi_exec_tfs() prints sufficient debug info about the
  device so no need to have excessive data about port/host.

* It is sufficient to check for drive->acpidata->obj_handle
  as it will be NULL if dev == NULL or hwif->acpidata == NULL
  or device is not present.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: sanitize ACPI initialization
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:41 +0000 (23:22 +0100)]
ide: sanitize ACPI initialization

* ide_acpi_init() -> ide_acpi_init_port()

* ide_acpi_blacklist() -> ide_acpi_init()

* Call ide_acpi_init() only once (do it during IDE core
  initialization) and cleanup the function accordingly.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: add ide_for_each_present_dev() iterator
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:41 +0000 (23:22 +0100)]
ide: add ide_for_each_present_dev() iterator

* Add ide_for_each_present_dev() iterator and convert IDE code to use it.

* Do some drive-by CodingStyle fixups in ide-acpi.c while at it.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide-acpi: init ACPI handles early for devices
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:41 +0000 (23:22 +0100)]
ide-acpi: init ACPI handles early for devices

Init ACPI handles for devices in ide_acpi_port_init_devices()
and remove no longer needed ide_acpi_drive_get_handle().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide-acpi: no need to zero ->acpidata for devices
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:41 +0000 (23:22 +0100)]
ide-acpi: no need to zero ->acpidata for devices

ide_acpi_init() takes care of it.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: remove superfluous check from ide_proc_port_register_devices()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:40 +0000 (23:22 +0100)]
ide: remove superfluous check from ide_proc_port_register_devices()

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: init_irq() doesn't need to hold ide_cfg_mtx
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:39 +0000 (23:22 +0100)]
ide: init_irq() doesn't need to hold ide_cfg_mtx

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: move ->lock and ->timer init from init_irq() to ide_init_port_data()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:39 +0000 (23:22 +0100)]
ide: move ->lock and ->timer init from init_irq() to ide_init_port_data()

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: no need to touch local IRQs in ide_probe_port()
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:39 +0000 (23:22 +0100)]
ide: no need to touch local IRQs in ide_probe_port()

Remove superfluous

local_save_flags()
local_irq_enable_in_hardirq()

...

local_irq_restore()

combo.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: move ide_pktcmd_tf_load() to ide-atapi.c
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:39 +0000 (23:22 +0100)]
ide: move ide_pktcmd_tf_load() to ide-atapi.c

Then make it static and remove 'dma' argument.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoide: fix IDE_DFLAG_NO_IO_32BIT handling
Bartlomiej Zolnierkiewicz [Tue, 24 Mar 2009 22:22:38 +0000 (23:22 +0100)]
ide: fix IDE_DFLAG_NO_IO_32BIT handling

* IDE_DFLAG_NO_IO_32BIT may be set by cmd640's ->init_dev method
  so don't clear it in ide_port_tune_devices() (+ no need to do it).

* Move IDE_DFLAG_NO_IO_32BIT handling to ide_port_init_devices().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
15 years agoGFS2: Fix freeze issue
Steven Whitehouse [Mon, 23 Mar 2009 11:38:55 +0000 (11:38 +0000)]
GFS2: Fix freeze issue

This removes some old code that was causing issues during
filesystem freeze.

Reported-by: Andrew Price <andy@andrewprice.me.uk>
Tested-by: Andrew Price <andy@andrewprice.me.uk>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoFix a minor bug in the previous patch
Steven Whitehouse [Thu, 19 Mar 2009 13:15:44 +0000 (13:15 +0000)]
Fix a minor bug in the previous patch

The logic requires that we mark the glock dirty in page_mkwrite
otherwise we might not flush correctly in the case that no
allocation was required in the process of dirying the page.
Also we need to set the shared write flag early for the same
reason.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Clean up of glops.c
Steven Whitehouse [Mon, 9 Mar 2009 09:03:51 +0000 (09:03 +0000)]
GFS2: Clean up of glops.c

This cleans up a number of bits of code mostly based in glops.c.
A couple of simple functions have been merged into the callers
to make it more obvious what is going on, the mysterious raising
of i_writecount around the truncate_inode_pages() call has been
removed. The meta_go_* operations have been renamed rgrp_go_*
since that is the only lock type that they are used with.

The unused argument of gfs2_read_sb has been removed. Also
a bug has been fixed where a check for the rindex inode was
in the wrong callback. More comments are added, and the
debugging code is improved too.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Fix locking bug in failed shared to exclusive conversion
Benjamin Marzinski [Fri, 6 Mar 2009 16:03:20 +0000 (10:03 -0600)]
GFS2: Fix locking bug in failed shared to exclusive conversion

After calling out to the dlm, GFS2 sets the new state of a glock to
gl_target in gdlm_ast().  However, gl_target is not always the lock
state that was requested. If a conversion from shared to exclusive
fails, finish_xmote() will call do_xmote() with LM_ST_UNLOCKED, instead
of gl->gl_target, so that it can reacquire the lock in exlusive the next
time around.  In this case, setting the lock to gl_target in gdlm_ast()
will make GFS2 think that it has the glock in exclusive mode, when
really, it doesn't have the glock locked at all.  This patch adds a new
field to the gfs2_glock structure, gl_req, to track the mode that was
requested.

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Pagecache usage optimization on GFS2
Hisashi Hifumi [Tue, 3 Mar 2009 02:45:20 +0000 (11:45 +0900)]
GFS2: Pagecache usage optimization on GFS2

I introduced "is_partially_uptodate" aops for GFS2.

A page can have multiple buffers and even if a page is not uptodate, some buffers
can be uptodate on pagesize != blocksize environment.
This aops checks that all buffers which correspond to a part of a file
that we want to read are uptodate. If so, we do not have to issue actual
read IO to HDD even if a page is not uptodate because the portion we
want to read are uptodate.
"block_is_partially_uptodate" function is already used by ext2/3/4.
With the following patch random read/write mixed workloads or random read after
random write workloads can be optimized and we can get performance improvement.

I did a performance test using the sysbench.

#sysbench --num-threads=16 --max-requests=200000 --test=fileio --file-num=1
--file-block-size=8K --file-total-size=2G --file-test-mode=rndrw --file-fsync-freq=0
--file-rw-ratio=1 run

-2.6.29-rc6
Test execution summary:
    total time:                          202.6389s
    total number of events:              200000
    total time taken by event execution: 2580.0480
    per-request statistics:
         min:                            0.0000s
         avg:                            0.0129s
         max:                            49.5852s
         approx.  95 percentile:         0.0462s

-2.6.29-rc6-patched
Test execution summary:
    total time:                          177.8639s
    total number of events:              200000
    total time taken by event execution: 2419.0199
    per-request statistics:
         min:                            0.0000s
         avg:                            0.0121s
         max:                            52.4306s
         approx.  95 percentile:         0.0444s

arch: ia64
pagesize: 16k
blocksize: 4k

Signed-off-by: Hisashi Hifumi <hifumi.hisashi@oss.ntt.co.jp>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: fix sparse warning: Should it be static?
Hannes Eder [Sat, 21 Feb 2009 01:12:05 +0000 (02:12 +0100)]
GFS2: fix sparse warning: Should it be static?

Impact: Make symbol static.

Fix this sparse warning:
  fs/gfs2/rgrp.c:188:5: warning: symbol 'gfs2_bitfit' was not declared. Should it be static?

Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: fix sparse warnings: constant is so big it is ...
Hannes Eder [Sat, 21 Feb 2009 01:11:42 +0000 (02:11 +0100)]
GFS2: fix sparse warnings: constant is so big it is ...

Fix this sparse warnings:
  fs/gfs2/rgrp.c:156:23: warning: constant 0xffffffffffffffff is so big it is unsigned long long
  fs/gfs2/rgrp.c:157:23: warning: constant 0xaaaaaaaaaaaaaaaa is so big it is unsigned long long
  fs/gfs2/rgrp.c:158:23: warning: constant 0x5555555555555555 is so big it is long long
  fs/gfs2/rgrp.c:194:20: warning: constant 0x5555555555555555 is so big it is long long
  fs/gfs2/rgrp.c:204:44: warning: constant 0x5555555555555555 is so big it is long long

Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Support quota/noquota mount arguments
Steven Whitehouse [Thu, 19 Feb 2009 10:32:35 +0000 (10:32 +0000)]
GFS2: Support quota/noquota mount arguments

This adds support for "quota" and "noquota" mount options in addition to the
existing "quota=on/off/account" so that we are compatible with the names by
which these options are more generally known.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Fix alignment issue and tidy gfs2_bitfit
Steven Whitehouse [Tue, 17 Feb 2009 14:13:35 +0000 (14:13 +0000)]
GFS2: Fix alignment issue and tidy gfs2_bitfit

An alignment issue with the existing bitfit algorithm was reported
on IA64. This patch attempts to fix that, and also to tidy up the
code a bit. There is now more documentation about how this works
and it has survived a number of different tests.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Add a "demote a glock" interface to sysfs
Steven Whitehouse [Thu, 12 Feb 2009 13:31:58 +0000 (13:31 +0000)]
GFS2: Add a "demote a glock" interface to sysfs

This adds a sysfs file called demote_rq to GFS2's
per filesystem directory. Its possible to use this
file to demote arbitrary glocks in exactly the same
way as if a request had come in from a remote node.

This is intended for testing issues relating to caching
of data under glocks. Despite that, the interface is
generic enough to send requests to any type of glock,
but be careful as its not always safe to send an
arbitrary message to an arbitrary glock. For that reason
and to prevent DoS, this interface is restricted to root
only.

The messages look like this:

<type>:<glocknumber> <mode>

Example:

echo -n "2:13324 EX" >/sys/fs/gfs2/unity:myfs/demote_rq

Which means "please demote inode glock (type 2) number 13324 so that
I can get an EX (exclusive) lock". The lock modes are those which
would normally be sent by a remote node in its callback so if you
want to unlock a glock, you use EX, to demote to shared, use SH or PR
(depending on whether you like GFS2 or DLM lock modes better!).

If the glock doesn't exist, you'll get -ENOENT returned. If the
arguments don't make sense, you'll get -EINVAL returned.

The plan is that this interface will be used in combination with
the blktrace patch which I recently posted for comments although
it is, of course, still useful in its own right.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Expose UUID via sysfs/uevent
Steven Whitehouse [Tue, 10 Feb 2009 13:48:30 +0000 (13:48 +0000)]
GFS2: Expose UUID via sysfs/uevent

Since we have a UUID, we ought to expose it to the user via sysfs
and uevents. We already have the fs name in both of these places
(a combination of the lock proto and lock table name) so if we add
the UUID as well, we have a full set.

For older filesystems (i.e. those created before mkfs.gfs2 was writing
UUIDs by default) the sysfs file will appear zero length, and no UUID
env var will be added to the uevents.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Support generation of discard requests
Steven Whitehouse [Mon, 9 Feb 2009 09:25:01 +0000 (09:25 +0000)]
GFS2: Support generation of discard requests

This patch allows GFS2 to generate discard requests for blocks which are
no longer useful to the filesystem (i.e. those which have been freed as
the result of an unlink operation). The requests are generated at the
time which those blocks become available for reuse in the filesystem.

In order to use this new feature, you have to specify the "discard"
mount option. The code coalesces adjacent blocks into a single extent
when generating the discard requests, thus generating the minimum
number.

If an error occurs when the request has been sent to the block device,
then it will print a message and turn off the requests for that
filesystem. If the problem is temporary, then you can use remount to
turn the option back on again. There is also a nodiscard mount option
so that you can use remount to turn discard requests off, if required.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Fix deadlock on journal flush
Steven Whitehouse [Thu, 5 Feb 2009 10:12:38 +0000 (10:12 +0000)]
GFS2: Fix deadlock on journal flush

This patch fixes a deadlock when the journal is flushed and there
are dirty inodes other than the one which caused the journal flush.
Originally the journal flushing code was trying to obtain the
transaction glock while running the flush code for an inode glock.
We no longer require the transaction glock at this point in time
since we know that any attempt to get the transaction glock from
another node will result in a journal flush. So if we are flushing
the journal, we can be sure that the transaction lock is still
cached from when the transaction was started.

By inlining a version of gfs2_trans_begin() (minus the bit which
gets the transaction glock) we can avoid the deadlock problems
caused if there is a demote request queued up on the transaction
glock.

In addition I've also moved the umount rwsem so that it covers
the glock workqueue, since it all demotions are done by this
workqueue now. That fixes a bug on umount which I came across
while fixing the original problem.

Reported-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Fix error path ref counting for root inode
Steven Whitehouse [Tue, 20 Jan 2009 16:39:23 +0000 (16:39 +0000)]
GFS2: Fix error path ref counting for root inode

We were keeping hold of an extra ref to the root inode in one
of the error paths, that resulted in a hang.

Reported-by: Nate Straz <nstraz@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Tested-by: Robert Peterson <rpeterso@redhat.com>
15 years agoGFS2: Remove unused field from glock
Steven Whitehouse [Tue, 13 Jan 2009 09:53:43 +0000 (09:53 +0000)]
GFS2: Remove unused field from glock

The time stamp field is unused in the glock now that we are
using a shrinker, so that we can remove it and save sizeof(unsigned long)
bytes in each glock.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Merge lock_dlm module into GFS2
Steven Whitehouse [Mon, 12 Jan 2009 10:43:39 +0000 (10:43 +0000)]
GFS2: Merge lock_dlm module into GFS2

This is the big patch that I've been working on for some time
now. There are many reasons for wanting to make this change
such as:
 o Reducing overhead by eliminating duplicated fields between structures
 o Simplifcation of the code (reduces the code size by a fair bit)
 o The locking interface is now the DLM interface itself as proposed
   some time ago.
 o Fewer lookups of glocks when processing replies from the DLM
 o Fewer memory allocations/deallocations for each glock
 o Scope to do further optimisations in the future (but this patch is
   more than big enough for now!)

Please note that (a) this patch relates to the lock_dlm module and
not the DLM itself, that is still a separate module; and (b) that
we retain the ability to build GFS2 as a standalone single node
filesystem with out requiring the DLM.

This patch needs a lot of testing, hence my keeping it I restarted
my -git tree after the last merge window. That way, this has the maximum
exposure before its merged. This is (modulo a few minor bug fixes) the
same patch that I've been posting on and off the the last three months
and its passed a number of different tests so far.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Remove "double" locking in quota
Steven Whitehouse [Thu, 8 Jan 2009 14:28:42 +0000 (14:28 +0000)]
GFS2: Remove "double" locking in quota

We only really need a single spin lock for the quota data, so
lets just use the lru lock for now.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Cc: Abhijith Das <adas@redhat.com>
15 years agoGFS2: change gfs2_quota_scan into a shrinker
Abhijith Das [Wed, 7 Jan 2009 22:03:37 +0000 (16:03 -0600)]
GFS2: change gfs2_quota_scan into a shrinker

Deallocation of gfs2_quota_data objects now happens on-demand through a
shrinker instead of routinely deallocating through the quotad daemon.

Signed-off-by: Abhijith Das <adas@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Bring back lvb-related stuff to lock_nolock to support quotas
Abhijith Das [Wed, 7 Jan 2009 16:21:34 +0000 (10:21 -0600)]
GFS2: Bring back lvb-related stuff to lock_nolock to support quotas

The quota code uses lvbs and this is currently not implemented in
lock_nolock, thereby causing panics when quota is enabled with
lock_nolock. This patch adds the relevant bits.

Signed-off-by: Abhijith Das <adas@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoGFS2: Fix remount argument parsing
Steven Whitehouse [Tue, 6 Jan 2009 11:52:25 +0000 (11:52 +0000)]
GFS2: Fix remount argument parsing

The following patch fixes an issue relating to remount and argument
parsing. After this fix is applied, remount becomes atomic in that
it either succeeds changing the mount to the new state, or it fails
and leaves it in the old state. Previously it was possible for the
parsing of options to fail part way though and for the fs to be left
in a state where some of the new arguments had been applied, but some
had not.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
15 years agoavr32: remove duplicated #include
Huang Weiyi [Sat, 21 Mar 2009 05:50:58 +0000 (13:50 +0800)]
avr32: remove duplicated #include

Remove duplicated #include in arch/avr32/boards/hammerhead/flash.c.

Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Acked-by: Alex Raimondi <mailinglist@miromico.ch>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
15 years agoMerge branch 'master' into next
James Morris [Mon, 23 Mar 2009 23:52:46 +0000 (10:52 +1100)]
Merge branch 'master' into next

15 years agoMerge branch 'topic/usb-caiaq' into for-linus
Takashi Iwai [Mon, 23 Mar 2009 23:36:23 +0000 (00:36 +0100)]
Merge branch 'topic/usb-caiaq' into for-linus

15 years agoMerge branch 'topic/usb-audio' into for-linus
Takashi Iwai [Mon, 23 Mar 2009 23:36:22 +0000 (00:36 +0100)]
Merge branch 'topic/usb-audio' into for-linus

15 years agoMerge branch 'topic/sscape-fix' into for-linus
Takashi Iwai [Mon, 23 Mar 2009 23:36:21 +0000 (00:36 +0100)]
Merge branch 'topic/sscape-fix' into for-linus

15 years agoMerge branch 'topic/powermac' into for-linus
Takashi Iwai [Mon, 23 Mar 2009 23:36:20 +0000 (00:36 +0100)]
Merge branch 'topic/powermac' into for-linus

15 years agoMerge branch 'topic/pcxhr' into for-linus
Takashi Iwai [Mon, 23 Mar 2009 23:36:19 +0000 (00:36 +0100)]
Merge branch 'topic/pcxhr' into for-linus

15 years agoMerge branch 'topic/oxygen' into for-linus
Takashi Iwai [Mon, 23 Mar 2009 23:36:17 +0000 (00:36 +0100)]
Merge branch 'topic/oxygen' into for-linus

15 years agoMerge branch 'topic/oss-fix' into for-linus
Takashi Iwai [Mon, 23 Mar 2009 23:36:16 +0000 (00:36 +0100)]
Merge branch 'topic/oss-fix' into for-linus

15 years agoMerge branch 'topic/msnd' into for-linus
Takashi Iwai [Mon, 23 Mar 2009 23:36:15 +0000 (00:36 +0100)]
Merge branch 'topic/msnd' into for-linus

15 years agoMerge branch 'topic/isa-misc' into for-linus
Takashi Iwai [Mon, 23 Mar 2009 23:36:13 +0000 (00:36 +0100)]
Merge branch 'topic/isa-misc' into for-linus

15 years agoMerge branch 'topic/intel8x0' into for-linus
Takashi Iwai [Mon, 23 Mar 2009 23:36:13 +0000 (00:36 +0100)]
Merge branch 'topic/intel8x0' into for-linus

15 years agoMerge branch 'topic/ice' into for-linus
Takashi Iwai [Mon, 23 Mar 2009 23:36:12 +0000 (00:36 +0100)]
Merge branch 'topic/ice' into for-linus

15 years agoMerge branch 'topic/hdsp' into for-linus
Takashi Iwai [Mon, 23 Mar 2009 23:36:10 +0000 (00:36 +0100)]
Merge branch 'topic/hdsp' into for-linus