1. 28 Sep, 2010 1 commit
  2. 27 Sep, 2010 1 commit
  3. 24 Sep, 2010 1 commit
  4. 23 Sep, 2010 2 commits
    • Steven Whitehouse's avatar
      GFS2: Remove localcaching mount option · c2048b00
      Steven Whitehouse authored
      This option defaulted to on for lock_nolock mounts and off
      otherwise. The only function was to avoid the revalidation of
      dentries. In the cluster case, that is entirely pointless and
      liable to cause coherency problems.
      The patch changes the revalidation to depend upon whether the
      fs is a local or cluster fs (i.e. it follows the existing default
      behaviour). I very much doubt anybody ever used this option as
      there is no reason to. Even so we will continue to accept it
      on the mount command line, but ignore it.
      Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
    • Steven Whitehouse's avatar
      GFS2: Remove ignore_local_fs mount argument · f57a024e
      Steven Whitehouse authored
      This is been a no-op for a very long time now. I'm pretty sure
      nobody uses it, but just in case we'll still accept it on the
      command line, but ignore it.
      Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
  5. 20 Sep, 2010 10 commits
    • Steven Whitehouse's avatar
      GFS2: Make . and .. qstrs constant · 8d123585
      Steven Whitehouse authored
      Rather than calculating the qstrs for . and .. each time
      we need them, its better to keep a constant version of
      these and just refer to them when required.
      Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
      Reviewed-by: default avatarChristoph Hellwig <hch@infradead.org>
    • Steven Whitehouse's avatar
      GFS2: Use new workqueue scheme · 9fa0ea9f
      Steven Whitehouse authored
      The recovery workqueue can be freezable since
      we want it to finish what it is doing if the system is to
      be frozen (although why you'd want to freeze a cluster node
      is beyond me since it will result in it being ejected from
      the cluster). It does still make sense for single node
      GFS2 filesystems though.
      The glock workqueue will benefit from being able to run more
      work items concurrently. A test running postmark shows
      improved performance and multi-threaded workloads are likely
      to benefit even more. It needs to be high priority because
      the latency directly affects the latency of filesystem glock
      The delete workqueue is similar to the recovery workqueue in
      that it must not get blocked by memory allocations, and may
      run for a long time.
      Potentially other GFS2 threads might also be converted to
      workqueues, but I'll leave that for a later patch.
      Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
      Acked-by: default avatarTejun Heo <tj@kernel.org>
    • Steven Whitehouse's avatar
      GFS2: Update handling of DLM return codes to match reality · 1fea7c25
      Steven Whitehouse authored
      GFS2's idea of which return codes it needs to handle was based
      upon those listed in dlm.h. Those didn't cover all the possible
      codes and listed some which never happen. This updates GFS2 to
      handle all the codes which can actually be returned from the
      DLM under various circumstances.
      Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
    • Steven Whitehouse's avatar
      GFS2: Don't enforce min hold time when two demotes occur in rapid succession · 7b5e3d5f
      Steven Whitehouse authored
      Due to the design of the VFS, it is quite usual for operations on GFS2
      to consist of a lookup (requiring a shared lock) followed by an
      operation requiring an exclusive lock. If a remote node has cached an
      exclusive lock, then it will receive two demote events in rapid succession
      firstly for a shared lock and then to unlocked. The existing min hold time
      code was triggering in this case, even if the node was otherwise idle
      since the state change time was being updated by the initial demote.
      This patch introduces logic to skip the min hold timer in the case that
      a "double demote" of this kind has occurred. The min hold timer will
      still be used in all other cases.
      A new glock flag is introduced which is used to keep track of whether
      there have been any newly queued holders since the last glock state
      change. The min hold time is only applied if the flag is set.
      Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
      Tested-by: default avatarAbhijith Das <adas@redhat.com>
    • Steven Whitehouse's avatar
      GFS2: Fix whitespace in previous patch · fe08d5a8
      Steven Whitehouse authored
      Removes the offending space
      Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
    • Benjamin Marzinski's avatar
      GFS2: fallocate support · 3921120e
      Benjamin Marzinski authored
      This patch adds support for fallocate to gfs2.  Since the gfs2 does not support
      uninitialized data blocks, it must write out zeros to all the blocks.  However,
      since it does not need to lock any pages to read from, gfs2 can write out the
      zero blocks much more efficiently.  On a moderately full filesystem, fallocate
      works around 5 times faster on average.  The fallocate call also allows gfs2 to
      add blocks to the file without changing the filesize, which will make it
      possible for gfs2 to preallocate space for the rindex file, so that gfs2 can
      grow a completely full filesystem.
      Signed-off-by: default avatarBenjamin Marzinski <bmarzins@redhat.com>
      Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
    • Steven Whitehouse's avatar
      GFS2: Add a bug trap in allocation code · 9a3f236d
      Steven Whitehouse authored
      This adds a check to ensure that if we reach the block allocator
      that we don't try and proceed if there is no alloc structure
      hanging off the inode. This should only happen if there is a bug
      in GFS2. The error return code is distinctive in order that it
      will be easily spotted.
      Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
    • Steven Whitehouse's avatar
      GFS2: No longer experimental · 820969f3
      Steven Whitehouse authored
      I think the time has arrvied to remove the experimental tag
      from GFS2.
      Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
    • Steven Whitehouse's avatar
      GFS2: Remove i_disksize · a2e0f799
      Steven Whitehouse authored
      With the update of the truncate code, ip->i_disksize and
      inode->i_size are merely copies of each other. This means
      we can remove ip->i_disksize and use inode->i_size exclusively
      reducing the size of a GFS2 inode by 8 bytes.
      Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
    • Steven Whitehouse's avatar
      GFS2: New truncate sequence · ff8f33c8
      Steven Whitehouse authored
      This updates GFS2's truncate code to use the new truncate
      sequence correctly. This is a stepping stone to being
      able to remove ip->i_disksize in favour of using i_size
      everywhere now that the two sizes are always identical.
      Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
      Cc: Nick Piggin <npiggin@suse.de>
      Cc: Christoph Hellwig <hch@lst.de>
  6. 19 Sep, 2010 15 commits
    • Linus Torvalds's avatar
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha-2.6 · 2422084a
      Linus Torvalds authored
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha-2.6:
        alpha: deal with multiple simultaneously pending signals
        alpha: fix a 14 years old bug in sigreturn tracing
        alpha: unb0rk sigsuspend() and rt_sigsuspend()
        alpha: belated ERESTART_RESTARTBLOCK race fix
        alpha: Shift perf event pending work earlier in timer interrupt
        alpha: wire up fanotify and prlimit64 syscalls
        alpha: kill big kernel lock
        alpha: fix build breakage in asm/cacheflush.h
        alpha: remove unnecessary cast from void* in assignment.
        alpha: Use static const char * const where possible
    • Linus Torvalds's avatar
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 · 7d7dee96
      Linus Torvalds authored
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (21 commits)
        dca: disable dca on IOAT ver.3.0 multiple-IOH platforms
        netpoll: Disable IRQ around RCU dereference in netpoll_rx
        sctp: Do not reset the packet during sctp_packet_config().
        net/llc: storing negative error codes in unsigned short
        MAINTAINERS: move atlx discussions to netdev
        drivers/net/cxgb3/cxgb3_main.c: prevent reading uninitialized stack memory
        drivers/net/eql.c: prevent reading uninitialized stack memory
        drivers/net/usb/hso.c: prevent reading uninitialized memory
        xfrm: dont assume rcu_read_lock in xfrm_output_one()
        r8169: Handle rxfifo errors on 8168 chips
        3c59x: Remove atomic context inside vortex_{set|get}_wol
        tcp: Prevent overzealous packetization by SWS logic.
        net: RPS needs to depend upon USE_GENERIC_SMP_HELPERS
        phylib: fix PAL state machine restart on resume
        net: use rcu_barrier() in rollback_registered_many
        bonding: correctly process non-linear skbs
        ipv4: enable getsockopt() for IP_NODEFRAG
        ipv4: force_igmp_version ignored when a IGMPv3 query received
        ppp: potential NULL dereference in ppp_mp_explode()
        net/llc: make opt unsigned in llc_ui_setsockopt()
    • Linus Torvalds's avatar
      Merge branch 's5p-fixes-for-linus' of... · f1c9c979
      Linus Torvalds authored
      Merge branch 's5p-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung
      * 's5p-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
        ARM: S3C64XX: Add IORESOURCE_IRQ_HIGHLEVEL flag to dm9000 on mach-real6410
        ARM: S3C64XX: Fix coding style errors on mach-real6410
        ARM: S3C64XX: Prototype SPI devices
        ARM: S3C64XX: Fix dev-spi build
        ARM: SAMSUNG: Fix on s5p_gpio_[get,set]_drvstr
        ARM: SAMSUNG: Fix on drive strength value
        ARM: S5PV210: Add FIMC clocks
        ARM: S5PV210: Reduce the iodesc length of systimer
        ARM: S5PV210: Update I2C-1 Clock Register Property.
        ARM: S5P: Decrease IO Registers memory region size on FIMC
        ARM: S5P: Fix DMA coherent mask for FIMC
    • Jan Harkes's avatar
      Coda: mount hangs because of missed REQ_WRITE rename · 112d421d
      Jan Harkes authored
      Coda's REQ_* defines were renamed to avoid clashes with the block layer
      (commit 4aeefdc6: "coda: fixup clash with block layer REQ_*
      However one was missed and response messages are no longer matched with
      requests and waiting threads are no longer woken up.  This patch fixes
      Signed-off-by: default avatarJan Harkes <jaharkes@cs.cmu.edu>
      [ Also fixed up whitespace while at it  -Linus ]
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Al Viro's avatar
      alpha: deal with multiple simultaneously pending signals · 494486a1
      Al Viro authored
      Unlike the other targets, alpha sets _one_ sigframe and
      buggers off until the next syscall/interrupt, even if
      more signals are pending.  It leads to quite a few unpleasant
      inconsistencies, starting with SIGSEGV potentially arriving
      not where it should and including e.g. mess with sigsuspend();
      consider two pending signals blocked until sigsuspend()
      unblocks them.  We pick the first one; then, if we are hit
      by interrupt while in the handler, we process the second one
      as well.  If we are not, and if no syscalls had been made,
      we get out of the first handler and leave the second signal
      pending; normally sigreturn() would've picked it anyway, but
      here it starts with restoring the original mask and voila -
      the second signal is blocked again.  On everything else we
      get both delivered consistently.
      It's actually easy to fix; the only thing to watch out for
      is prevention of double syscall restart.  Fortunately, the
      idea I've nicked from arm fix by rmk works just fine...
      Testcase demonstrating the behaviour in question; on alpha
      we get one or both flags set (usually one), on everything
      else both are always set.
      	#include <signal.h>
      	#include <stdio.h>
      	int had1, had2;
      	void f1(int sig) { had1 = 1; }
      	void f2(int sig) { had2 = 1; }
      		sigset_t set1, set2;
      		sigaddset(&set2, 1);
      		sigaddset(&set2, 2);
      		signal(1, f1);
      		signal(2, f2);
      		sigprocmask(SIG_SETMASK, &set2, NULL);
      		printf("had1:%d had2:%d\n", had1, had2);
      Tested-by: default avatarMichael Cree <mcree@orcon.net.nz>
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: default avatarMatt Turner <mattst88@gmail.com>
    • Al Viro's avatar
      alpha: fix a 14 years old bug in sigreturn tracing · 53293638
      Al Viro authored
      The way sigreturn() is implemented on alpha breaks PTRACE_SYSCALL,
      all way back to 1.3.95 when alpha has grown PTRACE_SYSCALL support.
      What happens is direct return to ret_from_syscall, in order to bypass
      mangling of a3 (error indicator) and prevent other mutilations of
      registers (e.g. by syscall restart).  That's fine, but... the entire
      TIF_SYSCALL_TRACE codepath is kept separate on alpha and post-syscall
      stopping/notifying the tracer is after the syscall.  And the normal
      path we are forcibly switching to doesn't have it.
      So we end up with *one* stop in traced sigreturn() vs. two in other
      syscalls.  And yes, strace is visibly broken by that; try to strace
      the following
      	#include <signal.h>
      	#include <stdio.h>
      	void f(int sig) {}
      		signal(SIGHUP, f);
      		write(1, "eeeek\n", 6);
      and watch the show.  The
      	close(1)                                = 405
      in the end of strace output is coming from return value of write() (6 ==
      __NR_close on alpha) and syscall number of exit_group() (__NR_exit_group ==
      405 there).
      The fix is fairly simple - the only thing we end up missing is the call
      of syscall_trace() and we can tell whether we'd been called from the
      SYSCALL_TRACE path by checking ra value.  Since we are setting the
      switch_stack up (that's what sys_sigreturn() does), we have the right
      environment for calling syscall_trace() - just before we call
      undo_switch_stack() and return.  Since undo_switch_stack() will overwrite
      s0 anyway, we can use it to store the result of "has it been called from
      SYSCALL_TRACE path?" check.  The same thing applies in rt_sigreturn().
      Tested-by: default avatarMichael Cree <mcree@orcon.net.nz>
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: default avatarMatt Turner <mattst88@gmail.com>
    • Al Viro's avatar
      alpha: unb0rk sigsuspend() and rt_sigsuspend() · 392fb6e3
      Al Viro authored
      Old code used to set regs->r0 and regs->r19 to force the right
      return value.  Leaving that after switch to ERESTARTNOHAND
      was a Bad Idea(tm), since now that screws the restart - if we
      hit the case when get_signal_to_deliver() returns 0, we will
      step back to syscall insn, with v0 set to EINTR and a3 to 1.
      The latter won't matter, since EINTR is 4, aka __NR_write.
      	#include <signal.h>
      	#define _GNU_SOURCE
      	#include <unistd.h>
      	#include <sys/syscall.h>
      		sigset_t mask;
      		sigaddset(&mask, SIGCONT);
      		sigprocmask(SIG_SETMASK, &mask, NULL);
      		kill(0, SIGCONT);
      		syscall(__NR_sigsuspend, 1, "b0rken\n", 7);
      results on alpha in immediate message to stdout...
      Fix is obvious; moreover, since we don't need regs anymore, we can
      switch to normal prototypes for these guys and lose the wrappers.
      Even better, rt_sigsuspend() is identical to generic version in
      kernel/signal.c now.
      Tested-by: default avatarMichael Cree <mcree@orcon.net.nz>
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: default avatarMatt Turner <mattst88@gmail.com>
    • Al Viro's avatar
      alpha: belated ERESTART_RESTARTBLOCK race fix · 2deba1bd
      Al Viro authored
      same thing as had been done on other targets back in 2003 -
      move setting ->restart_block.fn into {rt_,}sigreturn().
      Tested-by: default avatarMichael Cree <mcree@orcon.net.nz>
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      Signed-off-by: default avatarMatt Turner <mattst88@gmail.com>
    • Michael Cree's avatar
      alpha: Shift perf event pending work earlier in timer interrupt · bdc8b891
      Michael Cree authored
      Pending work from the performance event subsystem is executed in
      the timer interrupt.  This patch shifts the call to
      perf_event_do_pending() before the call to update_process_times()
      as the latter may call back into the perf event subsystem and it
      is prudent to have the pending work executed first.
      Signed-off-by: default avatarMichael Cree <mcree@orcon.net.nz>
      Signed-off-by: default avatarMatt Turner <mattst88@gmail.com>
    • Mikael Pettersson's avatar
      alpha: wire up fanotify and prlimit64 syscalls · 531f0474
      Mikael Pettersson authored
      The 2.6.36-rc kernel added three new system calls:
      fanotify_init, fanotify_mark, and prlimit64.  This
      patch wires them up on Alpha.
      Built and booted on an XP900.  Untested beyond that.
      Signed-off-by: default avatarMikael Pettersson <mikpe@it.uu.se>
      Signed-off-by: default avatarMatt Turner <mattst88@gmail.com>
    • Arnd Bergmann's avatar
      alpha: kill big kernel lock · 12e750d9
      Arnd Bergmann authored
      All uses of the BKL on alpha are totally bogus, nothing
      is really protected by this. Remove the remaining users
      so we don't have to mark alpha as 'depends on BKL'.
      Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
      Cc: Richard Henderson <rth@twiddle.net>
      Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
      Cc: linux-alpha@vger.kernel.org
      Signed-off-by: default avatarMatt Turner <mattst88@gmail.com>
    • Tejun Heo's avatar
      alpha: fix build breakage in asm/cacheflush.h · b97f897d
      Tejun Heo authored
      Alpha SMP flush_icache_user_range() is implemented as an inline
      function inside include/asm/cacheflush.h.  It dereferences @current
      but doesn't include linux/sched.h and thus causes build failure if
      linux/sched.h wasn't included previously.  Fix it by including the
      needed header file explicitly.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Reported-by: default avatarStephen Rothwell <sfr@canb.auug.org.au>
      Signed-off-by: default avatarMatt Turner <mattst88@gmail.com>
    • matt mooney's avatar
    • Joe Perches's avatar
  7. 18 Sep, 2010 4 commits
  8. 17 Sep, 2010 6 commits