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  1. 19 Sep, 2012 34 commits
  3. 12 Sep, 2012 6 commits
    • Ben Hutchings's avatar
      Linux 3.2.29 · 21094cfa
      Ben Hutchings authored
      21094cfa
    • Satoru Moriya's avatar
      mm: avoid swapping out with swappiness==0 · a65afe79
      Satoru Moriya authored 
      commit fe35004f upstream.

Sometimes we'd like to avoid swapping out anonymous memory.  In
particular, avoid swapping out pages of important process or process
groups while there is a reasonable amount of pagecache on RAM so that we
can satisfy our customers' requirements.

OTOH, we can control how aggressive the kernel will swap memory pages with
/proc/sys/vm/swappiness for global and
/sys/fs/cgroup/memory/memory.swappiness for each memcg.

But with current reclaim implementation, the kernel may swap out even if
we set swappiness=0 and there is pagecache in RAM.

This patch changes the behavior with swappiness==0.  If we set
swappiness==0, the kernel does not swap out completely (for global reclaim
until the amount of free pages and filebacked pages in a zone has been
reduced to something very very small (nr_free + nr_filebacked < high
watermark)).
Signed-off-by: default avatarSatoru Moriya <satoru.moriya@hds.com>
Acked-by: default avatarMinchan Kim <minchan@kernel.org>
Reviewed-by: default avatarRik van Riel <riel@redhat.com>
Acked-by: default avatarJerome Marchand <jmarchan@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
[bwh: Backported to 3.2:
 - Adjust context
 - vmscan_swappiness() does not have a zone parameter]
Signed-off-by: default avatarBen Hutchings <ben@decadent.org.uk>
      a65afe79
    • Phillip Lougher's avatar
      Squashfs: fix mount time sanity check for corrupted superblock · 4bddad58
      Phillip Lougher authored 
      commit cc37f75a upstream.

A Squashfs filesystem containing nothing but an empty directory,
although unusual and ultimately pointless, is still valid.

The directory_table >= next_table sanity check rejects these
filesystems as invalid because the directory_table is empty and
equal to next_table.
Signed-off-by: default avatarPhillip Lougher <phillip@squashfs.org.uk>
Signed-off-by: default avatarBen Hutchings <ben@decadent.org.uk>
      4bddad58
    • AceLan Kao's avatar
      asus-nb-wmi: add some video toggle keys · b64c7d34
      AceLan Kao authored 
      commit 3766054f upstream.

There are some new video switch keys that used by newer machines.
0xA0 - SDSP HDMI only
0xA1 - SDSP LCD + HDMI
0xA2 - SDSP CRT + HDMI
0xA3 - SDSP TV + HDMI
But in Linux, there is no suitable userspace application to handle this,
so, mapping them all to KEY_SWITCHVIDEOMODE.
Signed-off-by: default avatarAceLan Kao <acelan.kao@canonical.com>
Signed-off-by: default avatarMatthew Garrett <mjg@redhat.com>
Signed-off-by: default avatarBen Hutchings <ben@decadent.org.uk>
      b64c7d34
    • Trond Myklebust's avatar
      NFS: Fix Oopses in nfs_lookup_revalidate and nfs4_lookup_revalidate · 2a53885e
      Trond Myklebust authored 
      Fix the following Oops in 3.5.1:

 BUG: unable to handle kernel NULL pointer dereference at 0000000000000038
 IP: [<ffffffffa03789cd>] nfs_lookup_revalidate+0x2d/0x480 [nfs]
 PGD 337c63067 PUD 0
 Oops: 0000 [#1] SMP
 CPU 5
 Modules linked in: nfs fscache nfsd lockd nfs_acl auth_rpcgss sunrpc af_packet binfmt_misc cpufreq_conservative cpufreq_userspace cpufreq_powersave dm_mod acpi_cpufreq mperf coretemp gpio_ich kvm_intel joydev kvm ioatdma hid_generic igb lpc_ich i7core_edac edac_core ptp serio_raw dca pcspkr i2c_i801 mfd_core sg pps_core usbhid crc32c_intel microcode button autofs4 uhci_hcd ttm drm_kms_helper drm i2c_algo_bit sysimgblt sysfillrect syscopyarea ehci_hcd usbcore usb_common scsi_dh_rdac scsi_dh_emc scsi_dh_hp_sw scsi_dh_alua scsi_dh edd fan ata_piix thermal processor thermal_sys

 Pid: 30431, comm: java Not tainted 3.5.1-2-default #1 Supermicro X8DTT/X8DTT
 RIP: 0010:[<ffffffffa03789cd>]  [<ffffffffa03789cd>] nfs_lookup_revalidate+0x2d/0x480 [nfs]
 RSP: 0018:ffff8801b418bd38  EFLAGS: 00010292
 RAX: 00000000fffffff6 RBX: ffff88032016d800 RCX: 0000000000000020
 RDX: ffffffff00000000 RSI: 0000000000000000 RDI: ffff8801824a7b00
 RBP: ffff8801b418bdf8 R08: 7fffff0034323030 R09: fffffffff04c03ed
 R10: ffff8801824a7b00 R11: 0000000000000002 R12: ffff8801824a7b00
 R13: ffff8801824a7b00 R14: 0000000000000000 R15: ffff8803201725d0
 FS:  00002b53a46cb700(0000) GS:ffff88033fc20000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 0000000000000038 CR3: 000000020a426000 CR4: 00000000000007e0
 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
 Process java (pid: 30431, threadinfo ffff8801b418a000, task ffff8801b5d20600)
 Stack:
  ffff8801b418be44 ffff88032016d800 ffff8801b418bdf8 0000000000000000
  ffff8801824a7b00 ffff8801b418bdd7 ffff8803201725d0 ffffffff8116a9c0
  ffff8801b5c38dc0 0000000000000007 ffff88032016d800 0000000000000000
 Call Trace:
  [<ffffffff8116a9c0>] lookup_dcache+0x80/0xe0
  [<ffffffff8116aa43>] __lookup_hash+0x23/0x90
  [<ffffffff8116b4a5>] lookup_one_len+0xc5/0x100
  [<ffffffffa03869a3>] nfs_sillyrename+0xe3/0x210 [nfs]
  [<ffffffff8116cadf>] vfs_unlink.part.25+0x7f/0xe0
  [<ffffffff8116f22c>] do_unlinkat+0x1ac/0x1d0
  [<ffffffff815717b9>] system_call_fastpath+0x16/0x1b
  [<00002b5348b5f527>] 0x2b5348b5f526
 Code: ec 38 b8 f6 ff ff ff 4c 89 64 24 18 4c 89 74 24 28 49 89 fc 48 89 5c 24 08 48 89 6c 24 10 49 89 f6 4c 89 6c 24 20 4c 89 7c 24 30 <f6> 46 38 40 0f 85 d1 00 00 00 e8 c4 c4 df e0 48 8b 58 30 49 89
 RIP  [<ffffffffa03789cd>] nfs_lookup_revalidate+0x2d/0x480 [nfs]
  RSP <ffff8801b418bd38>
 CR2: 0000000000000038
 ---[ end trace 845113ed191985dd ]---

This Oops affects 3.5 kernels and older, and is due to lookup_one_len()
calling down to the dentry revalidation code with a NULL pointer
to struct nameidata.

It is fixed upstream by commit 0b728e19 (stop passing nameidata *
to ->d_revalidate())
Reported-by: default avatarRichard Ems <richard.ems@cape-horn-eng.com>
Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: default avatarBen Hutchings <ben@decadent.org.uk>
      2a53885e
    • Christopher Brannon's avatar
      Staging: speakup: fix an improperly-declared variable. · fc1dd47c
      Christopher Brannon authored 
      commit 4ea418b8 upstream.

A local static variable was declared as a pointer to a string
constant.  We're assigning to the underlying memory, so it
needs to be an array instead.
Signed-off-by: default avatarChristopher Brannon <chris@the-brannons.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarBen Hutchings <ben@decadent.org.uk>
      fc1dd47c
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