Skip to content
  1. Feb 07, 2013
  2. Feb 06, 2013
  3. Jan 22, 2013
    • Namjae Jeon's avatar
      udf: add extent cache support in case of file reading · 99600051
      Namjae Jeon authored
      
      
      This patch implements extent caching in case of file reading.
      While reading a file, currently, UDF reads metadata serially
      which takes a lot of time depending on the number of extents present
      in the file. Caching last accessd extent improves metadata read time.
      Instead of reading file metadata from start, now we read from
      the cached extent.
      
      This patch considerably improves the time spent by CPU in kernel mode.
      For example, while reading a 10.9 GB file using dd:
      Time before applying patch:
      11677022208 bytes (10.9GB) copied, 1529.748921 seconds, 7.3MB/s
      real    25m 29.85s
      user    0m 12.41s
      sys     15m 34.75s
      
      Time after applying patch:
      11677022208 bytes (10.9GB) copied, 1469.338231 seconds, 7.6MB/s
      real    24m 29.44s
      user    0m 15.73s
      sys     3m 27.61s
      
      [JK: Fix bh refcounting issues, simplify initialization]
      
      Signed-off-by: default avatarNamjae Jeon <namjae.jeon@samsung.com>
      Signed-off-by: default avatarAshish Sangwan <a.sangwan@samsung.com>
      Signed-off-by: default avatarBonggil Bak <bgbak@samsung.com>
      Signed-off-by: default avatarJan Kara <jack@suse.cz>
      99600051
  4. Jan 21, 2013
  5. Jan 20, 2013
  6. Jan 19, 2013
  7. Jan 18, 2013
    • Linus Torvalds's avatar
      Linux 3.8-rc4 · 7d1f9aef
      Linus Torvalds authored
      7d1f9aef
    • Wolfgang Frisch's avatar
      USB: io_ti: Fix NULL dereference in chase_port() · 1ee0a224
      Wolfgang Frisch authored
      
      
      The tty is NULL when the port is hanging up.
      chase_port() needs to check for this.
      
      This patch is intended for stable series.
      The behavior was observed and tested in Linux 3.2 and 3.7.1.
      
      Johan Hovold submitted a more elaborate patch for the mainline kernel.
      
      [   56.277883] usb 1-1: edge_bulk_in_callback - nonzero read bulk status received: -84
      [   56.278811] usb 1-1: USB disconnect, device number 3
      [   56.278856] usb 1-1: edge_bulk_in_callback - stopping read!
      [   56.279562] BUG: unable to handle kernel NULL pointer dereference at 00000000000001c8
      [   56.280536] IP: [<ffffffff8144e62a>] _raw_spin_lock_irqsave+0x19/0x35
      [   56.281212] PGD 1dc1b067 PUD 1e0f7067 PMD 0
      [   56.282085] Oops: 0002 [#1] SMP
      [   56.282744] Modules linked in:
      [   56.283512] CPU 1
      [   56.283512] Pid: 25, comm: khubd Not tainted 3.7.1 #1 innotek GmbH VirtualBox/VirtualBox
      [   56.283512] RIP: 0010:[<ffffffff8144e62a>]  [<ffffffff8144e62a>] _raw_spin_lock_irqsave+0x19/0x35
      [   56.283512] RSP: 0018:ffff88001fa99ab0  EFLAGS: 00010046
      [   56.283512] RAX: 0000000000000046 RBX: 00000000000001c8 RCX: 0000000000640064
      [   56.283512] RDX: 0000000000010000 RSI: ffff88001fa99b20 RDI: 00000000000001c8
      [   56.283512] RBP: ffff88001fa99b20 R08: 0000000000000000 R09: 0000000000000000
      [   56.283512] R10: 0000000000000000 R11: ffffffff812fcb4c R12: ffff88001ddf53c0
      [   56.283512] R13: 0000000000000000 R14: 00000000000001c8 R15: ffff88001e19b9f4
      [   56.283512] FS:  0000000000000000(0000) GS:ffff88001fd00000(0000) knlGS:0000000000000000
      [   56.283512] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
      [   56.283512] CR2: 00000000000001c8 CR3: 000000001dc51000 CR4: 00000000000006e0
      [   56.283512] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
      [   56.283512] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
      [   56.283512] Process khubd (pid: 25, threadinfo ffff88001fa98000, task ffff88001fa94f80)
      [   56.283512] Stack:
      [   56.283512]  0000000000000046 00000000000001c8 ffffffff810578ec ffffffff812fcb4c
      [   56.283512]  ffff88001e19b980 0000000000002710 ffffffff812ffe81 0000000000000001
      [   56.283512]  ffff88001fa94f80 0000000000000202 ffffffff00000001 0000000000000296
      [   56.283512] Call Trace:
      [   56.283512]  [<ffffffff810578ec>] ? add_wait_queue+0x12/0x3c
      [   56.283512]  [<ffffffff812fcb4c>] ? usb_serial_port_work+0x28/0x28
      [   56.283512]  [<ffffffff812ffe81>] ? chase_port+0x84/0x2d6
      [   56.283512]  [<ffffffff81063f27>] ? try_to_wake_up+0x199/0x199
      [   56.283512]  [<ffffffff81263a5c>] ? tty_ldisc_hangup+0x222/0x298
      [   56.283512]  [<ffffffff81300171>] ? edge_close+0x64/0x129
      [   56.283512]  [<ffffffff810612f7>] ? __wake_up+0x35/0x46
      [   56.283512]  [<ffffffff8106135b>] ? should_resched+0x5/0x23
      [   56.283512]  [<ffffffff81264916>] ? tty_port_shutdown+0x39/0x44
      [   56.283512]  [<ffffffff812fcb4c>] ? usb_serial_port_work+0x28/0x28
      [   56.283512]  [<ffffffff8125d38c>] ? __tty_hangup+0x307/0x351
      [   56.283512]  [<ffffffff812e6ddc>] ? usb_hcd_flush_endpoint+0xde/0xed
      [   56.283512]  [<ffffffff8144e625>] ? _raw_spin_lock_irqsave+0x14/0x35
      [   56.283512]  [<ffffffff812fd361>] ? usb_serial_disconnect+0x57/0xc2
      [   56.283512]  [<ffffffff812ea99b>] ? usb_unbind_interface+0x5c/0x131
      [   56.283512]  [<ffffffff8128d738>] ? __device_release_driver+0x7f/0xd5
      [   56.283512]  [<ffffffff8128d9cd>] ? device_release_driver+0x1a/0x25
      [   56.283512]  [<ffffffff8128d393>] ? bus_remove_device+0xd2/0xe7
      [   56.283512]  [<ffffffff8128b7a3>] ? device_del+0x119/0x167
      [   56.283512]  [<ffffffff812e8d9d>] ? usb_disable_device+0x6a/0x180
      [   56.283512]  [<ffffffff812e2ae0>] ? usb_disconnect+0x81/0xe6
      [   56.283512]  [<ffffffff812e4435>] ? hub_thread+0x577/0xe82
      [   56.283512]  [<ffffffff8144daa7>] ? __schedule+0x490/0x4be
      [   56.283512]  [<ffffffff8105798f>] ? abort_exclusive_wait+0x79/0x79
      [   56.283512]  [<ffffffff812e3ebe>] ? usb_remote_wakeup+0x2f/0x2f
      [   56.283512]  [<ffffffff812e3ebe>] ? usb_remote_wakeup+0x2f/0x2f
      [   56.283512]  [<ffffffff810570b4>] ? kthread+0x81/0x89
      [   56.283512]  [<ffffffff81057033>] ? __kthread_parkme+0x5c/0x5c
      [   56.283512]  [<ffffffff8145387c>] ? ret_from_fork+0x7c/0xb0
      [   56.283512]  [<ffffffff81057033>] ? __kthread_parkme+0x5c/0x5c
      [   56.283512] Code: 8b 7c 24 08 e8 17 0b c3 ff 48 8b 04 24 48 83 c4 10 c3 53 48 89 fb 41 50 e8 e0 0a c3 ff 48 89 04 24 e8 e7 0a c3 ff ba 00 00 01 00
      <f0> 0f c1 13 48 8b 04 24 89 d1 c1 ea 10 66 39 d1 74 07 f3 90 66
      [   56.283512] RIP  [<ffffffff8144e62a>] _raw_spin_lock_irqsave+0x19/0x35
      [   56.283512]  RSP <ffff88001fa99ab0>
      [   56.283512] CR2: 00000000000001c8
      [   56.283512] ---[ end trace 49714df27e1679ce ]---
      
      Signed-off-by: default avatarWolfgang Frisch <wfpub@roembden.net>
      Cc: Johan Hovold <jhovold@gmail.com>
      Cc: stable <stable@vger.kernel.org>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      1ee0a224
    • Bjørn Mork's avatar
      USB: option: add TP-LINK HSUPA Modem MA180 · 99beb2e9
      Bjørn Mork authored
      
      
      The driver description files gives these names to the vendor specific
      functions on this modem:
      
       Diagnostics VID_2357&PID_0201&MI_00
       NMEA        VID_2357&PID_0201&MI_01
       Modem       VID_2357&PID_0201&MI_03
       Networkcard VID_2357&PID_0201&MI_04
      
      Reported-by: default avatarThomas Schäfer <tschaefer@t-online.de>
      Signed-off-by: default avatarBjørn Mork <bjorn@mork.no>
      Cc: stable <stable@vger.kernel.org>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      99beb2e9
    • Bjørn Mork's avatar
      USB: option: blacklist network interface on ONDA MT8205 4G LTE · 2291dff0
      Bjørn Mork authored
      
      
      The driver description files gives these names to the vendor specific
      functions on this modem:
      
       Diag   VID_19D2&PID_0265&MI_00
       NMEA   VID_19D2&PID_0265&MI_01
       AT cmd VID_19D2&PID_0265&MI_02
       Modem  VID_19D2&PID_0265&MI_03
       Net    VID_19D2&PID_0265&MI_04
      
      Signed-off-by: default avatarBjørn Mork <bjorn@mork.no>
      Cc: stable <stable@vger.kernel.org>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      2291dff0
    • Steven Rostedt's avatar
      staging/sb105x: PARPORT config is not good enough must use PARPORT_PC · 7dfc8331
      Steven Rostedt authored
      
      
      The sb105x driver calls parport_pc_probe_port() which isn't defined if
      PARPORT_PC isn't enabled. Protecting it with CONFIG_PARPORT is not good
      enough, must protect it with CONFIG_PARPORT_PC.
      
      Reported-by: default avatarRandy Dunlap <rdunlap@infradead.org>
      Acked-by: default avatarRandy Dunlap <rdunlap@infradead.org>
      Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      7dfc8331
    • Tormod Volden's avatar
      staging: wlan-ng: Fix clamping of returned SSID length · 811a37ef
      Tormod Volden authored
      Commit 2e254212 broke listing of available network names, since it
      clamped the length of the returned SSID to WLAN_BSSID_LEN (6) instead of
      WLAN_SSID_MAXLEN (32).
      
      https://bugzilla.kernel.org/show_bug.cgi?id=52501
      
      
      
      Signed-off-by: default avatarTormod Volden <debian.tormod@gmail.com>
      Cc: stable <stable@vger.kernel.org> # 3.4+
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      811a37ef
    • Greg Kroah-Hartman's avatar
      Merge tag 'iio-fixes-for-3.8b' of... · aec992f2
      Greg Kroah-Hartman authored
      Merge tag 'iio-fixes-for-3.8b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
      
      Jonathan writes:
      
        Second round of fixes for IIO post 3.8-rc1
      
        Two tiny fixes
        * A build warning fix due to signed / unsigned comparison
        * Missing sign extension in adis16080
      aec992f2