1. 04 Jan, 2010 1 commit
  2. 02 Jan, 2010 14 commits
    • Linus Torvalds's avatar
      Merge branch 'reiserfs/kill-bkl' of... · 45d28b09
      Linus Torvalds authored
      Merge branch 'reiserfs/kill-bkl' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing
      
      * 'reiserfs/kill-bkl' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing:
        reiserfs: Safely acquire i_mutex from xattr_rmdir
        reiserfs: Safely acquire i_mutex from reiserfs_for_each_xattr
        reiserfs: Fix journal mutex <-> inode mutex lock inversion
        reiserfs: Fix unwanted recursive reiserfs lock in reiserfs_unlink()
        reiserfs: Relax lock before open xattr dir in reiserfs_xattr_set_handle()
        reiserfs: Relax reiserfs lock while freeing the journal
        reiserfs: Fix reiserfs lock <-> i_mutex dependency inversion on xattr
        reiserfs: Warn on lock relax if taken recursively
        reiserfs: Fix reiserfs lock <-> i_xattr_sem dependency inversion
        reiserfs: Fix remaining in-reclaim-fs <-> reclaim-fs-on locking inversion
        reiserfs: Fix reiserfs lock <-> inode mutex dependency inversion
        reiserfs: Fix reiserfs lock and journal lock inversion dependency
        reiserfs: Fix possible recursive lock
      45d28b09
    • Kusanagi Kouichi's avatar
      Documentation: Rename Documentation/DMA-mapping.txt · 4207a152
      Kusanagi Kouichi authored
      It seems that Documentation/DMA-mapping.txt was supposed to be renamed
      to Documentation/PCI/PCI-DMA-mapping.txt.
      Signed-off-by: default avatarKusanagi Kouichi <[email protected]>
      Signed-off-by: default avatarRandy Dunlap <[email protected]>
      Signed-off-by: default avatarLinus Torvalds <[email protected]>
      4207a152
    • H Hartley Sweeten's avatar
      DocBook: fix ioremap return type · 8d9f99c3
      H Hartley Sweeten authored
      ioremap() returns a void __iomem * not an unsigned long.  Update the
      Documentation file to reflect this.
      Signed-off-by: default avatarH Hartley Sweeten <[email protected]>
      Signed-off-by: default avatarRandy Dunlap <[email protected]>
      Cc: David Woodhouse <[email protected]>
      Signed-off-by: default avatarLinus Torvalds <[email protected]>
      8d9f99c3
    • H Hartley Sweeten's avatar
      Documentation: fix ioremap return type · 143724fd
      H Hartley Sweeten authored
      ioremap() returns a void __iomem * not a char *.  Update the documentation
      file to reflect this.
      Signed-off-by: default avatarH Hartley Sweeten <[email protected]>
      Signed-off-by: default avatarRandy Dunlap <[email protected]>
      Signed-off-by: default avatarLinus Torvalds <[email protected]>
      143724fd
    • Jaswinder Singh Rajput's avatar
      writeback: add missing kernel-doc notation · 4b6764fa
      Jaswinder Singh Rajput authored
      Fix the following htmldocs warning:
      
        Warning(fs/fs-writeback.c:255): No description found for parameter 'sb'
      Signed-off-by: default avatarJaswinder Singh Rajput <[email protected]>
      Signed-off-by: default avatarRandy Dunlap <[email protected]>
      Acked-by: default avatarWu Fengguang <[email protected]>
      Cc: Peter Zijlstra <[email protected]>
      Cc: Jan Kara <[email protected]>
      Cc: Jens Axboe <[email protected]>
      Signed-off-by: default avatarLinus Torvalds <[email protected]>
      4b6764fa
    • Frederic Weisbecker's avatar
      reiserfs: Safely acquire i_mutex from xattr_rmdir · 835d5247
      Frederic Weisbecker authored
      Relax the reiserfs lock before taking the inode mutex from
      xattr_rmdir() to avoid the usual reiserfs lock <-> inode mutex
      bad dependency.
      Signed-off-by: default avatarFrederic Weisbecker <[email protected]>
      Tested-by: default avatarChristian Kujau <[email protected]>
      Cc: Alexander Beregalov <[email protected]>
      Cc: Chris Mason <[email protected]>
      Cc: Ingo Molnar <[email protected]>
      835d5247
    • Frederic Weisbecker's avatar
      reiserfs: Safely acquire i_mutex from reiserfs_for_each_xattr · 8b513f56
      Frederic Weisbecker authored
      Relax the reiserfs lock before taking the inode mutex from
      reiserfs_for_each_xattr() to avoid the usual bad dependencies:
      
      =======================================================
      [ INFO: possible circular locking dependency detected ]
      2.6.32-atom #179
      -------------------------------------------------------
      rm/3242 is trying to acquire lock:
       (&sb->s_type->i_mutex_key#4/3){+.+.+.}, at: [<c11428ef>] reiserfs_for_each_xattr+0x23f/0x290
      
      but task is already holding lock:
       (&REISERFS_SB(s)->lock){+.+.+.}, at: [<c1143389>] reiserfs_write_lock+0x29/0x40
      
      which lock already depends on the new lock.
      
      the existing dependency chain (in reverse order) is:
      
      -> #1 (&REISERFS_SB(s)->lock){+.+.+.}:
             [<c105ea7f>] __lock_acquire+0x11ff/0x19e0
             [<c105f2c8>] lock_acquire+0x68/0x90
             [<c1401aab>] mutex_lock_nested+0x5b/0x340
             [<c1143339>] reiserfs_write_lock_once+0x29/0x50
             [<c1117022>] reiserfs_lookup+0x62/0x140
             [<c10bd85f>] __lookup_hash+0xef/0x110
             [<c10bf21d>] lookup_one_len+0x8d/0xc0
             [<c1141e3a>] open_xa_dir+0xea/0x1b0
             [<c1142720>] reiserfs_for_each_xattr+0x70/0x290
             [<c11429ba>] reiserfs_delete_xattrs+0x1a/0x60
             [<c111ea2f>] reiserfs_delete_inode+0x9f/0x150
             [<c10c9c32>] generic_delete_inode+0xa2/0x170
             [<c10c9d4f>] generic_drop_inode+0x4f/0x70
             [<c10c8b07>] iput+0x47/0x50
             [<c10c0965>] do_unlinkat+0xd5/0x160
             [<c10c0b13>] sys_unlinkat+0x23/0x40
             [<c1002ec4>] sysenter_do_call+0x12/0x32
      
      -> #0 (&sb->s_type->i_mutex_key#4/3){+.+.+.}:
             [<c105f176>] __lock_acquire+0x18f6/0x19e0
             [<c105f2c8>] lock_acquire+0x68/0x90
             [<c1401aab>] mutex_lock_nested+0x5b/0x340
             [<c11428ef>] reiserfs_for_each_xattr+0x23f/0x290
             [<c11429ba>] reiserfs_delete_xattrs+0x1a/0x60
             [<c111ea2f>] reiserfs_delete_inode+0x9f/0x150
             [<c10c9c32>] generic_delete_inode+0xa2/0x170
             [<c10c9d4f>] generic_drop_inode+0x4f/0x70
             [<c10c8b07>] iput+0x47/0x50
             [<c10c0965>] do_unlinkat+0xd5/0x160
             [<c10c0b13>] sys_unlinkat+0x23/0x40
             [<c1002ec4>] sysenter_do_call+0x12/0x32
      
      other info that might help us debug this:
      
      1 lock held by rm/3242:
       #0:  (&REISERFS_SB(s)->lock){+.+.+.}, at: [<c1143389>] reiserfs_write_lock+0x29/0x40
      
      stack backtrace:
      Pid: 3242, comm: rm Not tainted 2.6.32-atom #179
      Call Trace:
       [<c13ffa13>] ? printk+0x18/0x1a
       [<c105d33a>] print_circular_bug+0xca/0xd0
       [<c105f176>] __lock_acquire+0x18f6/0x19e0
       [<c105c932>] ? mark_held_locks+0x62/0x80
       [<c105cc3b>] ? trace_hardirqs_on+0xb/0x10
       [<c1401098>] ? mutex_unlock+0x8/0x10
       [<c105f2c8>] lock_acquire+0x68/0x90
       [<c11428ef>] ? reiserfs_for_each_xattr+0x23f/0x290
       [<c11428ef>] ? reiserfs_for_each_xattr+0x23f/0x290
       [<c1401aab>] mutex_lock_nested+0x5b/0x340
       [<c11428ef>] ? reiserfs_for_each_xattr+0x23f/0x290
       [<c11428ef>] reiserfs_for_each_xattr+0x23f/0x290
       [<c1143180>] ? delete_one_xattr+0x0/0x100
       [<c11429ba>] reiserfs_delete_xattrs+0x1a/0x60
       [<c1143339>] ? reiserfs_write_lock_once+0x29/0x50
       [<c111ea2f>] reiserfs_delete_inode+0x9f/0x150
       [<c11b0d4f>] ? _atomic_dec_and_lock+0x4f/0x70
       [<c111e990>] ? reiserfs_delete_inode+0x0/0x150
       [<c10c9c32>] generic_delete_inode+0xa2/0x170
       [<c10c9d4f>] generic_drop_inode+0x4f/0x70
       [<c10c8b07>] iput+0x47/0x50
       [<c10c0965>] do_unlinkat+0xd5/0x160
       [<c1401098>] ? mutex_unlock+0x8/0x10
       [<c10c3e0d>] ? vfs_readdir+0x7d/0xb0
       [<c10c3af0>] ? filldir64+0x0/0xf0
       [<c1002ef3>] ? sysenter_exit+0xf/0x16
       [<c105cbe4>] ? trace_hardirqs_on_caller+0x124/0x170
       [<c10c0b13>] sys_unlinkat+0x23/0x40
       [<c1002ec4>] sysenter_do_call+0x12/0x32
      Signed-off-by: default avatarFrederic Weisbecker <[email protected]>
      Tested-by: default avatarChristian Kujau <[email protected]>
      Cc: Alexander Beregalov <[email protected]>
      Cc: Chris Mason <[email protected]>
      Cc: Ingo Molnar <[email protected]>
      8b513f56
    • Frederic Weisbecker's avatar
      reiserfs: Fix journal mutex <-> inode mutex lock inversion · 4dd85969
      Frederic Weisbecker authored
      We need to relax the reiserfs lock before locking the inode mutex
      from xattr_unlink(), otherwise we'll face the usual bad dependencies:
      
      =======================================================
      [ INFO: possible circular locking dependency detected ]
      2.6.32-atom #178
      -------------------------------------------------------
      rm/3202 is trying to acquire lock:
       (&journal->j_mutex){+.+...}, at: [<c113c234>] do_journal_begin_r+0x94/0x360
      
      but task is already holding lock:
       (&sb->s_type->i_mutex_key#4/2){+.+...}, at: [<c1142a67>] xattr_unlink+0x57/0xb0
      
      which lock already depends on the new lock.
      
      the existing dependency chain (in reverse order) is:
      
      -> #2 (&sb->s_type->i_mutex_key#4/2){+.+...}:
             [<c105ea7f>] __lock_acquire+0x11ff/0x19e0
             [<c105f2c8>] lock_acquire+0x68/0x90
             [<c1401a7b>] mutex_lock_nested+0x5b/0x340
             [<c1142a67>] xattr_unlink+0x57/0xb0
             [<c1143179>] delete_one_xattr+0x29/0x100
             [<c11427bb>] reiserfs_for_each_xattr+0x10b/0x290
             [<c11429ba>] reiserfs_delete_xattrs+0x1a/0x60
             [<c111ea2f>] reiserfs_delete_inode+0x9f/0x150
             [<c10c9c32>] generic_delete_inode+0xa2/0x170
             [<c10c9d4f>] generic_drop_inode+0x4f/0x70
             [<c10c8b07>] iput+0x47/0x50
             [<c10c0965>] do_unlinkat+0xd5/0x160
             [<c10c0b13>] sys_unlinkat+0x23/0x40
             [<c1002ec4>] sysenter_do_call+0x12/0x32
      
      -> #1 (&REISERFS_SB(s)->lock){+.+.+.}:
             [<c105ea7f>] __lock_acquire+0x11ff/0x19e0
             [<c105f2c8>] lock_acquire+0x68/0x90
             [<c1401a7b>] mutex_lock_nested+0x5b/0x340
             [<c1143359>] reiserfs_write_lock+0x29/0x40
             [<c113c23c>] do_journal_begin_r+0x9c/0x360
             [<c113c680>] journal_begin+0x80/0x130
             [<c1127363>] reiserfs_remount+0x223/0x4e0
             [<c10b6dd6>] do_remount_sb+0xa6/0x140
             [<c10ce6a0>] do_mount+0x560/0x750
             [<c10ce914>] sys_mount+0x84/0xb0
             [<c1002ec4>] sysenter_do_call+0x12/0x32
      
      -> #0 (&journal->j_mutex){+.+...}:
             [<c105f176>] __lock_acquire+0x18f6/0x19e0
             [<c105f2c8>] lock_acquire+0x68/0x90
             [<c1401a7b>] mutex_lock_nested+0x5b/0x340
             [<c113c234>] do_journal_begin_r+0x94/0x360
             [<c113c680>] journal_begin+0x80/0x130
             [<c1116d63>] reiserfs_unlink+0x83/0x2e0
             [<c1142a74>] xattr_unlink+0x64/0xb0
             [<c1143179>] delete_one_xattr+0x29/0x100
             [<c11427bb>] reiserfs_for_each_xattr+0x10b/0x290
             [<c11429ba>] reiserfs_delete_xattrs+0x1a/0x60
             [<c111ea2f>] reiserfs_delete_inode+0x9f/0x150
             [<c10c9c32>] generic_delete_inode+0xa2/0x170
             [<c10c9d4f>] generic_drop_inode+0x4f/0x70
             [<c10c8b07>] iput+0x47/0x50
             [<c10c0965>] do_unlinkat+0xd5/0x160
             [<c10c0b13>] sys_unlinkat+0x23/0x40
             [<c1002ec4>] sysenter_do_call+0x12/0x32
      
      other info that might help us debug this:
      
      2 locks held by rm/3202:
       #0:  (&sb->s_type->i_mutex_key#4/3){+.+.+.}, at: [<c114274b>] reiserfs_for_each_xattr+0x9b/0x290
       #1:  (&sb->s_type->i_mutex_key#4/2){+.+...}, at: [<c1142a67>] xattr_unlink+0x57/0xb0
      
      stack backtrace:
      Pid: 3202, comm: rm Not tainted 2.6.32-atom #178
      Call Trace:
       [<c13ff9e3>] ? printk+0x18/0x1a
       [<c105d33a>] print_circular_bug+0xca/0xd0
       [<c105f176>] __lock_acquire+0x18f6/0x19e0
       [<c1142a67>] ? xattr_unlink+0x57/0xb0
       [<c105f2c8>] lock_acquire+0x68/0x90
       [<c113c234>] ? do_journal_begin_r+0x94/0x360
       [<c113c234>] ? do_journal_begin_r+0x94/0x360
       [<c1401a7b>] mutex_lock_nested+0x5b/0x340
       [<c113c234>] ? do_journal_begin_r+0x94/0x360
       [<c113c234>] do_journal_begin_r+0x94/0x360
       [<c10411b6>] ? run_timer_softirq+0x1a6/0x220
       [<c103cb00>] ? __do_softirq+0x50/0x140
       [<c113c680>] journal_begin+0x80/0x130
       [<c103cba2>] ? __do_softirq+0xf2/0x140
       [<c104f72f>] ? hrtimer_interrupt+0xdf/0x220
       [<c1116d63>] reiserfs_unlink+0x83/0x2e0
       [<c105c932>] ? mark_held_locks+0x62/0x80
       [<c11b8d08>] ? trace_hardirqs_on_thunk+0xc/0x10
       [<c1002fd8>] ? restore_all_notrace+0x0/0x18
       [<c1142a67>] ? xattr_unlink+0x57/0xb0
       [<c1142a74>] xattr_unlink+0x64/0xb0
       [<c1143179>] delete_one_xattr+0x29/0x100
       [<c11427bb>] reiserfs_for_each_xattr+0x10b/0x290
       [<c1143150>] ? delete_one_xattr+0x0/0x100
       [<c1401cb9>] ? mutex_lock_nested+0x299/0x340
       [<c11429ba>] reiserfs_delete_xattrs+0x1a/0x60
       [<c1143309>] ? reiserfs_write_lock_once+0x29/0x50
       [<c111ea2f>] reiserfs_delete_inode+0x9f/0x150
       [<c11b0d1f>] ? _atomic_dec_and_lock+0x4f/0x70
       [<c111e990>] ? reiserfs_delete_inode+0x0/0x150
       [<c10c9c32>] generic_delete_inode+0xa2/0x170
       [<c10c9d4f>] generic_drop_inode+0x4f/0x70
       [<c10c8b07>] iput+0x47/0x50
       [<c10c0965>] do_unlinkat+0xd5/0x160
       [<c1401068>] ? mutex_unlock+0x8/0x10
       [<c10c3e0d>] ? vfs_readdir+0x7d/0xb0
       [<c10c3af0>] ? filldir64+0x0/0xf0
       [<c1002ef3>] ? sysenter_exit+0xf/0x16
       [<c105cbe4>] ? trace_hardirqs_on_caller+0x124/0x170
       [<c10c0b13>] sys_unlinkat+0x23/0x40
       [<c1002ec4>] sysenter_do_call+0x12/0x32
      Signed-off-by: default avatarFrederic Weisbecker <[email protected]>
      Tested-by: default avatarChristian Kujau <[email protected]>
      Cc: Alexander Beregalov <[email protected]>
      Cc: Chris Mason <[email protected]>
      Cc: Ingo Molnar <[email protected]>
      4dd85969
    • Frederic Weisbecker's avatar
      reiserfs: Fix unwanted recursive reiserfs lock in reiserfs_unlink() · c674905c
      Frederic Weisbecker authored
      reiserfs_unlink() may or may not be called under the reiserfs
      lock.
      But it also takes the reiserfs lock and can then acquire it
      recursively which leads to do_journal_begin_r() that fails to
      relax the reiserfs lock before grabbing the journal mutex,
      creating an unexpected lock inversion.
      
      We need to ensure reiserfs_unlink() won't get the reiserfs lock
      recursively using reiserfs_write_lock_once().
      
      This fixes the following warning that precedes a lock inversion
      report (reiserfs lock <-> journal mutex).
      
      ------------[ cut here ]------------
      WARNING: at fs/reiserfs/lock.c:95 reiserfs_lock_check_recursive+0x3a/0x50()
      Hardware name: MS-7418
      Unwanted recursive reiserfs lock!
      Pid: 3208, comm: dbench Not tainted 2.6.32-atom #177
      Call Trace:
       [<c114327a>] ? reiserfs_lock_check_recursive+0x3a/0x50
       [<c114327a>] ? reiserfs_lock_check_recursive+0x3a/0x50
       [<c10373a7>] warn_slowpath_common+0x67/0xc0
       [<c114327a>] ? reiserfs_lock_check_recursive+0x3a/0x50
       [<c1037446>] warn_slowpath_fmt+0x26/0x30
       [<c114327a>] reiserfs_lock_check_recursive+0x3a/0x50
       [<c113c213>] do_journal_begin_r+0x83/0x360
       [<c105eb16>] ? __lock_acquire+0x1296/0x19e0
       [<c1142a57>] ? xattr_unlink+0x57/0xb0
       [<c113c670>] journal_begin+0x80/0x130
       [<c1116d5d>] reiserfs_unlink+0x7d/0x2d0
       [<c1142a57>] ? xattr_unlink+0x57/0xb0
       [<c1142a57>] ? xattr_unlink+0x57/0xb0
       [<c1142a57>] ? xattr_unlink+0x57/0xb0
       [<c1142a64>] xattr_unlink+0x64/0xb0
       [<c1143169>] delete_one_xattr+0x29/0x100
       [<c11427ab>] reiserfs_for_each_xattr+0x10b/0x290
       [<c1143140>] ? delete_one_xattr+0x0/0x100
       [<c1401ca9>] ? mutex_lock_nested+0x299/0x340
       [<c11429aa>] reiserfs_delete_xattrs+0x1a/0x60
       [<c11432f9>] ? reiserfs_write_lock_once+0x29/0x50
       [<c111ea1f>] reiserfs_delete_inode+0x9f/0x150
       [<c11b0d0f>] ? _atomic_dec_and_lock+0x4f/0x70
       [<c111e980>] ? reiserfs_delete_inode+0x0/0x150
       [<c10c9c32>] generic_delete_inode+0xa2/0x170
       [<c10c9d4f>] generic_drop_inode+0x4f/0x70
       [<c10c8b07>] iput+0x47/0x50
       [<c10c0965>] do_unlinkat+0xd5/0x160
       [<c10505c6>] ? up_read+0x16/0x30
       [<c1022ab7>] ? do_page_fault+0x187/0x330
       [<c1002fd8>] ? restore_all_notrace+0x0/0x18
       [<c1022930>] ? do_page_fault+0x0/0x330
       [<c105cbe4>] ? trace_hardirqs_on_caller+0x124/0x170
       [<c10c0a00>] sys_unlink+0x10/0x20
       [<c1002ec4>] sysenter_do_call+0x12/0x32
      ---[ end trace 2e35d71a6cc69d0c ]---
      Signed-off-by: default avatarFrederic Weisbecker <[email protected]>
      Tested-by: default avatarChristian Kujau <[email protected]>
      Cc: Alexander Beregalov <[email protected]>
      Cc: Chris Mason <[email protected]>
      Cc: Ingo Molnar <[email protected]>
      c674905c
    • Frederic Weisbecker's avatar
      reiserfs: Relax lock before open xattr dir in reiserfs_xattr_set_handle() · 3f14fea6
      Frederic Weisbecker authored
      We call xattr_lookup() from reiserfs_xattr_get(). We then hold
      the reiserfs lock when we grab the i_mutex. But later, we may
      relax the reiserfs lock, creating dependency inversion between
      both locks.
      
      The lookups and creation jobs ar already protected by the
      inode mutex, so we can safely relax the reiserfs lock, dropping
      the unwanted reiserfs lock -> i_mutex dependency, as shown
      in the following lockdep report:
      
      =======================================================
      [ INFO: possible circular locking dependency detected ]
      2.6.32-atom #173
      -------------------------------------------------------
      cp/3204 is trying to acquire lock:
       (&REISERFS_SB(s)->lock){+.+.+.}, at: [<c11432b9>] reiserfs_write_lock_once+0x29/0x50
      
      but task is already holding lock:
       (&sb->s_type->i_mutex_key#4/3){+.+.+.}, at: [<c1141e18>] open_xa_dir+0xd8/0x1b0
      
      which lock already depends on the new lock.
      
      the existing dependency chain (in reverse order) is:
      
      -> #1 (&sb->s_type->i_mutex_key#4/3){+.+.+.}:
             [<c105ea7f>] __lock_acquire+0x11ff/0x19e0
             [<c105f2c8>] lock_acquire+0x68/0x90
             [<c1401a2b>] mutex_lock_nested+0x5b/0x340
             [<c1141d83>] open_xa_dir+0x43/0x1b0
             [<c1142722>] reiserfs_for_each_xattr+0x62/0x260
             [<c114299a>] reiserfs_delete_xattrs+0x1a/0x60
             [<c111ea1f>] reiserfs_delete_inode+0x9f/0x150
             [<c10c9c32>] generic_delete_inode+0xa2/0x170
             [<c10c9d4f>] generic_drop_inode+0x4f/0x70
             [<c10c8b07>] iput+0x47/0x50
             [<c10c0965>] do_unlinkat+0xd5/0x160
             [<c10c0a00>] sys_unlink+0x10/0x20
             [<c1002ec4>] sysenter_do_call+0x12/0x32
      
      -> #0 (&REISERFS_SB(s)->lock){+.+.+.}:
             [<c105f176>] __lock_acquire+0x18f6/0x19e0
             [<c105f2c8>] lock_acquire+0x68/0x90
             [<c1401a2b>] mutex_lock_nested+0x5b/0x340
             [<c11432b9>] reiserfs_write_lock_once+0x29/0x50
             [<c1117012>] reiserfs_lookup+0x62/0x140
             [<c10bd85f>] __lookup_hash+0xef/0x110
             [<c10bf21d>] lookup_one_len+0x8d/0xc0
             [<c1141e2a>] open_xa_dir+0xea/0x1b0
             [<c1141fe5>] xattr_lookup+0x15/0x160
             [<c1142476>] reiserfs_xattr_get+0x56/0x2a0
             [<c1144042>] reiserfs_get_acl+0xa2/0x360
             [<c114461a>] reiserfs_cache_default_acl+0x3a/0x160
             [<c111789c>] reiserfs_mkdir+0x6c/0x2c0
             [<c10bea96>] vfs_mkdir+0xd6/0x180
             [<c10c0c10>] sys_mkdirat+0xc0/0xd0
             [<c10c0c40>] sys_mkdir+0x20/0x30
             [<c1002ec4>] sysenter_do_call+0x12/0x32
      
      other info that might help us debug this:
      
      2 locks held by cp/3204:
       #0:  (&sb->s_type->i_mutex_key#4/1){+.+.+.}, at: [<c10bd8d6>] lookup_create+0x26/0xa0
       #1:  (&sb->s_type->i_mutex_key#4/3){+.+.+.}, at: [<c1141e18>] open_xa_dir+0xd8/0x1b0
      
      stack backtrace:
      Pid: 3204, comm: cp Not tainted 2.6.32-atom #173
      Call Trace:
       [<c13ff993>] ? printk+0x18/0x1a
       [<c105d33a>] print_circular_bug+0xca/0xd0
       [<c105f176>] __lock_acquire+0x18f6/0x19e0
       [<c105d3aa>] ? check_usage+0x6a/0x460
       [<c105f2c8>] lock_acquire+0x68/0x90
       [<c11432b9>] ? reiserfs_write_lock_once+0x29/0x50
       [<c11432b9>] ? reiserfs_write_lock_once+0x29/0x50
       [<c1401a2b>] mutex_lock_nested+0x5b/0x340
       [<c11432b9>] ? reiserfs_write_lock_once+0x29/0x50
       [<c11432b9>] reiserfs_write_lock_once+0x29/0x50
       [<c1117012>] reiserfs_lookup+0x62/0x140
       [<c105ccca>] ? debug_check_no_locks_freed+0x8a/0x140
       [<c105cbe4>] ? trace_hardirqs_on_caller+0x124/0x170
       [<c10bd85f>] __lookup_hash+0xef/0x110
       [<c10bf21d>] lookup_one_len+0x8d/0xc0
       [<c1141e2a>] open_xa_dir+0xea/0x1b0
       [<c1141fe5>] xattr_lookup+0x15/0x160
       [<c1142476>] reiserfs_xattr_get+0x56/0x2a0
       [<c1144042>] reiserfs_get_acl+0xa2/0x360
       [<c10ca2e7>] ? new_inode+0x27/0xa0
       [<c114461a>] reiserfs_cache_default_acl+0x3a/0x160
       [<c1402eb7>] ? _spin_unlock+0x27/0x40
       [<c111789c>] reiserfs_mkdir+0x6c/0x2c0
       [<c10c7cb8>] ? __d_lookup+0x108/0x190
       [<c105c932>] ? mark_held_locks+0x62/0x80
       [<c1401c8d>] ? mutex_lock_nested+0x2bd/0x340
       [<c10bd17a>] ? generic_permission+0x1a/0xa0
       [<c11788fe>] ? security_inode_permission+0x1e/0x20
       [<c10bea96>] vfs_mkdir+0xd6/0x180
       [<c10c0c10>] sys_mkdirat+0xc0/0xd0
       [<c10505c6>] ? up_read+0x16/0x30
       [<c1002fd8>] ? restore_all_notrace+0x0/0x18
       [<c10c0c40>] sys_mkdir+0x20/0x30
       [<c1002ec4>] sysenter_do_call+0x12/0x32
      Signed-off-by: default avatarFrederic Weisbecker <[email protected]>
      Tested-by: default avatarChristian Kujau <[email protected]>
      Cc: Alexander Beregalov <[email protected]>
      Cc: Chris Mason <[email protected]>
      Cc: Ingo Molnar <[email protected]>
      3f14fea6
    • Frederic Weisbecker's avatar
      reiserfs: Relax reiserfs lock while freeing the journal · 0523676d
      Frederic Weisbecker authored
      Keeping the reiserfs lock while freeing the journal on
      umount path triggers a lock inversion between bdev->bd_mutex
      and the reiserfs lock.
      
      We don't need the reiserfs lock at this stage. The filesystem
      is not usable anymore, and there are no more pending commits,
      everything got flushed (even this operation was done in parallel
      and didn't required the reiserfs lock from the current process).
      
      This fixes the following lockdep report:
      
      =======================================================
      [ INFO: possible circular locking dependency detected ]
      2.6.32-atom #172
      -------------------------------------------------------
      umount/3904 is trying to acquire lock:
       (&bdev->bd_mutex){+.+.+.}, at: [<c10de2c2>] __blkdev_put+0x22/0x160
      
      but task is already holding lock:
       (&REISERFS_SB(s)->lock){+.+.+.}, at: [<c1143279>] reiserfs_write_lock+0x29/0x40
      
      which lock already depends on the new lock.
      
      the existing dependency chain (in reverse order) is:
      
      -> #3 (&REISERFS_SB(s)->lock){+.+.+.}:
             [<c105ea7f>] __lock_acquire+0x11ff/0x19e0
             [<c105f2c8>] lock_acquire+0x68/0x90
             [<c140199b>] mutex_lock_nested+0x5b/0x340
             [<c1143229>] reiserfs_write_lock_once+0x29/0x50
             [<c111c485>] reiserfs_get_block+0x85/0x1620
             [<c10e1040>] do_mpage_readpage+0x1f0/0x6d0
             [<c10e1640>] mpage_readpages+0xc0/0x100
             [<c1119b89>] reiserfs_readpages+0x19/0x20
             [<c108f1ec>] __do_page_cache_readahead+0x1bc/0x260
             [<c108f2b8>] ra_submit+0x28/0x40
             [<c1087e3e>] filemap_fault+0x40e/0x420
             [<c109b5fd>] __do_fault+0x3d/0x430
             [<c109d47e>] handle_mm_fault+0x12e/0x790
             [<c1022a65>] do_page_fault+0x135/0x330
             [<c1403663>] error_code+0x6b/0x70
             [<c10ef9ca>] load_elf_binary+0x82a/0x1a10
             [<c10ba130>] search_binary_handler+0x90/0x1d0
             [<c10bb70f>] do_execve+0x1df/0x250
             [<c1001746>] sys_execve+0x46/0x70
             [<c1002fa5>] syscall_call+0x7/0xb
      
      -> #2 (&mm->mmap_sem){++++++}:
             [<c105ea7f>] __lock_acquire+0x11ff/0x19e0
             [<c105f2c8>] lock_acquire+0x68/0x90
             [<c109b1ab>] might_fault+0x8b/0xb0
             [<c11b8f52>] copy_to_user+0x32/0x70
             [<c10c3b94>] filldir64+0xa4/0xf0
             [<c1109116>] sysfs_readdir+0x116/0x210
             [<c10c3e1d>] vfs_readdir+0x8d/0xb0
             [<c10c3ea9>] sys_getdents64+0x69/0xb0
             [<c1002ec4>] sysenter_do_call+0x12/0x32
      
      -> #1 (sysfs_mutex){+.+.+.}:
             [<c105ea7f>] __lock_acquire+0x11ff/0x19e0
             [<c105f2c8>] lock_acquire+0x68/0x90
             [<c140199b>] mutex_lock_nested+0x5b/0x340
             [<c110951c>] sysfs_addrm_start+0x2c/0xb0
             [<c1109aa0>] create_dir+0x40/0x90
             [<c1109b1b>] sysfs_create_dir+0x2b/0x50
             [<c11b2352>] kobject_add_internal+0xc2/0x1b0
             [<c11b2531>] kobject_add_varg+0x31/0x50
             [<c11b25ac>] kobject_add+0x2c/0x60
             [<c1258294>] device_add+0x94/0x560
             [<c11036ea>] add_partition+0x18a/0x2a0
             [<c110418a>] rescan_partitions+0x33a/0x450
             [<c10de5bf>] __blkdev_get+0x12f/0x2d0
             [<c10de76a>] blkdev_get+0xa/0x10
             [<c11034b8>] register_disk+0x108/0x130
             [<c11a87a9>] add_disk+0xd9/0x130
             [<c12998e5>] sd_probe_async+0x105/0x1d0
             [<c10528af>] async_thread+0xcf/0x230
             [<c104bfd4>] kthread+0x74/0x80
             [<c1003aab>] kernel_thread_helper+0x7/0x3c
      
      -> #0 (&bdev->bd_mutex){+.+.+.}:
             [<c105f176>] __lock_acquire+0x18f6/0x19e0
             [<c105f2c8>] lock_acquire+0x68/0x90
             [<c140199b>] mutex_lock_nested+0x5b/0x340
             [<c10de2c2>] __blkdev_put+0x22/0x160
             [<c10de40a>] blkdev_put+0xa/0x10
             [<c113ce22>] free_journal_ram+0xd2/0x130
             [<c113ea18>] do_journal_release+0x98/0x190
             [<c113eb2a>] journal_release+0xa/0x10
             [<c1128eb6>] reiserfs_put_super+0x36/0x130
             [<c10b776f>] generic_shutdown_super+0x4f/0xe0
             [<c10b7825>] kill_block_super+0x25/0x40
             [<c11255df>] reiserfs_kill_sb+0x7f/0x90
             [<c10b7f4a>] deactivate_super+0x7a/0x90
             [<c10cccd8>] mntput_no_expire+0x98/0xd0
             [<c10ccfcc>] sys_umount+0x4c/0x310
             [<c10cd2a9>] sys_oldumount+0x19/0x20
             [<c1002ec4>] sysenter_do_call+0x12/0x32
      
      other info that might help us debug this:
      
      2 locks held by umount/3904:
       #0:  (&type->s_umount_key#30){+++++.}, at: [<c10b7f45>] deactivate_super+0x75/0x90
       #1:  (&REISERFS_SB(s)->lock){+.+.+.}, at: [<c1143279>] reiserfs_write_lock+0x29/0x40
      
      stack backtrace:
      Pid: 3904, comm: umount Not tainted 2.6.32-atom #172
      Call Trace:
       [<c13ff903>] ? printk+0x18/0x1a
       [<c105d33a>] print_circular_bug+0xca/0xd0
       [<c105f176>] __lock_acquire+0x18f6/0x19e0
       [<c108b66f>] ? free_pcppages_bulk+0x1f/0x250
       [<c105f2c8>] lock_acquire+0x68/0x90
       [<c10de2c2>] ? __blkdev_put+0x22/0x160
       [<c10de2c2>] ? __blkdev_put+0x22/0x160
       [<c140199b>] mutex_lock_nested+0x5b/0x340
       [<c10de2c2>] ? __blkdev_put+0x22/0x160
       [<c105c932>] ? mark_held_locks+0x62/0x80
       [<c10afe12>] ? kfree+0x92/0xd0
       [<c10de2c2>] __blkdev_put+0x22/0x160
       [<c105cc3b>] ? trace_hardirqs_on+0xb/0x10
       [<c10de40a>] blkdev_put+0xa/0x10
       [<c113ce22>] free_journal_ram+0xd2/0x130
       [<c113ea18>] do_journal_release+0x98/0x190
       [<c113eb2a>] journal_release+0xa/0x10
       [<c1128eb6>] reiserfs_put_super+0x36/0x130
       [<c1050596>] ? up_write+0x16/0x30
       [<c10b776f>] generic_shutdown_super+0x4f/0xe0
       [<c10b7825>] kill_block_super+0x25/0x40
       [<c10f41e0>] ? vfs_quota_off+0x0/0x20
       [<c11255df>] reiserfs_kill_sb+0x7f/0x90
       [<c10b7f4a>] deactivate_super+0x7a/0x90
       [<c10cccd8>] mntput_no_expire+0x98/0xd0
       [<c10ccfcc>] sys_umount+0x4c/0x310
       [<c10cd2a9>] sys_oldumount+0x19/0x20
       [<c1002ec4>] sysenter_do_call+0x12/0x32
      Signed-off-by: default avatarFrederic Weisbecker <[email protected]>
      Cc: Alexander Beregalov <[email protected]>
      Cc: Chris Mason <[email protected]>
      Cc: Ingo Molnar <[email protected]>
      0523676d
    • Frederic Weisbecker's avatar
      reiserfs: Fix reiserfs lock <-> i_mutex dependency inversion on xattr · 27026a05
      Frederic Weisbecker authored
      While deleting the xattrs of an inode, we hold the reiserfs lock
      and grab the inode->i_mutex of the targeted inode and the root
      private xattr directory.
      
      Later on, we may relax the reiserfs lock for various reasons, this
      creates inverted dependencies.
      
      We can remove the reiserfs lock -> i_mutex dependency by relaxing
      the former before calling open_xa_dir(). This is fine because the
      lookup and creation of xattr private directories done in
      open_xa_dir() are covered by the targeted inode mutexes. And deeper
      operations in the tree are still done under the write lock.
      
      This fixes the following lockdep report:
      
      =======================================================
      [ INFO: possible circular locking dependency detected ]
      2.6.32-atom #173
      -------------------------------------------------------
      cp/3204 is trying to acquire lock:
       (&REISERFS_SB(s)->lock){+.+.+.}, at: [<c11432b9>] reiserfs_write_lock_once+0x29/0x50
      
      but task is already holding lock:
       (&sb->s_type->i_mutex_key#4/3){+.+.+.}, at: [<c1141e18>] open_xa_dir+0xd8/0x1b0
      
      which lock already depends on the new lock.
      
      the existing dependency chain (in reverse order) is:
      
      -> #1 (&sb->s_type->i_mutex_key#4/3){+.+.+.}:
             [<c105ea7f>] __lock_acquire+0x11ff/0x19e0
             [<c105f2c8>] lock_acquire+0x68/0x90
             [<c1401a2b>] mutex_lock_nested+0x5b/0x340
             [<c1141d83>] open_xa_dir+0x43/0x1b0
             [<c1142722>] reiserfs_for_each_xattr+0x62/0x260
             [<c114299a>] reiserfs_delete_xattrs+0x1a/0x60
             [<c111ea1f>] reiserfs_delete_inode+0x9f/0x150
             [<c10c9c32>] generic_delete_inode+0xa2/0x170
             [<c10c9d4f>] generic_drop_inode+0x4f/0x70
             [<c10c8b07>] iput+0x47/0x50
             [<c10c0965>] do_unlinkat+0xd5/0x160
             [<c10c0a00>] sys_unlink+0x10/0x20
             [<c1002ec4>] sysenter_do_call+0x12/0x32
      
      -> #0 (&REISERFS_SB(s)->lock){+.+.+.}:
             [<c105f176>] __lock_acquire+0x18f6/0x19e0
             [<c105f2c8>] lock_acquire+0x68/0x90
             [<c1401a2b>] mutex_lock_nested+0x5b/0x340
             [<c11432b9>] reiserfs_write_lock_once+0x29/0x50
             [<c1117012>] reiserfs_lookup+0x62/0x140
             [<c10bd85f>] __lookup_hash+0xef/0x110
             [<c10bf21d>] lookup_one_len+0x8d/0xc0
             [<c1141e2a>] open_xa_dir+0xea/0x1b0
             [<c1141fe5>] xattr_lookup+0x15/0x160
             [<c1142476>] reiserfs_xattr_get+0x56/0x2a0
             [<c1144042>] reiserfs_get_acl+0xa2/0x360
             [<c114461a>] reiserfs_cache_default_acl+0x3a/0x160
             [<c111789c>] reiserfs_mkdir+0x6c/0x2c0
             [<c10bea96>] vfs_mkdir+0xd6/0x180
             [<c10c0c10>] sys_mkdirat+0xc0/0xd0
             [<c10c0c40>] sys_mkdir+0x20/0x30
             [<c1002ec4>] sysenter_do_call+0x12/0x32
      
      other info that might help us debug this:
      
      2 locks held by cp/3204:
       #0:  (&sb->s_type->i_mutex_key#4/1){+.+.+.}, at: [<c10bd8d6>] lookup_create+0x26/0xa0
       #1:  (&sb->s_type->i_mutex_key#4/3){+.+.+.}, at: [<c1141e18>] open_xa_dir+0xd8/0x1b0
      
      stack backtrace:
      Pid: 3204, comm: cp Not tainted 2.6.32-atom #173
      Call Trace:
       [<c13ff993>] ? printk+0x18/0x1a
       [<c105d33a>] print_circular_bug+0xca/0xd0
       [<c105f176>] __lock_acquire+0x18f6/0x19e0
       [<c105d3aa>] ? check_usage+0x6a/0x460
       [<c105f2c8>] lock_acquire+0x68/0x90
       [<c11432b9>] ? reiserfs_write_lock_once+0x29/0x50
       [<c11432b9>] ? reiserfs_write_lock_once+0x29/0x50
       [<c1401a2b>] mutex_lock_nested+0x5b/0x340
       [<c11432b9>] ? reiserfs_write_lock_once+0x29/0x50
       [<c11432b9>] reiserfs_write_lock_once+0x29/0x50
       [<c1117012>] reiserfs_lookup+0x62/0x140
       [<c105ccca>] ? debug_check_no_locks_freed+0x8a/0x140
       [<c105cbe4>] ? trace_hardirqs_on_caller+0x124/0x170
       [<c10bd85f>] __lookup_hash+0xef/0x110
       [<c10bf21d>] lookup_one_len+0x8d/0xc0
       [<c1141e2a>] open_xa_dir+0xea/0x1b0
       [<c1141fe5>] xattr_lookup+0x15/0x160
       [<c1142476>] reiserfs_xattr_get+0x56/0x2a0
       [<c1144042>] reiserfs_get_acl+0xa2/0x360
       [<c10ca2e7>] ? new_inode+0x27/0xa0
       [<c114461a>] reiserfs_cache_default_acl+0x3a/0x160
       [<c1402eb7>] ? _spin_unlock+0x27/0x40
       [<c111789c>] reiserfs_mkdir+0x6c/0x2c0
       [<c10c7cb8>] ? __d_lookup+0x108/0x190
       [<c105c932>] ? mark_held_locks+0x62/0x80
       [<c1401c8d>] ? mutex_lock_nested+0x2bd/0x340
       [<c10bd17a>] ? generic_permission+0x1a/0xa0
       [<c11788fe>] ? security_inode_permission+0x1e/0x20
       [<c10bea96>] vfs_mkdir+0xd6/0x180
       [<c10c0c10>] sys_mkdirat+0xc0/0xd0
       [<c10505c6>] ? up_read+0x16/0x30
       [<c1002fd8>] ? restore_all_notrace+0x0/0x18
       [<c10c0c40>] sys_mkdir+0x20/0x30
       [<c1002ec4>] sysenter_do_call+0x12/0x32
      
      v2: Don't drop reiserfs_mutex_lock_nested_safe() as we'll still
          need it later
      Signed-off-by: default avatarFrederic Weisbecker <[email protected]>
      Tested-by: default avatarChristian Kujau <[email protected]>
      Cc: Alexander Beregalov <[email protected]>
      Cc: Chris Mason <[email protected]>
      Cc: Ingo Molnar <[email protected]>
      27026a05
    • Frederic Weisbecker's avatar
      reiserfs: Warn on lock relax if taken recursively · c4a62ca3
      Frederic Weisbecker authored
      When we relax the reiserfs lock to avoid creating unwanted
      dependencies against others locks while grabbing these,
      we want to ensure it has not been taken recursively, otherwise
      the lock won't be really relaxed. Only its depth will be decreased.
      The unwanted dependency would then actually happen.
      
      To prevent from that, add a reiserfs_lock_check_recursive() call
      in the places that need it.
      Signed-off-by: default avatarFrederic Weisbecker <[email protected]>
      Cc: Alexander Beregalov <[email protected]>
      Cc: Chris Mason <[email protected]>
      Cc: Ingo Molnar <[email protected]>
      c4a62ca3
    • Frederic Weisbecker's avatar
      reiserfs: Fix reiserfs lock <-> i_xattr_sem dependency inversion · 0719d343
      Frederic Weisbecker authored
      i_xattr_sem depends on the reiserfs lock. But after we grab
      i_xattr_sem, we may relax/relock the reiserfs lock while waiting
      on a freezed filesystem, creating a dependency inversion between
      the two locks.
      
      In order to avoid the i_xattr_sem -> reiserfs lock dependency, let's
      create a reiserfs_down_read_safe() that acts like
      reiserfs_mutex_lock_safe(): relax the reiserfs lock while grabbing
      another lock to avoid undesired dependencies induced by the
      heivyweight reiserfs lock.
      
      This fixes the following warning:
      
      [  990.005931] =======================================================
      [  990.012373] [ INFO: possible circular locking dependency detected ]
      [  990.013233] 2.6.33-rc1 #1
      [  990.013233] -------------------------------------------------------
      [  990.013233] dbench/1891 is trying to acquire lock:
      [  990.013233]  (&REISERFS_SB(s)->lock){+.+.+.}, at: [<ffffffff81159505>] reiserfs_write_lock+0x35/0x50
      [  990.013233]
      [  990.013233] but task is already holding lock:
      [  990.013233]  (&REISERFS_I(inode)->i_xattr_sem){+.+.+.}, at: [<ffffffff8115899a>] reiserfs_xattr_set_handle+0x8a/0x470
      [  990.013233]
      [  990.013233] which lock already depends on the new lock.
      [  990.013233]
      [  990.013233]
      [  990.013233] the existing dependency chain (in reverse order) is:
      [  990.013233]
      [  990.013233] -> #1 (&REISERFS_I(inode)->i_xattr_sem){+.+.+.}:
      [  990.013233]        [<ffffffff81063afc>] __lock_acquire+0xf9c/0x1560
      [  990.013233]        [<ffffffff8106414f>] lock_acquire+0x8f/0xb0
      [  990.013233]        [<ffffffff814ac194>] down_write+0x44/0x80
      [  990.013233]        [<ffffffff8115899a>] reiserfs_xattr_set_handle+0x8a/0x470
      [  990.013233]        [<ffffffff81158e30>] reiserfs_xattr_set+0xb0/0x150
      [  990.013233]        [<ffffffff8115a6aa>] user_set+0x8a/0x90
      [  990.013233]        [<ffffffff8115901a>] reiserfs_setxattr+0xaa/0xb0
      [  990.013233]        [<ffffffff810e2596>] __vfs_setxattr_noperm+0x36/0xa0
      [  990.013233]        [<ffffffff810e26bc>] vfs_setxattr+0xbc/0xc0
      [  990.013233]        [<ffffffff810e2780>] setxattr+0xc0/0x150
      [  990.013233]        [<ffffffff810e289d>] sys_fsetxattr+0x8d/0xa0
      [  990.013233]        [<ffffffff81002dab>] system_call_fastpath+0x16/0x1b
      [  990.013233]
      [  990.013233] -> #0 (&REISERFS_SB(s)->lock){+.+.+.}:
      [  990.013233]        [<ffffffff81063e30>] __lock_acquire+0x12d0/0x1560
      [  990.013233]        [<ffffffff8106414f>] lock_acquire+0x8f/0xb0
      [  990.013233]        [<ffffffff814aba77>] __mutex_lock_common+0x47/0x3b0
      [  990.013233]        [<ffffffff814abebe>] mutex_lock_nested+0x3e/0x50
      [  990.013233]        [<ffffffff81159505>] reiserfs_write_lock+0x35/0x50
      [  990.013233]        [<ffffffff811340e5>] reiserfs_prepare_write+0x45/0x180
      [  990.013233]        [<ffffffff81158bb6>] reiserfs_xattr_set_handle+0x2a6/0x470
      [  990.013233]        [<ffffffff81158e30>] reiserfs_xattr_set+0xb0/0x150
      [  990.013233]        [<ffffffff8115a6aa>] user_set+0x8a/0x90
      [  990.013233]        [<ffffffff8115901a>] reiserfs_setxattr+0xaa/0xb0
      [  990.013233]        [<ffffffff810e2596>] __vfs_setxattr_noperm+0x36/0xa0
      [  990.013233]        [<ffffffff810e26bc>] vfs_setxattr+0xbc/0xc0
      [  990.013233]        [<ffffffff810e2780>] setxattr+0xc0/0x150
      [  990.013233]        [<ffffffff810e289d>] sys_fsetxattr+0x8d/0xa0
      [  990.013233]        [<ffffffff81002dab>] system_call_fastpath+0x16/0x1b
      [  990.013233]
      [  990.013233] other info that might help us debug this:
      [  990.013233]
      [  990.013233] 2 locks held by dbench/1891:
      [  990.013233]  #0:  (&sb->s_type->i_mutex_key#12){+.+.+.}, at: [<ffffffff810e2678>] vfs_setxattr+0x78/0xc0
      [  990.013233]  #1:  (&REISERFS_I(inode)->i_xattr_sem){+.+.+.}, at: [<ffffffff8115899a>] reiserfs_xattr_set_handle+0x8a/0x470
      [  990.013233]
      [  990.013233] stack backtrace:
      [  990.013233] Pid: 1891, comm: dbench Not tainted 2.6.33-rc1 #1
      [  990.013233] Call Trace:
      [  990.013233]  [<ffffffff81061639>] print_circular_bug+0xe9/0xf0
      [  990.013233]  [<ffffffff81063e30>] __lock_acquire+0x12d0/0x1560
      [  990.013233]  [<ffffffff8115899a>] ? reiserfs_xattr_set_handle+0x8a/0x470
      [  990.013233]  [<ffffffff8106414f>] lock_acquire+0x8f/0xb0
      [  990.013233]  [<ffffffff81159505>] ? reiserfs_write_lock+0x35/0x50
      [  990.013233]  [<ffffffff8115899a>] ? reiserfs_xattr_set_handle+0x8a/0x470
      [  990.013233]  [<ffffffff814aba77>] __mutex_lock_common+0x47/0x3b0
      [  990.013233]  [<ffffffff81159505>] ? reiserfs_write_lock+0x35/0x50
      [  990.013233]  [<ffffffff81159505>] ? reiserfs_write_lock+0x35/0x50
      [  990.013233]  [<ffffffff81062592>] ? mark_held_locks+0x72/0xa0
      [  990.013233]  [<ffffffff814ab81d>] ? __mutex_unlock_slowpath+0xbd/0x140
      [  990.013233]  [<ffffffff810628ad>] ? trace_hardirqs_on_caller+0x14d/0x1a0
      [  990.013233]  [<ffffffff814abebe>] mutex_lock_nested+0x3e/0x50
      [  990.013233]  [<ffffffff81159505>] reiserfs_write_lock+0x35/0x50
      [  990.013233]  [<ffffffff811340e5>] reiserfs_prepare_write+0x45/0x180
      [  990.013233]  [<ffffffff81158bb6>] reiserfs_xattr_set_handle+0x2a6/0x470
      [  990.013233]  [<ffffffff81158e30>] reiserfs_xattr_set+0xb0/0x150
      [  990.013233]  [<ffffffff814abcb4>] ? __mutex_lock_common+0x284/0x3b0
      [  990.013233]  [<ffffffff8115a6aa>] user_set+0x8a/0x90
      [  990.013233]  [<ffffffff8115901a>] reiserfs_setxattr+0xaa/0xb0
      [  990.013233]  [<ffffffff810e2596>] __vfs_setxattr_noperm+0x36/0xa0
      [  990.013233]  [<ffffffff810e26bc>] vfs_setxattr+0xbc/0xc0
      [  990.013233]  [<ffffffff810e2780>] setxattr+0xc0/0x150
      [  990.013233]  [<ffffffff81056018>] ? sched_clock_cpu+0xb8/0x100
      [  990.013233]  [<ffffffff8105eded>] ? trace_hardirqs_off+0xd/0x10
      [  990.013233]  [<ffffffff810560a3>] ? cpu_clock+0x43/0x50
      [  990.013233]  [<ffffffff810c6820>] ? fget+0xb0/0x110
      [  990.013233]  [<ffffffff810c6770>] ? fget+0x0/0x110
      [  990.013233]  [<ffffffff81002ddc>] ? sysret_check+0x27/0x62
      [  990.013233]  [<ffffffff810e289d>] sys_fsetxattr+0x8d/0xa0
      [  990.013233]  [<ffffffff81002dab>] system_call_fastpath+0x16/0x1b
      Reported-and-tested-by: default avatarChristian Kujau <[email protected]>
      Signed-off-by: default avatarFrederic Weisbecker <[email protected]>
      Cc: Alexander Beregalov <[email protected]>
      Cc: Chris Mason <[email protected]>
      Cc: Ingo Molnar <[email protected]>
      0719d343
  3. 01 Jan, 2010 2 commits
  4. 31 Dec, 2009 13 commits
  5. 30 Dec, 2009 10 commits