From mboxrd@z Thu Jan 1 00:00:00 1970 From: Cesar Eduardo Barros Subject: Dirtiable inode bdi default != sb bdi btrfs Date: Wed, 22 Sep 2010 21:54:30 -0300 Message-ID: <4C9AA546.6050201@cesarb.net> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: Jan Kara , Jens Axboe , Chris Mason , linux-btrfs@vger.kernel.org, Alexander Viro , linux-fsdevel@vger.kernel.org To: linux-kernel@vger.kernel.org Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org This started appearing for me on v2.6.36-rc5-49-gc79bd89; it did not happen on v2.6.36-rc5-33-g1ce1e41, probably because it does not have commit 692ebd17c2905313fff3c504c249c6a0faad16ec which introduces the warning. [...] device fsid 44d595920ddedfa-3ece6b56e80f689e devid 1 transid 22342 /dev/mapper/vg_cesarbinspiro-lv_home SELinux: initialized (dev dm-3, type btrfs), uses xattr ------------[ cut here ]------------ WARNING: at fs/fs-writeback.c:87 inode_to_bdi+0x62/0x6d() Hardware name: Inspiron N4010 Dirtiable inode bdi default != sb bdi btrfs Modules linked in: ipv6 kvm_intel kvm uinput arc4 ecb snd_hda_codec_intelhdmi snd_hda_codec_realtek iwlagn snd_hda_intel iwlcore snd_hda_codec uvcvideo snd_hwdep mac80211 videodev snd_seq snd_seq_device v4l1_compat snd_pcm atl1c v4l2_compat_ioctl32 btusb cfg80211 snd_timer i2c_i801 bluetooth iTCO_wdt dell_wmi dell_laptop snd pcspkr wmi dcdbas shpchp iTCO_vendor_support soundcore snd_page_alloc rfkill joydev microcode btrfs zlib_deflate libcrc32c cryptd aes_x86_64 aes_generic xts gf128mul dm_crypt usb_storage i915 drm_kms_helper drm i2c_algo_bit i2c_core video output [last unloaded: scsi_wait_scan] Pid: 1073, comm: find Not tainted 2.6.36-rc5+ #8 Call Trace: [] warn_slowpath_common+0x85/0x9d [] warn_slowpath_fmt+0x46/0x48 [] inode_to_bdi+0x62/0x6d [] __mark_inode_dirty+0xd0/0x177 [] touch_atime+0x107/0x12a [] ? filldir+0x0/0xd0 [] vfs_readdir+0x8d/0xb4 [] sys_getdents+0x81/0xd1 [] system_call_fastpath+0x16/0x1b ---[ end trace 8907b335812c497b ]--- ------------[ cut here ]------------ WARNING: at fs/fs-writeback.c:87 inode_to_bdi+0x62/0x6d() Hardware name: Inspiron N4010 Dirtiable inode bdi default != sb bdi btrfs Modules linked in: ipv6 kvm_intel kvm uinput arc4 ecb snd_hda_codec_intelhdmi snd_hda_codec_realtek iwlagn snd_hda_intel iwlcore snd_hda_codec uvcvideo snd_hwdep mac80211 videodev snd_seq snd_seq_device v4l1_compat snd_pcm atl1c v4l2_compat_ioctl32 btusb cfg80211 snd_timer i2c_i801 bluetooth iTCO_wdt dell_wmi dell_laptop snd pcspkr wmi dcdbas shpchp iTCO_vendor_support soundcore snd_page_alloc rfkill joydev microcode btrfs zlib_deflate libcrc32c cryptd aes_x86_64 aes_generic xts gf128mul dm_crypt usb_storage i915 drm_kms_helper drm i2c_algo_bit i2c_core video output [last unloaded: scsi_wait_scan] Pid: 1073, comm: find Tainted: G W 2.6.36-rc5+ #8 Call Trace: [] warn_slowpath_common+0x85/0x9d [] warn_slowpath_fmt+0x46/0x48 [] inode_to_bdi+0x62/0x6d [] __mark_inode_dirty+0xd0/0x177 [] touch_atime+0x107/0x12a [] ? filldir+0x0/0xd0 [] vfs_readdir+0x8d/0xb4 [] sys_getdents+0x81/0xd1 [] system_call_fastpath+0x16/0x1b ---[ end trace 8907b335812c497c ]--- [...] These are only the first two; they keep happening, with several different processes (it is not only find), but always btrfs (I have / and /home on btrfs and /boot on ext4). In case it makes any difference, /dev seems to be on devtmpfs, and everything uses relatime. There is also the following one which is not on vfs_readdir: ------------[ cut here ]------------ WARNING: at fs/fs-writeback.c:87 inode_to_bdi+0x62/0x6d() Hardware name: Inspiron N4010 Dirtiable inode bdi default != sb bdi btrfs Modules linked in: ipv6 kvm_intel kvm uinput arc4 ecb snd_hda_codec_intelhdmi snd_hda_codec_realtek iwlagn snd_hda_intel iwlcore snd_hda_codec uvcvideo snd_hwdep mac80211 videodev snd_seq snd_seq_device v4l1_compat snd_pcm atl1c v4l2_compat_ioctl32 btusb cfg80211 snd_timer i2c_i801 bluetooth iTCO_wdt dell_wmi dell_laptop snd pcspkr wmi dcdbas shpchp iTCO_vendor_support soundcore snd_page_alloc rfkill joydev microcode btrfs zlib_deflate libcrc32c cryptd aes_x86_64 aes_generic xts gf128mul dm_crypt usb_storage i915 drm_kms_helper drm i2c_algo_bit i2c_core video output [last unloaded: scsi_wait_scan] Pid: 1104, comm: mkdir Tainted: G W 2.6.36-rc5+ #8 Call Trace: [] warn_slowpath_common+0x85/0x9d [] warn_slowpath_fmt+0x46/0x48 [] inode_to_bdi+0x62/0x6d [] __mark_inode_dirty+0xd0/0x177 [] btrfs_setattr+0x210/0x23a [btrfs] [] notify_change+0x1a2/0x29d [] sys_fchmod+0xac/0xfd [] ? sys_newfstat+0x2e/0x39 [] system_call_fastpath+0x16/0x1b ---[ end trace 8907b335812c498d ]--- -- Cesar Eduardo Barros cesarb@cesarb.net cesar.barros@gmail.com