Excerpts from Arne Jansen's message of 2011-07-21 01:46:55 -0400: > On 21.07.2011 02:48, Tsutomu Itoh wrote: > > (2011/07/21 2:21), Chris Mason wrote: > >> Excerpts from Chris Mason's message of 2011-07-19 13:30:22 -0400: > >>> Hi everyone, > >>> > >>> I've pushed out a new integration-test branch, and it includes a new > >>> reader/writer locking scheme for the btree locks. > >>> > >>> We've seen a number of benchmarks dominated by contention on the root > >>> node lock. This changes our locks into a simple reader/writer lock. > >>> They are based on mutexes so that we still take advantage of the mutex > >>> adaptive spins for write locks (rwsemaphores were much slower). > >>> > >>> I'm also sending the individual commits, please do take a look. > >> > >> Hi everyone, > >> > >> I just rebased Josef's enospc fixes into integration-test, it should fix > >> the warnings in extent-tree.c > >> > > > > Unfortunately, I got the following messages. > > > > > > Jul 21 09:41:22 luna kernel: ------------[ cut here ]------------ > > Jul 21 09:41:22 luna kernel: WARNING: at fs/btrfs/extent-tree.c:5564 btrfs_alloc_reserved_file_extent+0xf8/0x100 [btrfs]() > > Jul 21 09:41:22 luna kernel: Hardware name: PRIMERGY > > Jul 21 09:41:22 luna kernel: Modules linked in: btrfs zlib_deflate crc32c libcrc32c autofs4 sunrpc 8021q garp stp llc cpufreq_ondemand acpi_cpufreq freq_table mperf ipv6 ext3 jbd dm_mirror dm_region_hash dm_log dm_mod kvm uinput ppdev parport_pc parport sg pcspkr i2c_i801 i2c_core iTCO_wdt iTCO_vendor_support tg3 shpchp pci_hotplug i3000_edac edac_core ext4 mbcache jbd2 crc16 sd_mod crc_t10dif sr_mod cdrom megaraid_sas floppy pata_acpi ata_generic ata_piix libata scsi_mod [last unloaded: microcode] > > Jul 21 09:41:22 luna kernel: Pid: 5517, comm: btrfs-endio-wri Tainted: G W 2.6.39btrfs-tc1+ #1 > > Jul 21 09:41:22 luna kernel: Call Trace: > > Jul 21 09:41:22 luna kernel: [<ffffffff8106004f>] warn_slowpath_common+0x7f/0xc0 > > Jul 21 09:41:22 luna kernel: [<ffffffff810600aa>] warn_slowpath_null+0x1a/0x20 > > Jul 21 09:41:22 luna kernel: [<ffffffffa044a068>] btrfs_alloc_reserved_file_extent+0xf8/0x100 [btrfs] > > Jul 21 09:41:22 luna kernel: [<ffffffffa0464121>] insert_reserved_file_extent.clone.0+0x201/0x270 [btrfs] > > Jul 21 09:41:22 luna kernel: [<ffffffffa0468c0b>] btrfs_finish_ordered_io+0x2eb/0x360 [btrfs] > > Jul 21 09:41:22 luna kernel: [<ffffffff8106fe23>] ? try_to_del_timer_sync+0x83/0xe0 > > Jul 21 09:41:22 luna kernel: [<ffffffffa0468cd0>] btrfs_writepage_end_io_hook+0x50/0xa0 [btrfs] > > Jul 21 09:41:22 luna kernel: [<ffffffffa049a3c6>] end_compressed_bio_write+0x86/0xf0 [btrfs] > > Jul 21 09:41:22 luna kernel: [<ffffffff8117f96d>] bio_endio+0x1d/0x40 > > Jul 21 09:41:22 luna kernel: [<ffffffffa0459d84>] end_workqueue_fn+0xf4/0x130 [btrfs] > > Jul 21 09:41:22 luna kernel: [<ffffffffa048841e>] worker_loop+0x13e/0x540 [btrfs] > > Jul 21 09:41:22 luna kernel: [<ffffffffa04882e0>] ? btrfs_queue_worker+0x2d0/0x2d0 [btrfs] > > Jul 21 09:41:22 luna kernel: [<ffffffffa04882e0>] ? btrfs_queue_worker+0x2d0/0x2d0 [btrfs] > > Jul 21 09:41:22 luna kernel: [<ffffffff81081756>] kthread+0x96/0xa0 > > Jul 21 09:41:22 luna kernel: [<ffffffff81486004>] kernel_thread_helper+0x4/0x10 > > Jul 21 09:41:22 luna kernel: [<ffffffff810816c0>] ? kthread_worker_fn+0x1a0/0x1a0 > > Jul 21 09:41:22 luna kernel: [<ffffffff81486000>] ? gs_change+0x13/0x13 > > Jul 21 09:41:22 luna kernel: ---[ end trace 02c1fa3044677043 ]--- > > > > a very similar warning here, but without compression involved: Ok, these are probably the enospc fixes. Could you please try bisecting out some of Josef's patches? -chris -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
