Milosz Tanski 9776de96e5 FS-Cache: Timeout for releasepage() ... This is meant to avoid a recusive hang caused by underlying filesystem trying to grab a free page and causing a write-out. INFO: task kworker/u30:7:28375 blocked for more than 120 seconds. Not tainted 3.15.0-virtual #74 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u30:7 D 0000000000000000 0 28375 2 0x00000000 Workqueue: fscache_operation fscache_op_work_func [fscache] ffff88000b147148 0000000000000046 0000000000000000 ffff88000b1471c8 ffff8807aa031820 0000000000014040 ffff88000b147fd8 0000000000014040 ffff880f0c50c860 ffff8807aa031820 ffff88000b147158 ffff88007be59cd0 Call Trace: [<ffffffff815930e9>] schedule+0x29/0x70 [<ffffffffa018bed5>] __fscache_wait_on_page_write+0x55/0x90 [fscache] [<ffffffff810a4350>] ? __wake_up_sync+0x20/0x20 [<ffffffffa018c135>] __fscache_maybe_release_page+0x65/0x1e0 [fscache] [<ffffffffa02ad813>] ceph_releasepage+0x83/0x100 [ceph] [<ffffffff811635b0>] ? anon_vma_fork+0x130/0x130 [<ffffffff8112cdd2>] try_to_release_page+0x32/0x50 [<ffffffff81140096>] shrink_page_list+0x7e6/0x9d0 [<ffffffff8113f278>] ? isolate_lru_pages.isra.73+0x78/0x1e0 [<ffffffff81140932>] shrink_inactive_list+0x252/0x4c0 [<ffffffff811412b1>] shrink_lruvec+0x3e1/0x670 [<ffffffff8114157f>] shrink_zone+0x3f/0x110 [<ffffffff81141b06>] do_try_to_free_pages+0x1d6/0x450 [<ffffffff8114a939>] ? zone_statistics+0x99/0xc0 [<ffffffff81141e44>] try_to_free_pages+0xc4/0x180 [<ffffffff81136982>] __alloc_pages_nodemask+0x6b2/0xa60 [<ffffffff811c1d4e>] ? __find_get_block+0xbe/0x250 [<ffffffff810a405e>] ? wake_up_bit+0x2e/0x40 [<ffffffff811740c3>] alloc_pages_current+0xb3/0x180 [<ffffffff8112cf07>] __page_cache_alloc+0xb7/0xd0 [<ffffffff8112da6c>] grab_cache_page_write_begin+0x7c/0xe0 [<ffffffff81214072>] ? ext4_mark_inode_dirty+0x82/0x220 [<ffffffff81214a89>] ext4_da_write_begin+0x89/0x2d0 [<ffffffff8112c6ee>] generic_perform_write+0xbe/0x1d0 [<ffffffff811a96b1>] ? update_time+0x81/0xc0 [<ffffffff811ad4c2>] ? mnt_clone_write+0x12/0x30 [<ffffffff8112e80e>] __generic_file_aio_write+0x1ce/0x3f0 [<ffffffff8112ea8e>] generic_file_aio_write+0x5e/0xe0 [<ffffffff8120b94f>] ext4_file_write+0x9f/0x410 [<ffffffff8120af56>] ? ext4_file_open+0x66/0x180 [<ffffffff8118f0da>] do_sync_write+0x5a/0x90 [<ffffffffa025c6c9>] cachefiles_write_page+0x149/0x430 [cachefiles] [<ffffffff812cf439>] ? radix_tree_gang_lookup_tag+0x89/0xd0 [<ffffffffa018c512>] fscache_write_op+0x222/0x3b0 [fscache] [<ffffffffa018b35a>] fscache_op_work_func+0x3a/0x100 [fscache] [<ffffffff8107bfe9>] process_one_work+0x179/0x4a0 [<ffffffff8107d47b>] worker_thread+0x11b/0x370 [<ffffffff8107d360>] ? manage_workers.isra.21+0x2e0/0x2e0 [<ffffffff81083d69>] kthread+0xc9/0xe0 [<ffffffff81010000>] ? ftrace_raw_event_xen_mmu_release_ptpage+0x70/0x90 [<ffffffff81083ca0>] ? flush_kthread_worker+0xb0/0xb0 [<ffffffff8159eefc>] ret_from_fork+0x7c/0xb0 [<ffffffff81083ca0>] ? flush_kthread_worker+0xb0/0xb0 Signed-off-by: Milosz Tanski <milosz@adfin.com> Signed-off-by: David Howells <dhowells@redhat.com>		2014-08-27 15:24:06 +01:00
..
cache.c	fs/fscache: convert printk to pr_foo()	2014-06-04 16:53:51 -07:00
cookie.c	sched: Remove proliferation of wait_on_bit() action functions	2014-07-16 15:10:39 +02:00
fsdef.c	FS-Cache: Provide the ability to enable/disable cookies	2013-09-27 18:40:25 +01:00
histogram.c	fs/fscache: replace seq_printf by seq_puts	2014-06-04 16:53:52 -07:00
internal.h	sched: Remove proliferation of wait_on_bit() action functions	2014-07-16 15:10:39 +02:00
Kconfig	fscache: drop references to slow-work	2010-07-22 22:58:58 +02:00
main.c	fs/fscache: make ctl_table static	2014-08-06 18:01:12 -07:00
Makefile	FS-Cache: Allow the current state of all objects to be dumped	2009-11-19 18:11:04 +00:00
netfs.c	fs/fscache: convert printk to pr_foo()	2014-06-04 16:53:51 -07:00
object-list.c	fs/fscache: replace seq_printf by seq_puts	2014-06-04 16:53:52 -07:00
object.c	FS-Cache: Handle removal of unadded object to the fscache_object_list rb tree	2014-02-17 13:47:35 -08:00
operation.c	fs/fscache: convert printk to pr_foo()	2014-06-04 16:53:51 -07:00
page.c	FS-Cache: Timeout for releasepage()	2014-08-27 15:24:06 +01:00
proc.c	FS-Cache: Allow the current state of all objects to be dumped	2009-11-19 18:11:04 +00:00
stats.c	fs/fscache/stats.c: fix memory leak	2013-04-29 15:54:27 -07:00