Displaying 3 results from an estimated 3 matches for "sync_page_killable".
2010 Mar 29
0
Interesting lockdep message coming out of blktap
...t;] ? __down_read+0x38/0xad
[<ffffffff812802d0>] ? evtchn_interrupt+0xaa/0x112
[<ffffffff8128a0de>] blktap_device_do_request+0x1dc/0x298
[<ffffffff814e9bac>] ? _spin_unlock_irqrestore+0x56/0x74
[<ffffffff8105848b>] ? del_timer+0xd7/0xe5
[<ffffffff810bf104>] ? sync_page_killable+0x0/0x30
[<ffffffff81202143>] __generic_unplug_device+0x30/0x35
[<ffffffff81202171>] generic_unplug_device+0x29/0x3a
[<ffffffff811fb5dc>] blk_unplug+0x71/0x76
[<ffffffff811fb5ee>] blk_backing_dev_unplug+0xd/0xf
[<ffffffff8111a1ad>] block_sync_page+0x42/0x44...
2010 Oct 11
4
Horrible btrfs performance on cold cache
...ome:
encrypted ext4: ~20s
btrfs: ~2:11s
I have tried different things to find out exactly what is the issue,
but haven''t quite found it yet.
Here''s some stuff I got from latencytop, not sure if would be helpful:
4969.1ms
sys_mmap_pgoff
syscall_call
(chrome)
1139.9ms
sync_page
sync_page_killable
__lock_page_killable
generic_file_aio_read
do_sync_read
vfs_read
sys_read
sysenter_do_call
(chrome)
431.9ms
sync_page
wait_on_page_bit
read_extent_buffer_pages
btree_read_extent_buffer_pages
read_tree_block
read_block_for_search
btrfs_search_slot
lookup_inline_extent_backref
__btrfs_free_extent
ru...
2010 Jan 28
31
[PATCH 0 of 4] aio event fd support to blktap2
Get blktap2 running on pvops.
This mainly adds eventfd support to the userland code. Based on some
prior cleanup to tapdisk-queue and the server object. We had most of
that in XenServer for a while, so I kept it stacked.
1. Clean up IPC and AIO init in tapdisk-server.
[I think tapdisk-ipc in blktap2 is basically obsolete.
Pending a later patch to remove it?]
2. Split tapdisk-queue into