search for: sleep_on_buffer

Displaying 4 results from an estimated 4 matches for "sleep_on_buffer".

2003 Jan 18
2
[patch 2.4] Fix ext3 scheduling storm and lockup
...m.patch Anyone who is using tasks which have realtime scheduling policy on ext3 systems should apply this change. Details: At the start of do_get_write_access() we have this logic: repeat: lock_buffer(jh->bh); ... unlock_buffer(jh->bh); ... if (jh->j_list == BJ_Shadow) { sleep_on_buffer(jh->bh); goto repeat; } The problem is that the unlock_buffer() will wake up anyone who is sleeping in the sleep_on_buffer(). So if task A is asleep in sleep_on_buffer() and task B now runs do_get_write_access(), task B will wake task A by accident. Task B will then sleep on the buffer a...
2016 Apr 19
0
Bug#820862: AW: Bug#820862: Acknowledgement (xen-hypervisor-4.4-amd64: Xen VM on Jessie freezes often with INFO: task jbd2/xvda2-8:111 blocked for more than 120 seconds)
...0 [ 1920.052179] 0000000000000002 ffffffff811d7620 ffff8800047ebc80 ffff880002a5c7c0 [ 1920.052187] Call Trace: [ 1920.052199] [<ffffffff811d7620>] ? generic_block_bmap+0x50/0x50 [ 1920.052208] [<ffffffff815114a9>] ? io_schedule+0x99/0x120 [ 1920.052214] [<ffffffff811d762a>] ? sleep_on_buffer+0xa/0x10 [ 1920.052220] [<ffffffff8151182c>] ? __wait_on_bit+0x5c/0x90 [ 1920.052226] [<ffffffff811d7620>] ? generic_block_bmap+0x50/0x50 [ 1920.052232] [<ffffffff815118d7>] ? out_of_line_wait_on_bit+0x77/0x90 [ 1920.052241] [<ffffffff810a7e90>] ? autoremove_wake_functio...
2012 May 14
0
Weird problem with rsync 3.0.9
...>] ? scsi_request_fn+0x31e/0x3f7 [ 4660.188511] [<ffffffff8114d20e>] ? blk_queue_bio+0x273/0x28c [ 4660.188515] [<ffffffff810cc6ba>] ? unmap_underlying_metadata+0x29/0x29 [ 4660.188520] [<ffffffff8133367e>] ? io_schedule+0x89/0xc9 [ 4660.188523] [<ffffffff810cc6c3>] ? sleep_on_buffer+0x9/0xe [ 4660.188526] [<ffffffff81333a42>] ? __wait_on_bit+0x41/0x70 [ 4660.188529] [<ffffffff810cc6ba>] ? unmap_underlying_metadata+0x29/0x29 [ 4660.188533] [<ffffffff81333adc>] ? out_of_line_wait_on_bit+0x6b/0x77 [ 4660.188537] [<ffffffff81043413>] ? autoremove_wake_f...
2016 Apr 13
3
Bug#820862: xen-hypervisor-4.4-amd64: Xen VM on Jessie freezes often with INFO: task jbd2/xvda2-8:111 blocked for more than 120 seconds
...09158 [ 1080.060174] 0000000000000002 ffffffff811d7620 ffff88000367bc70 ffff8800042933a8 [ 1080.060182] Call Trace: [ 1080.060194] [<ffffffff811d7620>] ? generic_block_bmap+0x50/0x50 [ 1080.060203] [<ffffffff815114a9>] ? io_schedule+0x99/0x120 [ 1080.060209] [<ffffffff811d762a>] ? sleep_on_buffer+0xa/0x10 [ 1080.060215] [<ffffffff8151182c>] ? __wait_on_bit+0x5c/0x90 [ 1080.060223] [<ffffffff811d7620>] ? generic_block_bmap+0x50/0x50 [ 1080.060227] [<ffffffff815118d7>] ? out_of_line_wait_on_bit+0x77/0x90 [ 1080.060233] [<ffffffff810a7e90>] ? autoremove_wake_function+0x...