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Do not exit ctl_be_block_worker() prematurely.

Browse source 
Return while there are any I/Os in a queue may result in them stuck
indefinitely, since there is only one taskqueue task for all of them.
I think I've reproduced this by switching ha_role to secondary under
heavy load.

MFC after:	3 days

(cherry picked from commit 6ed39db257)
This commit is contained in:
Alexander Motin 2021-03-05 22:39:52 -05:00
parent 832d0719d6
commit a3d416f3da
1 changed files with 4 additions and 4 deletions
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8
sys/cam/ctl/ctl_backend_block.c
View file

@ -1705,7 +1705,7 @@ ctl_be_block_worker(void *context, int pending)
if (cbe_lun->flags & CTL_LUN_FLAG_NO_MEDIA) {
ctl_set_busy(&io->scsiio);
ctl_complete_beio(beio);
return;
continue;
}
be_lun->dispatch(be_lun, beio);
continue;
@ -1719,7 +1719,7 @@ ctl_be_block_worker(void *context, int pending)
if (cbe_lun->flags & CTL_LUN_FLAG_NO_MEDIA) {
ctl_set_busy(&io->scsiio);
ctl_config_write_done(io);
return;
continue;
}
ctl_be_block_cw_dispatch(be_lun, io);
continue;
@ -1733,7 +1733,7 @@ ctl_be_block_worker(void *context, int pending)
if (cbe_lun->flags & CTL_LUN_FLAG_NO_MEDIA) {
ctl_set_busy(&io->scsiio);
ctl_config_read_done(io);
return;
continue;
}
ctl_be_block_cr_dispatch(be_lun, io);
continue;
@ -1747,7 +1747,7 @@ ctl_be_block_worker(void *context, int pending)
if (cbe_lun->flags & CTL_LUN_FLAG_NO_MEDIA) {
ctl_set_busy(&io->scsiio);
ctl_data_submit_done(io);
return;
continue;
}
ctl_be_block_dispatch(be_lun, io);
continue;