| commit | d34b92aff64e5c0f283d9da3a2aa6803b08bd5a2 | |
| author | Matthew Dillon <dillon@apollo.backplane.com> | |
| Sat, 28 Feb 2015 07:28:42 +0000 (27 23:28 -0800) | ||
| committer | Matthew Dillon <dillon@apollo.backplane.com> | |
| Sat, 28 Feb 2015 07:29:48 +0000 (27 23:29 -0800) | ||
| tree | c0471375649a444af6c29d9d668cc1712b87fb8f | treesnapshot (tar.gz zip) |
| parent | 1e271b664a4b7cfa1a7d41bef5b2018b2e842d0a | commitdiff |
xdisk - disk_setdiskinfo() must be assynchronous
* Allow CMD_BUF_READ operations without the device having to be open.
This allows disk probes to occur.
* Use disk_setdiskinfo(), which is asynchronous, to avoid an I/O deadlock
because the call is made from the rxmsg loop. If it were to issue I/O
synchronously we would deadlock and never process the reply.
* Allow CMD_BUF_READ operations without the device having to be open.
This allows disk probes to occur.
* Use disk_setdiskinfo(), which is asynchronous, to avoid an I/O deadlock
because the call is made from the rxmsg loop. If it were to issue I/O
synchronously we would deadlock and never process the reply.
| sys/dev/disk/xdisk/xdisk.c | diffblobblamehistory | |
| sys/kern/subr_diskiocom.c | diffblobblamehistory |