| commit | 0c5ceff2867c71bf573ba43090853e2819c0e60d | |
| author | Matthew Dillon <dillon@apollo.backplane.com> | |
| Wed, 18 Oct 2017 06:36:40 +0000 (17 23:36 -0700) | ||
| committer | Matthew Dillon <dillon@apollo.backplane.com> | |
| Wed, 18 Oct 2017 06:39:40 +0000 (17 23:39 -0700) | ||
| tree | 0fad2886b28f45529e8e85fb9e02df11caa58fd9 | treesnapshot (tar.gz zip) |
| parent | 9967a09040ccea03df5d78df68902e6bf53c0528 | commitdiff |
kernel - Add D_QUICK device flag
* Add the D_QUICK device flag. This flag tells devfs that it does not
have to handle complex opencount interactions in VOP_OPEN and
VOP_CLOSE, allowing devfs to retain the shared lock for those
operations.
* Flag kernel special devices such as /dev/zero, /dev/null,
/dev/urandom, etc, with D_QUICK.
* Add the D_QUICK device flag. This flag tells devfs that it does not
have to handle complex opencount interactions in VOP_OPEN and
VOP_CLOSE, allowing devfs to retain the shared lock for those
operations.
* Flag kernel special devices such as /dev/zero, /dev/null,
/dev/urandom, etc, with D_QUICK.
| sys/kern/kern_memio.c | diffblobblamehistory | |
| sys/sys/device.h | diffblobblamehistory |