svn commit: r284211 - in head/sys: kern sys
Gleb Smirnoff
glebius at FreeBSD.org
Wed Jun 10 15:44:56 UTC 2015
On Wed, Jun 10, 2015 at 09:34:51AM +0000, Mateusz Guzik wrote:
M> Author: mjg
M> Date: Wed Jun 10 09:34:50 2015
M> New Revision: 284211
M> URL: https://svnweb.freebsd.org/changeset/base/284211
M>
M> Log:
M> fd: use atomics to manage fd_refcnt and fd_holcnt
M>
M> This gets rid of fdesc_mtx.
..
M> Modified: head/sys/sys/filedesc.h
M> ==============================================================================
M> --- head/sys/sys/filedesc.h Wed Jun 10 05:39:48 2015 (r284210)
M> +++ head/sys/sys/filedesc.h Wed Jun 10 09:34:50 2015 (r284211)
M> @@ -83,8 +83,8 @@ struct filedesc {
M> int fd_lastfile; /* high-water mark of fd_ofiles */
M> int fd_freefile; /* approx. next free file */
M> u_short fd_cmask; /* mask for file creation */
M> - u_short fd_refcnt; /* thread reference count */
M> - u_short fd_holdcnt; /* hold count on structure + mutex */
M> + int fd_refcnt; /* thread reference count */
M> + int fd_holdcnt; /* hold count on structure + mutex */
M> struct sx fd_sx; /* protects members of this struct */
M> struct kqlist fd_kqlist; /* list of kqueues on this filedesc */
M> int fd_holdleaderscount; /* block fdfree() for shared close() */
Shouldn't they be volatile u_int?
--
Totus tuus, Glebius.
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