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| author | kib <kib@FreeBSD.org> | 2013-03-27 11:34:27 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2013-03-27 11:34:27 +0000 |
| commit | 448e7c12908c8a8680ec5f93934de43b8ad1a06f (patch) | |
| tree | 036654e19fbde1423bfd8d644566101fc38a8e7b /sys/sys/conf.h | |
| parent | df3795022f641dd4da863c0f0ff258a789720c23 (diff) | |
| download | FreeBSD-src-448e7c12908c8a8680ec5f93934de43b8ad1a06f.zip FreeBSD-src-448e7c12908c8a8680ec5f93934de43b8ad1a06f.tar.gz | |
Add dev_strategy_csw() function, which is similar to dev_strategy()
but assumes that a thread reference was already obtained on the passed
device. Use the function from physio(), to avoid two extra dev_mtx
lock and unlock. Note that physio() is always used as the cdevsw
method, or is called from a cdevsw method, and the caller already owns
the reference.
dev_strategy() is left to keep KPI intact, but now it is implemented
as a wrapper around dev_strategy_csw().
Do some style cleanup in physio().
Requested and reviewed by: kan (previous version)
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Diffstat (limited to 'sys/sys/conf.h')
| -rw-r--r-- | sys/sys/conf.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/sys/conf.h b/sys/sys/conf.h index 8d53839..5a579b4 100644 --- a/sys/sys/conf.h +++ b/sys/sys/conf.h @@ -255,6 +255,7 @@ void dev_ref(struct cdev *dev); void dev_refl(struct cdev *dev); void dev_rel(struct cdev *dev); void dev_strategy(struct cdev *dev, struct buf *bp); +void dev_strategy_csw(struct cdev *dev, struct cdevsw *csw, struct buf *bp); struct cdev *make_dev(struct cdevsw *_devsw, int _unit, uid_t _uid, gid_t _gid, int _perms, const char *_fmt, ...) __printflike(6, 7); struct cdev *make_dev_cred(struct cdevsw *_devsw, int _unit, |
