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| author | jeff <jeff@FreeBSD.org> | 2013-05-31 00:43:41 +0000 |
|---|---|---|
| committer | jeff <jeff@FreeBSD.org> | 2013-05-31 00:43:41 +0000 |
| commit | d7efebc4db8c1b875c915fb1a2759cb9df4f2956 (patch) | |
| tree | 47c74a9a8f1d3fbea9e54f402b3cf363e92546a4 /sys/sys/bufobj.h | |
| parent | 7c988b2ec361d43cc84f05e89080a923a7101a76 (diff) | |
| download | FreeBSD-src-d7efebc4db8c1b875c915fb1a2759cb9df4f2956.zip FreeBSD-src-d7efebc4db8c1b875c915fb1a2759cb9df4f2956.tar.gz | |
- Convert the bufobj lock to rwlock.
- Use a shared bufobj lock in getblk() and inmem().
- Convert softdep's lk to rwlock to match the bufobj lock.
- Move INFREECNT to b_flags and protect it with the buf lock.
- Remove unnecessary locking around bremfree() and BKGRDINPROG.
Sponsored by: EMC / Isilon Storage Division
Discussed with: mckusick, kib, mdf
Diffstat (limited to 'sys/sys/bufobj.h')
| -rw-r--r-- | sys/sys/bufobj.h | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/sys/sys/bufobj.h b/sys/sys/bufobj.h index ca2a2bc..44a4f70 100644 --- a/sys/sys/bufobj.h +++ b/sys/sys/bufobj.h @@ -53,7 +53,7 @@ #include <sys/queue.h> #include <sys/_lock.h> -#include <sys/_mutex.h> +#include <sys/_rwlock.h> #include <sys/_pctrie.h> struct bufobj; @@ -89,7 +89,7 @@ struct buf_ops { #define BO_BDFLUSH(bo, bp) ((bo)->bo_ops->bop_bdflush((bo), (bp))) struct bufobj { - struct mtx bo_mtx; /* Mutex which protects "i" things */ + struct rwlock bo_lock; /* Lock which protects "i" things */ struct buf_ops *bo_ops; /* - Buffer operations */ struct vm_object *bo_object; /* v Place to store VM object */ LIST_ENTRY(bufobj) bo_synclist; /* S dirty vnode list */ @@ -113,11 +113,14 @@ struct bufobj { #define BO_ONWORKLST (1 << 0) /* On syncer work-list */ #define BO_WWAIT (1 << 1) /* Wait for output to complete */ -#define BO_MTX(bo) (&(bo)->bo_mtx) -#define BO_LOCK(bo) mtx_lock(BO_MTX((bo))) -#define BO_UNLOCK(bo) mtx_unlock(BO_MTX((bo))) -#define ASSERT_BO_LOCKED(bo) mtx_assert(BO_MTX((bo)), MA_OWNED) -#define ASSERT_BO_UNLOCKED(bo) mtx_assert(BO_MTX((bo)), MA_NOTOWNED) +#define BO_LOCKPTR(bo) (&(bo)->bo_lock) +#define BO_LOCK(bo) rw_wlock(BO_LOCKPTR((bo))) +#define BO_UNLOCK(bo) rw_wunlock(BO_LOCKPTR((bo))) +#define BO_RLOCK(bo) rw_rlock(BO_LOCKPTR((bo))) +#define BO_RUNLOCK(bo) rw_runlock(BO_LOCKPTR((bo))) +#define ASSERT_BO_WLOCKED(bo) rw_assert(BO_LOCKPTR((bo)), RA_WLOCKED) +#define ASSERT_BO_LOCKED(bo) rw_assert(BO_LOCKPTR((bo)), RA_LOCKED) +#define ASSERT_BO_UNLOCKED(bo) rw_assert(BO_LOCKPTR((bo)), RA_UNLOCKED) void bufobj_wdrop(struct bufobj *bo); void bufobj_wref(struct bufobj *bo); |
