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Relax the vnode locking for read only operations.

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This commit is contained in:
dyson 1997-10-06 02:38:30 +00:00
parent a96b1911b8
commit df56983676
2 changed files with 6 additions and 5 deletions
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6
sys/kern/vfs_vnops.c
View File

@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)vfs_vnops.c 8.2 (Berkeley) 1/21/94
* $Id: vfs_vnops.c,v 1.37 1997/09/02 20:06:04 bde Exp $
* $Id: vfs_vnops.c,v 1.38 1997/09/14 02:51:16 peter Exp $
*/
#include <sys/param.h>
@ -275,7 +275,7 @@ vn_read(fp, uio, cred)
int flag, seq;
VOP_LEASE(vp, p, cred, LEASE_READ);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
vn_lock(vp, LK_SHARED | LK_NOPAUSE | LK_RETRY, p);
uio->uio_offset = fp->f_offset;
count = uio->uio_resid;
flag = 0;
@ -525,7 +525,7 @@ vn_lock(vp, flags, p)
tsleep((caddr_t)vp, PINOD, "vn_lock", 0);
error = ENOENT;
} else {
error = VOP_LOCK(vp, flags | LK_INTERLOCK, p);
error = VOP_LOCK(vp, flags | LK_NOPAUSE | LK_INTERLOCK, p);
if (error == 0)
return (error);
}

5
sys/vm/vnode_pager.c
View File

@ -38,7 +38,7 @@
* SUCH DAMAGE.
*
* from: @(#)vnode_pager.c 7.5 (Berkeley) 4/20/91
* $Id: vnode_pager.c,v 1.73 1997/08/25 22:15:31 bde Exp $
* $Id: vnode_pager.c,v 1.74 1997/09/01 03:17:34 bde Exp $
*/
/*
@ -973,7 +973,8 @@ vnode_pager_lock(object)
if (object->type != OBJT_VNODE)
continue;
vn_lock(object->handle, LK_EXCLUSIVE | LK_RETRY | LK_CANRECURSE, p);
vn_lock(object->handle,
LK_NOPAUSE | LK_SHARED | LK_RETRY | LK_CANRECURSE, p);
return object->handle;
}
return NULL;