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authordyson <dyson@FreeBSD.org>1996-01-19 04:00:31 +0000
committerdyson <dyson@FreeBSD.org>1996-01-19 04:00:31 +0000
commit8fc8a772af22f6e03233d248fa2dbd9b5c2bdd7d (patch)
tree3c31fd95ea745005a9cd6733db5a16f31bd828a6 /sys/sys/bio.h
parent6755beedbf0ddaa9e66e91c8e74f620ede6bfad5 (diff)
downloadFreeBSD-src-8fc8a772af22f6e03233d248fa2dbd9b5c2bdd7d.zip
FreeBSD-src-8fc8a772af22f6e03233d248fa2dbd9b5c2bdd7d.tar.gz
Eliminated many redundant vm_map_lookup operations for vm_mmap.
Speed up for vfs_bio -- addition of a routine bqrelse to greatly diminish overhead for merged cache. Efficiency improvement for vfs_cluster. It used to do alot of redundant calls to cluster_rbuild. Correct the ordering for vrele of .text and release of credentials. Use the selective tlb update for 486/586/P6. Numerous fixes to the size of objects allocated for files. Additionally, fixes in the various pagers. Fixes for proper positioning of vnode_pager_setsize in msdosfs and ext2fs. Fixes in the swap pager for exhausted resources. The pageout code will not as readily thrash. Change the page queue flags (PG_ACTIVE, PG_INACTIVE, PG_FREE, PG_CACHE) into page queue indices (PQ_ACTIVE, PQ_INACTIVE, PQ_FREE, PQ_CACHE), thereby improving efficiency of several routines. Eliminate even more unnecessary vm_page_protect operations. Significantly speed up process forks. Make vm_object_page_clean more efficient, thereby eliminating the pause that happens every 30seconds. Make sequential clustered writes B_ASYNC instead of B_DELWRI even in the case of filesystems mounted async. Fix a panic with busy pages when write clustering is done for non-VMIO buffers.
Diffstat (limited to 'sys/sys/bio.h')
-rw-r--r--sys/sys/bio.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/sys/bio.h b/sys/sys/bio.h
index e0c260a..cd843c0 100644
--- a/sys/sys/bio.h
+++ b/sys/sys/bio.h
@@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)buf.h 8.7 (Berkeley) 1/21/94
- * $Id: buf.h,v 1.25 1995/12/11 04:57:20 dyson Exp $
+ * $Id: buf.h,v 1.26 1995/12/28 23:34:28 davidg Exp $
*/
#ifndef _SYS_BUF_H_
@@ -207,6 +207,7 @@ int bwrite __P((struct buf *));
void bdwrite __P((struct buf *));
void bawrite __P((struct buf *));
void brelse __P((struct buf *));
+void bqrelse __P((struct buf *));
int vfs_bio_awrite __P((struct buf *));
struct buf * getpbuf __P((void));
struct buf *incore __P((struct vnode *, daddr_t));
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