cvs commit: src/sys/kern vfs_bio.c vfs_cluster.c vfs_lock.c vfs_vopops.c src/sys/sys buf.h vfsops.h src/sys/vfs/gnu/ext2fs ext2_readwrite.c ext2_vnops.c src/sys/vfs/hpfs hpfs_vnops.c src/sys/vfs/isofs/cd9660 cd9660_lookup.c cd9660_vnops.c ...

[Matthew Dillon]

dillon      2008/06/19 16:27:39 PDT

DragonFly src repository

  Modified files:
    sys/kern             vfs_bio.c vfs_cluster.c vfs_lock.c 
                         vfs_vopops.c 
    sys/sys              buf.h vfsops.h 
    sys/vfs/gnu/ext2fs   ext2_readwrite.c ext2_vnops.c 
    sys/vfs/hpfs         hpfs_vnops.c 
    sys/vfs/isofs/cd9660 cd9660_lookup.c cd9660_vnops.c 
    sys/vfs/ufs          ffs_rawread.c ffs_softdep.c 
                         ufs_readwrite.c ufs_vnops.c 
    sys/vm               vnode_pager.c 
  Log:
  Miscellanious performance adjustments to the kernel
  
  * Add an argument to VOP_BMAP so VFSs can discern the type of operation
    the BMAP is being done for.
  
  * Normalize the variable name denoting the blocksize to 'blksize' in
    vfs_cluster.c.
  
  * Fix a bug in the cluster code where a stale bp->b_error could wind up
    getting returned when B_ERROR is not set.
  
  * Do not B_AGE cluster bufs.
  
  * Pass the block size to both cluster_read() and cluster_write() instead
    of those routines getting the block size from
    vp->v_mount->mnt_stat.f_iosize.  This allows different areas of a file
    to use a different block size.
  
  * Properly initialize bp->b_bio2.bio_offset to doffset in cluster_read().
    This fixes an issue where VFSs were making an extra, unnecessary call
    to BMAP.
  
  * Do not recycle vnodes on the free list until numvnodes has reached
    desiredvnodes.  Vnodes were being recycled when their resident page count
    had dropped to zero, but this is actually too early as the VFS may cache
    important information in the vnode that would otherwise require a number
    of I/O's to re-acquire.  This mainly helps HAMMER (whos inode lookups are
    fairly expensive).
  
  * Do not VAGE vnodes.
  
  * Remove the minvnodes test.  There is no reason not to load the vnode cache
    all the way through to its max.
  
  * buf_cmd_t visibility for the new BMAP argument.
  
  Revision  Changes    Path
  1.105     +8 -6      src/sys/kern/vfs_bio.c
  1.38      +86 -98    src/sys/kern/vfs_cluster.c
  1.29      +12 -12    src/sys/kern/vfs_lock.c
  1.39      +2 -1      src/sys/kern/vfs_vopops.c
  1.48      +5 -1      src/sys/sys/buf.h
  1.32      +7 -3      src/sys/sys/vfsops.h
  1.15      +1 -1      src/sys/vfs/gnu/ext2fs/ext2_readwrite.c
  1.43      +1 -1      src/sys/vfs/gnu/ext2fs/ext2_vnops.c
  1.47      +1 -1      src/sys/vfs/hpfs/hpfs_vnops.c
  1.25      +4 -2      src/sys/vfs/isofs/cd9660/cd9660_lookup.c
  1.40      +1 -1      src/sys/vfs/isofs/cd9660/cd9660_vnops.c
  1.28      +1 -1      src/sys/vfs/ufs/ffs_rawread.c
  1.56      +2 -1      src/sys/vfs/ufs/ffs_softdep.c
  1.26      +2 -2      src/sys/vfs/ufs/ufs_readwrite.c
  1.65      +1 -1      src/sys/vfs/ufs/ufs_vnops.c
  1.43      +1 -1      src/sys/vm/vnode_pager.c


http://www.dragonflybsd.org/cvsweb/src/sys/kern/vfs_bio.c.diff?r1=1.104&r2=1.105&f=u
http://www.dragonflybsd.org/cvsweb/src/sys/kern/vfs_cluster.c.diff?r1=1.37&r2=1.38&f=u
http://www.dragonflybsd.org/cvsweb/src/sys/kern/vfs_lock.c.diff?r1=1.28&r2=1.29&f=u
http://www.dragonflybsd.org/cvsweb/src/sys/kern/vfs_vopops.c.diff?r1=1.38&r2=1.39&f=u
http://www.dragonflybsd.org/cvsweb/src/sys/sys/buf.h.diff?r1=1.47&r2=1.48&f=u
http://www.dragonflybsd.org/cvsweb/src/sys/sys/vfsops.h.diff?r1=1.31&r2=1.32&f=u
http://www.dragonflybsd.org/cvsweb/src/sys/vfs/gnu/ext2fs/ext2_readwrite.c.diff?r1=1.14&r2=1.15&f=u
http://www.dragonflybsd.org/cvsweb/src/sys/vfs/gnu/ext2fs/ext2_vnops.c.diff?r1=1.42&r2=1.43&f=u
http://www.dragonflybsd.org/cvsweb/src/sys/vfs/hpfs/hpfs_vnops.c.diff?r1=1.46&r2=1.47&f=u
http://www.dragonflybsd.org/cvsweb/src/sys/vfs/isofs/cd9660/cd9660_lookup.c.diff?r1=1.24&r2=1.25&f=u
http://www.dragonflybsd.org/cvsweb/src/sys/vfs/isofs/cd9660/cd9660_vnops.c.diff?r1=1.39&r2=1.40&f=u
http://www.dragonflybsd.org/cvsweb/src/sys/vfs/ufs/ffs_rawread.c.diff?r1=1.27&r2=1.28&f=u
http://www.dragonflybsd.org/cvsweb/src/sys/vfs/ufs/ffs_softdep.c.diff?r1=1.55&r2=1.56&f=u
http://www.dragonflybsd.org/cvsweb/src/sys/vfs/ufs/ufs_readwrite.c.diff?r1=1.25&r2=1.26&f=u
http://www.dragonflybsd.org/cvsweb/src/sys/vfs/ufs/ufs_vnops.c.diff?r1=1.64&r2=1.65&f=u
http://www.dragonflybsd.org/cvsweb/src/sys/vm/vnode_pager.c.diff?r1=1.42&r2=1.43&f=u