ddfb1dbb92
processes don't have to wait for one another to finish (e.g., nfsd seems to be a little happier now, though I haven't measured the difference). Synchronous checkpoints, however, must always wait for all i/o to finish. Take the contents of the callback functions and have them run in thread context instead (aiodoned thread). lfs_iocount no longer has to be protected in splbio(), and quite a bit less of the segment construction loop needs to be in splbio() as well. If lfs_markv is handed a block that is not the correct size according to the inode, refuse to process it. (Formerly it was extended to the "correct" size.) This is possibly more prone to deadlock, but less prone to corruption. lfs_segclean now outright refuses to clean segments that appear to have live bytes in them. Again this may be more prone to deadlock but avoids corruption. Replace ufsspec_close and ufsfifo_close with LFS equivalents; this means that no UFS functions need to know about LFS_ITIMES any more. Remove the reference from ufs/inode.h. Tested on i386, test-compiled on alpha.
242 lines
9.2 KiB
C
242 lines
9.2 KiB
C
/* $NetBSD: lfs_extern.h,v 1.31 2002/06/16 00:13:15 perseant Exp $ */
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/*-
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* Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Konrad E. Schroder <perseant@hhhh.org>.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 1991, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)lfs_extern.h 8.6 (Berkeley) 5/8/95
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*/
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/* Copied from ext2fs for ITIMES. XXX This is a bogus use of v_tag. */
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#define IS_LFS_VNODE(vp) (vp->v_tag == VT_LFS)
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/*
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* Sysctl values for LFS.
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*/
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#define LFS_WRITEINDIR 1 /* flush indirect blocks on non-checkpoint writes */
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#define LFS_CLEAN_VNHEAD 2 /* put prev unrefed cleaned vnodes on head of free list */
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#define LFS_DOSTATS 3
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#define LFS_STATS 4
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#define LFS_MAXID 5
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#define LFS_NAMES { \
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{ 0, 0 }, \
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{ "flushindir", CTLTYPE_INT }, \
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{ "clean_vnhead", CTLTYPE_INT }, \
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{ "dostats", CTLTYPE_INT }, \
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{ "stats", CTLTYPE_STRUCT }, \
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}
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struct fid;
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struct mount;
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struct nameidata;
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struct proc;
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struct statfs;
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struct timeval;
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struct inode;
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struct uio;
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struct mbuf;
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struct dinode;
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struct buf;
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struct vnode;
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struct dlfs;
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struct lfs;
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struct segment;
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struct ucred;
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extern int lfs_allclean_wakeup;
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extern struct pool lfs_inode_pool; /* memory pool for inodes */
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__BEGIN_DECLS
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/* lfs_alloc.c */
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int lfs_rf_valloc(struct lfs *, ino_t, int, struct proc *, struct vnode **);
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void lfs_vcreate(struct mount *, ino_t, struct vnode *);
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/* lfs_bio.c */
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int lfs_availwait(struct lfs *, int);
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int lfs_bwrite_ext(struct buf *, int);
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int lfs_fits(struct lfs *, int);
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void lfs_flush_fs(struct lfs *, int);
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void lfs_flush(struct lfs *, int);
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int lfs_check(struct vnode *, ufs_daddr_t, int);
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#ifdef MALLOCLOG
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void lfs_freebuf_malloclog(struct buf *, char *, int);
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struct buf *lfs_newbuf_malloclog(struct lfs *, struct vnode *,
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ufs_daddr_t, size_t, char *, int);
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#define lfs_freebuf(BP) lfs_freebuf_malloclog((BP), __FILE__, __LINE__)
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#define lfs_newbuf(F, V, A, S) lfs_newbuf_malloclog((F),(V),(A),(S),__FILE__,__LINE__)
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#else
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void lfs_freebuf(struct buf *);
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struct buf *lfs_newbuf(struct lfs *, struct vnode *, ufs_daddr_t, size_t);
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#endif
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void lfs_countlocked(int *, long *, char *);
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int lfs_reserve(struct lfs *, struct vnode *, int);
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/* lfs_cksum.c */
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u_int32_t cksum(void *, size_t);
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u_int32_t lfs_sb_cksum(struct dlfs *);
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/* lfs_debug.c */
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#ifdef DEBUG
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int lfs_bwrite_log(struct buf *, char *, int);
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void lfs_dumplog(void);
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void lfs_dump_super(struct lfs *);
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void lfs_dump_dinode(struct dinode *);
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void lfs_check_bpp(struct lfs *, struct segment *, char *, int);
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void lfs_check_segsum(struct lfs *, struct segment *, char *, int);
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#endif /* DEBUG */
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/* lfs_inode.c */
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struct dinode *lfs_ifind(struct lfs *, ino_t, struct buf *);
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/* lfs_segment.c */
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void lfs_imtime(struct lfs *);
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int lfs_vflush(struct vnode *);
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int lfs_writevnodes(struct lfs *, struct mount *, struct segment *, int);
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int lfs_segwrite(struct mount *, int);
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void lfs_writefile(struct lfs *, struct segment *, struct vnode *);
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int lfs_writeinode(struct lfs *, struct segment *, struct inode *);
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int lfs_gatherblock(struct segment *, struct buf *, int *);
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int lfs_gather(struct lfs *, struct segment *, struct vnode *, int (*match )(struct lfs *, struct buf *));
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void lfs_updatemeta(struct segment *);
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int lfs_initseg(struct lfs *);
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void lfs_newseg(struct lfs *);
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int lfs_writeseg(struct lfs *, struct segment *);
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void lfs_writesuper(struct lfs *, daddr_t);
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int lfs_match_data(struct lfs *, struct buf *);
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int lfs_match_indir(struct lfs *, struct buf *);
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int lfs_match_dindir(struct lfs *, struct buf *);
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int lfs_match_tindir(struct lfs *, struct buf *);
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void lfs_callback(struct buf *);
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void lfs_supercallback(struct buf *);
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void lfs_shellsort(struct buf **, ufs_daddr_t *, int);
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int lfs_vref(struct vnode *);
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void lfs_vunref(struct vnode *);
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void lfs_vunref_head(struct vnode *);
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/* lfs_subr.c */
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void lfs_seglock(struct lfs *, unsigned long);
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void lfs_segunlock(struct lfs *);
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/* lfs_syscalls.c */
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int lfs_fastvget(struct mount *, ino_t, ufs_daddr_t, struct vnode **, struct dinode *, int *);
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struct buf *lfs_fakebuf(struct lfs *, struct vnode *, int, size_t, caddr_t);
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/* lfs_vfsops.c */
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void lfs_init(void);
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void lfs_reinit(void);
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void lfs_done(void);
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int lfs_mountroot(void);
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int lfs_mount(struct mount *, const char *, void *, struct nameidata *, struct proc *);
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int lfs_mountfs(struct vnode *, struct mount *, struct proc *);
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int lfs_unmount(struct mount *, int, struct proc *);
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int lfs_statfs(struct mount *, struct statfs *, struct proc *);
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int lfs_sync(struct mount *, int, struct ucred *, struct proc *);
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int lfs_vget(struct mount *, ino_t, struct vnode **);
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int lfs_fhtovp(struct mount *, struct fid *, struct vnode **);
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int lfs_vptofh(struct vnode *, struct fid *);
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int lfs_sysctl(int *, u_int, void *, size_t *, void *, size_t, struct proc *);
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/* lfs_vnops.c */
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void lfs_unmark_vnode(struct vnode *);
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void lfs_itimes(struct inode *, struct timespec *, struct timespec *,
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struct timespec *);
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int lfs_balloc (void *);
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int lfs_valloc (void *);
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int lfs_vfree (void *);
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int lfs_bwrite (void *);
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int lfs_update (void *);
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int lfs_truncate (void *);
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int lfs_blkatoff (void *);
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int lfs_fsync (void *);
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int lfs_symlink (void *);
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int lfs_mknod (void *);
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int lfs_create (void *);
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int lfs_mkdir (void *);
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int lfs_read (void *);
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int lfs_remove (void *);
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int lfs_rmdir (void *);
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int lfs_link (void *);
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int lfs_rename (void *);
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int lfs_getattr (void *);
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int lfs_setattr (void *);
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int lfs_close (void *);
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int lfsspec_close(void *);
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int lfsfifo_close(void *);
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int lfs_inactive (void *);
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int lfs_reclaim (void *);
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int lfs_write (void *);
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int lfs_whiteout (void *);
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int lfs_getpages (void *);
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int lfs_putpages (void *);
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__END_DECLS
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extern int lfs_mount_type;
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extern int (**lfs_vnodeop_p)(void *);
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extern int (**lfs_specop_p)(void *);
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extern int (**lfs_fifoop_p)(void *);
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extern struct genfs_ops lfs_genfsops;
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