b397c875ae
(there are still some details to work out) but expect that to go away soon. To support these basic changes (creation of lfs_putpages, lfs_gop_write, mods to lfs_balloc) several other changes were made, to wit: * Create a writer daemon kernel thread whose purpose is to handle page writes for the pagedaemon, but which also takes over some of the functions of lfs_check(). This thread is started the first time an LFS is mounted. * Add a "flags" parameter to GOP_SIZE. Current values are GOP_SIZE_READ, meaning that the call should return the size of the in-core version of the file, and GOP_SIZE_WRITE, meaning that it should return the on-disk size. One of GOP_SIZE_READ or GOP_SIZE_WRITE must be specified. * Instead of using malloc(...M_WAITOK) for everything, reserve enough resources to get by and use malloc(...M_NOWAIT), using the reserves if necessary. Use the pool subsystem for structures small enough that this is feasible. This also obsoletes LFS_THROTTLE. And a few that are not strictly necessary: * Moves the LFS inode extensions off onto a separately allocated structure; getting closer to LFS as an LKM. "Welcome to 1.6O." * Unified GOP_ALLOC between FFS and LFS. * Update LFS copyright headers to correct values. * Actually cast to unsigned in lfs_shellsort, like the comment says. * Keep track of which segments were empty before the previous checkpoint; any segments that pass two checkpoints both dirty and empty can be summarily cleaned. Do this. Right now lfs_segclean still works, but this should be turned into an effectless compatibility syscall.
186 lines
7.0 KiB
C
186 lines
7.0 KiB
C
/* $NetBSD: ffs_extern.h,v 1.26 2003/02/17 23:48:14 perseant Exp $ */
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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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* @(#)ffs_extern.h 8.6 (Berkeley) 3/30/95
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*/
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#ifndef _UFS_FFS_FFS_EXTERN_H_
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#define _UFS_FFS_FFS_EXTERN_H_
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/*
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* Sysctl values for the fast filesystem.
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*/
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#define FFS_CLUSTERREAD 1 /* cluster reading enabled */
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#define FFS_CLUSTERWRITE 2 /* cluster writing enabled */
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#define FFS_REALLOCBLKS 3 /* block reallocation enabled */
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#define FFS_ASYNCFREE 4 /* asynchronous block freeing enabled */
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#define FFS_LOG_CHANGEOPT 5 /* log optimalization strategy change */
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#define FFS_MAXID 6 /* number of valid ffs ids */
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#define FFS_NAMES { \
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{ 0, 0 }, \
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{ "doclusterread", CTLTYPE_INT }, \
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{ "doclusterwrite", CTLTYPE_INT }, \
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{ "doreallocblks", CTLTYPE_INT }, \
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{ "doasyncfree", CTLTYPE_INT }, \
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{ "log_changeopt", CTLTYPE_INT }, \
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}
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struct buf;
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struct fid;
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struct fs;
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struct inode;
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struct dinode;
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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 ucred;
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struct ufsmount;
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struct uio;
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struct vnode;
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struct mbuf;
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struct cg;
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extern struct pool ffs_inode_pool; /* memory pool for inodes */
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__BEGIN_DECLS
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/* ffs_alloc.c */
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int ffs_alloc __P((struct inode *, daddr_t, daddr_t , int, struct ucred *,
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daddr_t *));
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int ffs_realloccg __P((struct inode *, daddr_t, daddr_t, int, int ,
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struct ucred *, struct buf **, daddr_t *));
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int ffs_reallocblks __P((void *));
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int ffs_valloc __P((void *));
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/* XXX ondisk32 */
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daddr_t ffs_blkpref __P((struct inode *, daddr_t, int, int32_t *));
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void ffs_blkfree __P((struct inode *, daddr_t, long));
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int ffs_vfree __P((void *));
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void ffs_clusteracct __P((struct fs *, struct cg *, daddr_t, int));
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/* ffs_balloc.c */
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int ffs_balloc __P((void *));
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int ffs_gop_alloc __P((struct vnode *, off_t, off_t, int, struct ucred *));
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/* ffs_bswap.c */
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void ffs_sb_swap __P((struct fs*, struct fs *));
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void ffs_dinode_swap __P((struct dinode *, struct dinode *));
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void ffs_csum_swap __P((struct csum *, struct csum *, int));
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/* ffs_inode.c */
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int ffs_update __P((void *));
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int ffs_truncate __P((void *));
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/* ffs_subr.c */
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int ffs_blkatoff __P((void *));
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int ffs_freefile __P((void *));
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void ffs_fragacct __P((struct fs *, int, int32_t[], int, int));
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#ifdef DIAGNOSTIC
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void ffs_checkoverlap __P((struct buf *, struct inode *));
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#endif
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int ffs_isblock __P((struct fs *, u_char *, daddr_t));
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int ffs_isfreeblock __P((struct fs *, u_char *, daddr_t));
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void ffs_clrblock __P((struct fs *, u_char *, daddr_t));
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void ffs_setblock __P((struct fs *, u_char *, daddr_t));
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/* ffs_vfsops.c */
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void ffs_init __P((void));
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void ffs_reinit __P((void));
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void ffs_done __P((void));
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int ffs_mountroot __P((void));
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int ffs_mount __P((struct mount *, const char *, void *, struct nameidata *,
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struct proc *));
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int ffs_reload __P((struct mount *, struct ucred *, struct proc *));
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int ffs_mountfs __P((struct vnode *, struct mount *, struct proc *));
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int ffs_oldfscompat __P((struct fs *));
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int ffs_unmount __P((struct mount *, int, struct proc *));
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int ffs_flushfiles __P((struct mount *, int, struct proc *));
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int ffs_statfs __P((struct mount *, struct statfs *, struct proc *));
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int ffs_sync __P((struct mount *, int, struct ucred *, struct proc *));
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int ffs_vget __P((struct mount *, ino_t, struct vnode **));
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int ffs_fhtovp __P((struct mount *, struct fid *, struct vnode **));
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int ffs_vptofh __P((struct vnode *, struct fid *));
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int ffs_sysctl __P((int *, u_int, void *, size_t *, void *, size_t,
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struct proc *));
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int ffs_sbupdate __P((struct ufsmount *, int));
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int ffs_cgupdate __P((struct ufsmount *, int));
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/* ffs_appleufs.c */
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u_int16_t ffs_appleufs_cksum __P((const struct appleufslabel *));
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int ffs_appleufs_validate __P((const char*,const struct appleufslabel *,struct appleufslabel *));
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void ffs_appleufs_set __P((struct appleufslabel *, const char *, time_t));
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/* ffs_vnops.c */
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int ffs_read __P((void *));
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int ffs_write __P((void *));
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int ffs_fsync __P((void *));
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int ffs_reclaim __P((void *));
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int ffs_getpages __P((void *));
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int ffs_putpages __P((void *));
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void ffs_gop_size __P((struct vnode *, off_t, off_t *, int));
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__END_DECLS
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/*
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* Soft dependency function prototypes.
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*/
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void softdep_initialize __P((void));
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void softdep_reinitialize __P((void));
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int softdep_mount __P((struct vnode *, struct mount *, struct fs *,
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struct ucred *));
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int softdep_flushfiles __P((struct mount *, int, struct proc *));
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void softdep_update_inodeblock __P((struct inode *, struct buf *, int));
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void softdep_load_inodeblock __P((struct inode *));
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void softdep_freefile __P((void *));
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void softdep_setup_freeblocks __P((struct inode *, off_t));
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void softdep_setup_inomapdep __P((struct buf *, struct inode *, ino_t));
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void softdep_setup_blkmapdep __P((struct buf *, struct fs *, daddr_t));
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void softdep_setup_allocdirect __P((struct inode *, daddr_t, daddr_t,
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daddr_t, long, long, struct buf *));
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void softdep_setup_allocindir_meta __P((struct buf *, struct inode *,
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struct buf *, int, daddr_t));
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void softdep_setup_allocindir_page __P((struct inode *, daddr_t,
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struct buf *, int, daddr_t, daddr_t, struct buf *));
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void softdep_fsync_mountdev __P((struct vnode *));
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int softdep_sync_metadata __P((void *));
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extern int (**ffs_vnodeop_p) __P((void *));
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extern int (**ffs_specop_p) __P((void *));
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extern int (**ffs_fifoop_p) __P((void *));
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#endif /* !_UFS_FFS_FFS_EXTERN_H_ */
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