Annotation of src/sys/ufs/ffs/ffs_vnops.c, Revision 1.69
1.69 ! perry 1: /* $NetBSD: ffs_vnops.c,v 1.68 2005/01/27 02:16:42 wrstuden Exp $ */
1.3 cgd 2:
1.1 mycroft 3: /*
4: * Copyright (c) 1982, 1986, 1989, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
1.60 agc 15: * 3. Neither the name of the University nor the names of its contributors
1.1 mycroft 16: * may be used to endorse or promote products derived from this software
17: * without specific prior written permission.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: * SUCH DAMAGE.
30: *
1.12 fvdl 31: * @(#)ffs_vnops.c 8.15 (Berkeley) 5/14/95
1.1 mycroft 32: */
1.44 lukem 33:
34: #include <sys/cdefs.h>
1.69 ! perry 35: __KERNEL_RCSID(0, "$NetBSD: ffs_vnops.c,v 1.68 2005/01/27 02:16:42 wrstuden Exp $");
1.11 mrg 36:
1.1 mycroft 37: #include <sys/param.h>
38: #include <sys/systm.h>
39: #include <sys/resourcevar.h>
40: #include <sys/kernel.h>
41: #include <sys/file.h>
42: #include <sys/stat.h>
43: #include <sys/buf.h>
1.50 jdolecek 44: #include <sys/event.h>
1.1 mycroft 45: #include <sys/proc.h>
46: #include <sys/mount.h>
47: #include <sys/vnode.h>
1.16 thorpej 48: #include <sys/pool.h>
1.6 christos 49: #include <sys/signalvar.h>
1.1 mycroft 50:
1.8 mycroft 51: #include <miscfs/fifofs/fifo.h>
52: #include <miscfs/genfs/genfs.h>
1.1 mycroft 53: #include <miscfs/specfs/specdev.h>
54:
55: #include <ufs/ufs/inode.h>
56: #include <ufs/ufs/dir.h>
57: #include <ufs/ufs/ufs_extern.h>
1.2 mycroft 58: #include <ufs/ufs/ufsmount.h>
1.1 mycroft 59:
60: #include <ufs/ffs/fs.h>
61: #include <ufs/ffs/ffs_extern.h>
62:
1.49 chs 63: #include <uvm/uvm.h>
64:
1.33 fvdl 65: static int ffs_full_fsync __P((void *));
66:
1.1 mycroft 67: /* Global vfs data structures for ufs. */
1.6 christos 68: int (**ffs_vnodeop_p) __P((void *));
1.37 jdolecek 69: const struct vnodeopv_entry_desc ffs_vnodeop_entries[] = {
1.1 mycroft 70: { &vop_default_desc, vn_default_error },
71: { &vop_lookup_desc, ufs_lookup }, /* lookup */
72: { &vop_create_desc, ufs_create }, /* create */
1.5 mycroft 73: { &vop_whiteout_desc, ufs_whiteout }, /* whiteout */
1.1 mycroft 74: { &vop_mknod_desc, ufs_mknod }, /* mknod */
75: { &vop_open_desc, ufs_open }, /* open */
76: { &vop_close_desc, ufs_close }, /* close */
77: { &vop_access_desc, ufs_access }, /* access */
78: { &vop_getattr_desc, ufs_getattr }, /* getattr */
79: { &vop_setattr_desc, ufs_setattr }, /* setattr */
80: { &vop_read_desc, ffs_read }, /* read */
81: { &vop_write_desc, ffs_write }, /* write */
1.4 mycroft 82: { &vop_lease_desc, ufs_lease_check }, /* lease */
1.1 mycroft 83: { &vop_ioctl_desc, ufs_ioctl }, /* ioctl */
1.19 wrstuden 84: { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */
1.9 mycroft 85: { &vop_poll_desc, ufs_poll }, /* poll */
1.50 jdolecek 86: { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */
1.12 fvdl 87: { &vop_revoke_desc, ufs_revoke }, /* revoke */
1.1 mycroft 88: { &vop_mmap_desc, ufs_mmap }, /* mmap */
89: { &vop_fsync_desc, ffs_fsync }, /* fsync */
90: { &vop_seek_desc, ufs_seek }, /* seek */
91: { &vop_remove_desc, ufs_remove }, /* remove */
92: { &vop_link_desc, ufs_link }, /* link */
93: { &vop_rename_desc, ufs_rename }, /* rename */
94: { &vop_mkdir_desc, ufs_mkdir }, /* mkdir */
95: { &vop_rmdir_desc, ufs_rmdir }, /* rmdir */
96: { &vop_symlink_desc, ufs_symlink }, /* symlink */
97: { &vop_readdir_desc, ufs_readdir }, /* readdir */
98: { &vop_readlink_desc, ufs_readlink }, /* readlink */
99: { &vop_abortop_desc, ufs_abortop }, /* abortop */
100: { &vop_inactive_desc, ufs_inactive }, /* inactive */
101: { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */
102: { &vop_lock_desc, ufs_lock }, /* lock */
103: { &vop_unlock_desc, ufs_unlock }, /* unlock */
104: { &vop_bmap_desc, ufs_bmap }, /* bmap */
105: { &vop_strategy_desc, ufs_strategy }, /* strategy */
106: { &vop_print_desc, ufs_print }, /* print */
107: { &vop_islocked_desc, ufs_islocked }, /* islocked */
108: { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */
109: { &vop_advlock_desc, ufs_advlock }, /* advlock */
110: { &vop_blkatoff_desc, ffs_blkatoff }, /* blkatoff */
111: { &vop_valloc_desc, ffs_valloc }, /* valloc */
1.20 fvdl 112: { &vop_balloc_desc, ffs_balloc }, /* balloc */
1.1 mycroft 113: { &vop_reallocblks_desc, ffs_reallocblks }, /* reallocblks */
114: { &vop_vfree_desc, ffs_vfree }, /* vfree */
115: { &vop_truncate_desc, ffs_truncate }, /* truncate */
116: { &vop_update_desc, ffs_update }, /* update */
1.8 mycroft 117: { &vop_bwrite_desc, vn_bwrite }, /* bwrite */
1.39 chs 118: { &vop_getpages_desc, ffs_getpages }, /* getpages */
1.49 chs 119: { &vop_putpages_desc, ffs_putpages }, /* putpages */
1.35 chs 120: { NULL, NULL }
1.1 mycroft 121: };
1.37 jdolecek 122: const struct vnodeopv_desc ffs_vnodeop_opv_desc =
1.1 mycroft 123: { &ffs_vnodeop_p, ffs_vnodeop_entries };
124:
1.6 christos 125: int (**ffs_specop_p) __P((void *));
1.37 jdolecek 126: const struct vnodeopv_entry_desc ffs_specop_entries[] = {
1.1 mycroft 127: { &vop_default_desc, vn_default_error },
128: { &vop_lookup_desc, spec_lookup }, /* lookup */
129: { &vop_create_desc, spec_create }, /* create */
130: { &vop_mknod_desc, spec_mknod }, /* mknod */
131: { &vop_open_desc, spec_open }, /* open */
132: { &vop_close_desc, ufsspec_close }, /* close */
133: { &vop_access_desc, ufs_access }, /* access */
134: { &vop_getattr_desc, ufs_getattr }, /* getattr */
135: { &vop_setattr_desc, ufs_setattr }, /* setattr */
136: { &vop_read_desc, ufsspec_read }, /* read */
137: { &vop_write_desc, ufsspec_write }, /* write */
1.4 mycroft 138: { &vop_lease_desc, spec_lease_check }, /* lease */
1.1 mycroft 139: { &vop_ioctl_desc, spec_ioctl }, /* ioctl */
1.19 wrstuden 140: { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */
1.9 mycroft 141: { &vop_poll_desc, spec_poll }, /* poll */
1.50 jdolecek 142: { &vop_kqfilter_desc, spec_kqfilter }, /* kqfilter */
1.12 fvdl 143: { &vop_revoke_desc, spec_revoke }, /* revoke */
1.1 mycroft 144: { &vop_mmap_desc, spec_mmap }, /* mmap */
145: { &vop_fsync_desc, ffs_fsync }, /* fsync */
146: { &vop_seek_desc, spec_seek }, /* seek */
147: { &vop_remove_desc, spec_remove }, /* remove */
148: { &vop_link_desc, spec_link }, /* link */
149: { &vop_rename_desc, spec_rename }, /* rename */
150: { &vop_mkdir_desc, spec_mkdir }, /* mkdir */
151: { &vop_rmdir_desc, spec_rmdir }, /* rmdir */
152: { &vop_symlink_desc, spec_symlink }, /* symlink */
153: { &vop_readdir_desc, spec_readdir }, /* readdir */
154: { &vop_readlink_desc, spec_readlink }, /* readlink */
155: { &vop_abortop_desc, spec_abortop }, /* abortop */
156: { &vop_inactive_desc, ufs_inactive }, /* inactive */
157: { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */
158: { &vop_lock_desc, ufs_lock }, /* lock */
159: { &vop_unlock_desc, ufs_unlock }, /* unlock */
160: { &vop_bmap_desc, spec_bmap }, /* bmap */
161: { &vop_strategy_desc, spec_strategy }, /* strategy */
162: { &vop_print_desc, ufs_print }, /* print */
163: { &vop_islocked_desc, ufs_islocked }, /* islocked */
164: { &vop_pathconf_desc, spec_pathconf }, /* pathconf */
165: { &vop_advlock_desc, spec_advlock }, /* advlock */
166: { &vop_blkatoff_desc, spec_blkatoff }, /* blkatoff */
167: { &vop_valloc_desc, spec_valloc }, /* valloc */
168: { &vop_reallocblks_desc, spec_reallocblks }, /* reallocblks */
169: { &vop_vfree_desc, ffs_vfree }, /* vfree */
170: { &vop_truncate_desc, spec_truncate }, /* truncate */
171: { &vop_update_desc, ffs_update }, /* update */
1.8 mycroft 172: { &vop_bwrite_desc, vn_bwrite }, /* bwrite */
1.38 chs 173: { &vop_getpages_desc, spec_getpages }, /* getpages */
174: { &vop_putpages_desc, spec_putpages }, /* putpages */
1.35 chs 175: { NULL, NULL }
1.1 mycroft 176: };
1.37 jdolecek 177: const struct vnodeopv_desc ffs_specop_opv_desc =
1.1 mycroft 178: { &ffs_specop_p, ffs_specop_entries };
179:
1.6 christos 180: int (**ffs_fifoop_p) __P((void *));
1.37 jdolecek 181: const struct vnodeopv_entry_desc ffs_fifoop_entries[] = {
1.1 mycroft 182: { &vop_default_desc, vn_default_error },
183: { &vop_lookup_desc, fifo_lookup }, /* lookup */
184: { &vop_create_desc, fifo_create }, /* create */
185: { &vop_mknod_desc, fifo_mknod }, /* mknod */
186: { &vop_open_desc, fifo_open }, /* open */
187: { &vop_close_desc, ufsfifo_close }, /* close */
188: { &vop_access_desc, ufs_access }, /* access */
189: { &vop_getattr_desc, ufs_getattr }, /* getattr */
190: { &vop_setattr_desc, ufs_setattr }, /* setattr */
191: { &vop_read_desc, ufsfifo_read }, /* read */
192: { &vop_write_desc, ufsfifo_write }, /* write */
1.4 mycroft 193: { &vop_lease_desc, fifo_lease_check }, /* lease */
1.1 mycroft 194: { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */
1.19 wrstuden 195: { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */
1.9 mycroft 196: { &vop_poll_desc, fifo_poll }, /* poll */
1.50 jdolecek 197: { &vop_kqfilter_desc, fifo_kqfilter }, /* kqfilter */
1.12 fvdl 198: { &vop_revoke_desc, fifo_revoke }, /* revoke */
1.1 mycroft 199: { &vop_mmap_desc, fifo_mmap }, /* mmap */
200: { &vop_fsync_desc, ffs_fsync }, /* fsync */
201: { &vop_seek_desc, fifo_seek }, /* seek */
202: { &vop_remove_desc, fifo_remove }, /* remove */
203: { &vop_link_desc, fifo_link }, /* link */
204: { &vop_rename_desc, fifo_rename }, /* rename */
205: { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */
206: { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */
207: { &vop_symlink_desc, fifo_symlink }, /* symlink */
208: { &vop_readdir_desc, fifo_readdir }, /* readdir */
209: { &vop_readlink_desc, fifo_readlink }, /* readlink */
210: { &vop_abortop_desc, fifo_abortop }, /* abortop */
211: { &vop_inactive_desc, ufs_inactive }, /* inactive */
212: { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */
213: { &vop_lock_desc, ufs_lock }, /* lock */
214: { &vop_unlock_desc, ufs_unlock }, /* unlock */
215: { &vop_bmap_desc, fifo_bmap }, /* bmap */
216: { &vop_strategy_desc, fifo_strategy }, /* strategy */
217: { &vop_print_desc, ufs_print }, /* print */
218: { &vop_islocked_desc, ufs_islocked }, /* islocked */
219: { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */
220: { &vop_advlock_desc, fifo_advlock }, /* advlock */
221: { &vop_blkatoff_desc, fifo_blkatoff }, /* blkatoff */
222: { &vop_valloc_desc, fifo_valloc }, /* valloc */
223: { &vop_reallocblks_desc, fifo_reallocblks }, /* reallocblks */
224: { &vop_vfree_desc, ffs_vfree }, /* vfree */
225: { &vop_truncate_desc, fifo_truncate }, /* truncate */
226: { &vop_update_desc, ffs_update }, /* update */
1.8 mycroft 227: { &vop_bwrite_desc, vn_bwrite }, /* bwrite */
1.40 sommerfe 228: { &vop_putpages_desc, fifo_putpages }, /* putpages */
1.35 chs 229: { NULL, NULL }
1.1 mycroft 230: };
1.37 jdolecek 231: const struct vnodeopv_desc ffs_fifoop_opv_desc =
1.1 mycroft 232: { &ffs_fifoop_p, ffs_fifoop_entries };
233:
234: #include <ufs/ufs/ufs_readwrite.c>
1.20 fvdl 235:
1.33 fvdl 236: int
237: ffs_fsync(v)
238: void *v;
239: {
240: struct vop_fsync_args /* {
241: struct vnode *a_vp;
242: struct ucred *a_cred;
243: int a_flags;
1.46 chs 244: off_t a_offlo;
245: off_t a_offhi;
1.59 fvdl 246: struct proc *a_p;
1.33 fvdl 247: } */ *ap = v;
1.35 chs 248: struct buf *bp;
1.33 fvdl 249: int s, num, error, i;
250: struct indir ia[NIADDR + 1];
251: int bsize;
1.45 simonb 252: daddr_t blk_high;
1.33 fvdl 253: struct vnode *vp;
254:
255: /*
256: * XXX no easy way to sync a range in a file with softdep.
257: */
1.64 dbj 258: if ((ap->a_offlo == 0 && ap->a_offhi == 0) || DOINGSOFTDEP(ap->a_vp) ||
1.65 jdolecek 259: (ap->a_vp->v_type != VREG))
1.33 fvdl 260: return ffs_full_fsync(v);
261:
262: vp = ap->a_vp;
263:
264: bsize = ap->a_vp->v_mount->mnt_stat.f_iosize;
265: blk_high = ap->a_offhi / bsize;
266: if (ap->a_offhi % bsize != 0)
267: blk_high++;
268:
269: /*
1.35 chs 270: * First, flush all pages in range.
1.33 fvdl 271: */
1.35 chs 272:
1.64 dbj 273: simple_lock(&vp->v_interlock);
274: error = VOP_PUTPAGES(vp, trunc_page(ap->a_offlo),
275: round_page(ap->a_offhi), PGO_CLEANIT |
276: ((ap->a_flags & FSYNC_WAIT) ? PGO_SYNCIO : 0));
277: if (error) {
278: return error;
1.39 chs 279: }
1.33 fvdl 280:
281: /*
1.35 chs 282: * Then, flush indirect blocks.
1.33 fvdl 283: */
1.35 chs 284:
1.41 chs 285: s = splbio();
1.61 kleink 286: if (blk_high >= NDADDR) {
1.33 fvdl 287: error = ufs_getlbns(vp, blk_high, ia, &num);
1.42 chs 288: if (error) {
289: splx(s);
1.33 fvdl 290: return error;
1.42 chs 291: }
1.33 fvdl 292: for (i = 0; i < num; i++) {
1.35 chs 293: bp = incore(vp, ia[i].in_lbn);
1.62 dbj 294: if (bp != NULL) {
295: simple_lock(&bp->b_interlock);
296: if (!(bp->b_flags & B_BUSY) && (bp->b_flags & B_DELWRI)) {
297: bp->b_flags |= B_BUSY | B_VFLUSH;
298: simple_unlock(&bp->b_interlock);
299: splx(s);
300: bawrite(bp);
301: s = splbio();
302: } else {
303: simple_unlock(&bp->b_interlock);
304: }
1.33 fvdl 305: }
306: }
307: }
308:
309: if (ap->a_flags & FSYNC_WAIT) {
1.54 pk 310: simple_lock(&global_v_numoutput_slock);
1.33 fvdl 311: while (vp->v_numoutput > 0) {
312: vp->v_flag |= VBWAIT;
1.54 pk 313: ltsleep(&vp->v_numoutput, PRIBIO + 1, "fsync_range", 0,
314: &global_v_numoutput_slock);
1.33 fvdl 315: }
1.54 pk 316: simple_unlock(&global_v_numoutput_slock);
1.33 fvdl 317: }
1.34 fvdl 318: splx(s);
1.33 fvdl 319:
1.67 wrstuden 320: error = VOP_UPDATE(vp, NULL, NULL,
1.66 thorpej 321: ((ap->a_flags & (FSYNC_WAIT | FSYNC_DATAONLY)) == FSYNC_WAIT)
1.67 wrstuden 322: ? UPDATE_WAIT : 0);
323:
324: if (error == 0 && ap->a_flags & FSYNC_CACHE) {
325: int l = 0;
326: VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &l, FWRITE,
327: ap->a_p->p_ucred, ap->a_p);
328: }
329:
330: return error;
1.33 fvdl 331: }
332:
1.20 fvdl 333: /*
334: * Synch an open file.
335: */
336: /* ARGSUSED */
1.33 fvdl 337: static int
338: ffs_full_fsync(v)
1.20 fvdl 339: void *v;
340: {
1.29 mycroft 341: struct vop_fsync_args /* {
1.20 fvdl 342: struct vnode *a_vp;
343: struct ucred *a_cred;
344: int a_flags;
1.46 chs 345: off_t a_offlo;
346: off_t a_offhi;
1.59 fvdl 347: struct proc *a_p;
1.20 fvdl 348: } */ *ap = v;
349: struct vnode *vp = ap->a_vp;
350: struct buf *bp, *nbp;
1.47 fvdl 351: int s, error, passes, skipmeta, inodedeps_only, waitfor;
1.24 fvdl 352:
1.20 fvdl 353: if (vp->v_type == VBLK &&
354: vp->v_specmountpoint != NULL &&
355: (vp->v_specmountpoint->mnt_flag & MNT_SOFTDEP))
356: softdep_fsync_mountdev(vp);
1.21 perseant 357:
1.47 fvdl 358: inodedeps_only = DOINGSOFTDEP(vp) && (ap->a_flags & FSYNC_RECLAIM)
1.48 thorpej 359: && vp->v_uobj.uo_npages == 0 && LIST_EMPTY(&vp->v_dirtyblkhd);
1.47 fvdl 360:
1.35 chs 361: /*
362: * Flush all dirty data associated with a vnode.
1.20 fvdl 363: */
1.35 chs 364:
1.42 chs 365: if (vp->v_type == VREG) {
1.46 chs 366: simple_lock(&vp->v_interlock);
367: error = VOP_PUTPAGES(vp, 0, 0, PGO_ALLPAGES | PGO_CLEANIT |
1.35 chs 368: ((ap->a_flags & FSYNC_WAIT) ? PGO_SYNCIO : 0));
1.39 chs 369: if (error) {
370: return error;
371: }
1.35 chs 372: }
373:
1.20 fvdl 374: passes = NIADDR + 1;
375: skipmeta = 0;
1.61 kleink 376: if (ap->a_flags & FSYNC_WAIT)
1.20 fvdl 377: skipmeta = 1;
378: s = splbio();
1.35 chs 379:
1.20 fvdl 380: loop:
1.35 chs 381: LIST_FOREACH(bp, &vp->v_dirtyblkhd, b_vnbufs)
1.20 fvdl 382: bp->b_flags &= ~B_SCANNED;
1.29 mycroft 383: for (bp = LIST_FIRST(&vp->v_dirtyblkhd); bp; bp = nbp) {
384: nbp = LIST_NEXT(bp, b_vnbufs);
1.63 dbj 385: simple_lock(&bp->b_interlock);
386: if (bp->b_flags & (B_BUSY | B_SCANNED)) {
387: simple_unlock(&bp->b_interlock);
1.20 fvdl 388: continue;
1.63 dbj 389: }
1.20 fvdl 390: if ((bp->b_flags & B_DELWRI) == 0)
391: panic("ffs_fsync: not dirty");
1.63 dbj 392: if (skipmeta && bp->b_lblkno < 0) {
393: simple_unlock(&bp->b_interlock);
1.20 fvdl 394: continue;
1.63 dbj 395: }
396: simple_unlock(&bp->b_interlock);
1.20 fvdl 397: bp->b_flags |= B_BUSY | B_VFLUSH | B_SCANNED;
398: splx(s);
399: /*
400: * On our final pass through, do all I/O synchronously
401: * so that we can find out if our flush is failing
402: * because of write errors.
403: */
404: if (passes > 0 || !(ap->a_flags & FSYNC_WAIT))
405: (void) bawrite(bp);
406: else if ((error = bwrite(bp)) != 0)
407: return (error);
408: s = splbio();
409: /*
410: * Since we may have slept during the I/O, we need
411: * to start from a known point.
412: */
1.29 mycroft 413: nbp = LIST_FIRST(&vp->v_dirtyblkhd);
1.20 fvdl 414: }
1.61 kleink 415: if (skipmeta) {
1.20 fvdl 416: skipmeta = 0;
417: goto loop;
418: }
419: if (ap->a_flags & FSYNC_WAIT) {
1.54 pk 420: simple_lock(&global_v_numoutput_slock);
1.20 fvdl 421: while (vp->v_numoutput) {
422: vp->v_flag |= VBWAIT;
1.54 pk 423: (void) ltsleep(&vp->v_numoutput, PRIBIO + 1,
424: "ffsfsync", 0, &global_v_numoutput_slock);
1.20 fvdl 425: }
1.54 pk 426: simple_unlock(&global_v_numoutput_slock);
1.29 mycroft 427: splx(s);
1.20 fvdl 428:
1.69 ! perry 429: /*
1.20 fvdl 430: * Ensure that any filesystem metadata associated
431: * with the vnode has been written.
432: */
1.31 mycroft 433: if ((error = softdep_sync_metadata(ap)) != 0)
1.20 fvdl 434: return (error);
1.29 mycroft 435:
1.20 fvdl 436: s = splbio();
1.29 mycroft 437: if (!LIST_EMPTY(&vp->v_dirtyblkhd)) {
438: /*
439: * Block devices associated with filesystems may
440: * have new I/O requests posted for them even if
441: * the vnode is locked, so no amount of trying will
442: * get them clean. Thus we give block devices a
443: * good effort, then just give up. For all other file
444: * types, go around and try again until it is clean.
445: */
446: if (passes > 0) {
447: passes--;
448: goto loop;
449: }
1.20 fvdl 450: #ifdef DIAGNOSTIC
1.29 mycroft 451: if (vp->v_type != VBLK)
452: vprint("ffs_fsync: dirty", vp);
1.20 fvdl 453: #endif
1.29 mycroft 454: }
455: }
456: splx(s);
1.47 fvdl 457:
458: if (inodedeps_only)
459: waitfor = 0;
460: else
461: waitfor = (ap->a_flags & FSYNC_WAIT) ? UPDATE_WAIT : 0;
1.67 wrstuden 462: error = VOP_UPDATE(vp, NULL, NULL, waitfor);
463:
1.68 wrstuden 464: if (error == 0 && ap->a_flags & FSYNC_CACHE) {
1.67 wrstuden 465: int i = 0;
466: VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &i, FWRITE,
467: ap->a_p->p_ucred, ap->a_p);
468: }
469:
470: return error;
1.20 fvdl 471: }
1.1 mycroft 472:
473: /*
474: * Reclaim an inode so that it can be used for other purposes.
475: */
476: int
1.6 christos 477: ffs_reclaim(v)
478: void *v;
479: {
1.1 mycroft 480: struct vop_reclaim_args /* {
481: struct vnode *a_vp;
1.59 fvdl 482: struct proc *a_p;
1.6 christos 483: } */ *ap = v;
1.26 augustss 484: struct vnode *vp = ap->a_vp;
1.56 fvdl 485: struct inode *ip = VTOI(vp);
486: struct ufsmount *ump = ip->i_ump;
1.1 mycroft 487: int error;
488:
1.59 fvdl 489: if ((error = ufs_reclaim(vp, ap->a_p)) != 0)
1.1 mycroft 490: return (error);
1.57 fvdl 491: if (ip->i_din.ffs1_din != NULL) {
492: if (ump->um_fstype == UFS1)
493: pool_put(&ffs_dinode1_pool, ip->i_din.ffs1_din);
494: else
495: pool_put(&ffs_dinode2_pool, ip->i_din.ffs2_din);
496: }
1.16 thorpej 497: /*
498: * XXX MFS ends up here, too, to free an inode. Should we create
499: * XXX a separate pool for MFS inodes?
500: */
501: pool_put(&ffs_inode_pool, vp->v_data);
1.1 mycroft 502: vp->v_data = NULL;
503: return (0);
1.35 chs 504: }
505:
1.39 chs 506: int
507: ffs_getpages(void *v)
508: {
509: struct vop_getpages_args /* {
510: struct vnode *a_vp;
511: voff_t a_offset;
512: struct vm_page **a_m;
513: int *a_count;
514: int a_centeridx;
515: vm_prot_t a_access_type;
516: int a_advice;
517: int a_flags;
518: } */ *ap = v;
519: struct vnode *vp = ap->a_vp;
520: struct inode *ip = VTOI(vp);
521: struct fs *fs = ip->i_fs;
522:
523: /*
524: * don't allow a softdep write to create pages for only part of a block.
525: * the dependency tracking requires that all pages be in memory for
526: * a block involved in a dependency.
527: */
528:
529: if (ap->a_flags & PGO_OVERWRITE &&
530: (blkoff(fs, ap->a_offset) != 0 ||
531: blkoff(fs, *ap->a_count << PAGE_SHIFT) != 0) &&
532: DOINGSOFTDEP(ap->a_vp)) {
533: if ((ap->a_flags & PGO_LOCKED) == 0) {
1.46 chs 534: simple_unlock(&vp->v_interlock);
1.39 chs 535: }
536: return EINVAL;
537: }
538: return genfs_getpages(v);
1.49 chs 539: }
540:
541: int
542: ffs_putpages(void *v)
543: {
544: struct vop_putpages_args /* {
545: struct vnode *a_vp;
546: voff_t a_offlo;
547: voff_t a_offhi;
548: int a_flags;
549: } */ *ap = v;
550: struct vnode *vp = ap->a_vp;
551: struct uvm_object *uobj = &vp->v_uobj;
552: struct inode *ip = VTOI(vp);
553: struct fs *fs = ip->i_fs;
554: struct vm_page *pg;
555: off_t off;
556:
557: if (!DOINGSOFTDEP(vp) || (ap->a_flags & PGO_CLEANIT) == 0) {
558: return genfs_putpages(v);
559: }
560:
561: /*
562: * for softdep files, force the pages in a block to be written together.
563: * if we're the pagedaemon and we would have to wait for other pages,
564: * just fail the request. the pagedaemon will pick a different page.
565: */
566:
567: ap->a_offlo &= ~fs->fs_qbmask;
568: ap->a_offhi = blkroundup(fs, ap->a_offhi);
569: if (curproc == uvm.pagedaemon_proc) {
570: for (off = ap->a_offlo; off < ap->a_offhi; off += PAGE_SIZE) {
571: pg = uvm_pagelookup(uobj, off);
572:
573: /*
574: * we only have missing pages here because the
575: * calculation of offhi above doesn't account for
576: * fragments. so once we see one missing page,
577: * the rest should be missing as well, but we'll
578: * check for the rest just to be paranoid.
579: */
580:
581: if (pg == NULL) {
582: continue;
583: }
584: if (pg->flags & PG_BUSY) {
585: simple_unlock(&uobj->vmobjlock);
586: return EBUSY;
587: }
588: }
589: }
590: return genfs_putpages(v);
1.39 chs 591: }
592:
1.35 chs 593: /*
594: * Return the last logical file offset that should be written for this file
595: * if we're doing a write that ends at "size".
596: */
1.39 chs 597:
598: void
1.55 perseant 599: ffs_gop_size(struct vnode *vp, off_t size, off_t *eobp, int flags)
1.35 chs 600: {
1.39 chs 601: struct inode *ip = VTOI(vp);
1.35 chs 602: struct fs *fs = ip->i_fs;
1.52 fvdl 603: daddr_t olbn, nlbn;
1.55 perseant 604:
605: KASSERT(flags & (GOP_SIZE_READ | GOP_SIZE_WRITE));
1.69 ! perry 606: KASSERT((flags & (GOP_SIZE_READ | GOP_SIZE_WRITE))
1.55 perseant 607: != (GOP_SIZE_READ | GOP_SIZE_WRITE));
1.35 chs 608:
1.56 fvdl 609: olbn = lblkno(fs, ip->i_size);
1.39 chs 610: nlbn = lblkno(fs, size);
1.35 chs 611: if (nlbn < NDADDR && olbn <= nlbn) {
1.39 chs 612: *eobp = fragroundup(fs, size);
1.35 chs 613: } else {
1.39 chs 614: *eobp = blkroundup(fs, size);
1.35 chs 615: }
1.1 mycroft 616: }
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