/* * sys_lfs_segclean: * * Mark the segment clean. * * 0 on success * -1/errno is return on error. */ int sys_lfs_segclean(struct lwp *l, const struct sys_lfs_segclean_args *uap, register_t *retval) { /* { syscallarg(fsid_t *) fsidp; syscallarg(u_long) segment; } */ struct lfs *fs; struct mount *mntp; fsid_t fsid; int error; unsigned long segnum; error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_LFS, KAUTH_REQ_SYSTEM_LFS_SEGCLEAN, NULL, NULL, NULL); if (error) return (error); if ((error = copyin(SCARG(uap, fsidp), &fsid, sizeof(fsid_t))) != 0) return (error); if ((mntp = vfs_getvfs(&fsid)) == NULL) return (ENOENT); fs = VFSTOULFS(mntp)->um_lfs; segnum = SCARG(uap, segment); if ((error = vfs_busy(mntp, NULL)) != 0) return (error); KERNEL_LOCK(1, NULL); lfs_seglock(fs, SEGM_PROT); error = lfs_do_segclean(fs, segnum); lfs_segunlock(fs); KERNEL_UNLOCK_ONE(NULL); vfs_unbusy(mntp, false, NULL); return error; }
int lfs_markv(struct proc *p, fsid_t *fsidp, BLOCK_INFO *blkiov, int blkcnt) { BLOCK_INFO *blkp; IFILE *ifp; struct buf *bp; struct inode *ip = NULL; struct lfs *fs; struct mount *mntp; struct vnode *vp = NULL; ino_t lastino; daddr_t b_daddr, v_daddr; int cnt, error; int do_again = 0; int numrefed = 0; ino_t maxino; size_t obsize; /* number of blocks/inodes that we have already bwrite'ed */ int nblkwritten, ninowritten; if ((mntp = vfs_getvfs(fsidp)) == NULL) return (ENOENT); fs = VFSTOULFS(mntp)->um_lfs; if (fs->lfs_ronly) return EROFS; maxino = (lfs_fragstoblks(fs, VTOI(fs->lfs_ivnode)->i_ffs1_blocks) - fs->lfs_cleansz - fs->lfs_segtabsz) * fs->lfs_ifpb; cnt = blkcnt; if ((error = vfs_busy(mntp, NULL)) != 0) return (error); /* * This seglock is just to prevent the fact that we might have to sleep * from allowing the possibility that our blocks might become * invalid. * * It is also important to note here that unless we specify SEGM_CKP, * any Ifile blocks that we might be asked to clean will never get * to the disk. */ lfs_seglock(fs, SEGM_CLEAN | SEGM_CKP | SEGM_SYNC); /* Mark blocks/inodes dirty. */ error = 0; /* these were inside the initialization for the for loop */ v_daddr = LFS_UNUSED_DADDR; lastino = LFS_UNUSED_INUM; nblkwritten = ninowritten = 0; for (blkp = blkiov; cnt--; ++blkp) { /* Bounds-check incoming data, avoid panic for failed VGET */ if (blkp->bi_inode <= 0 || blkp->bi_inode >= maxino) { error = EINVAL; goto err3; } /* * Get the IFILE entry (only once) and see if the file still * exists. */ if (lastino != blkp->bi_inode) { /* * Finish the old file, if there was one. The presence * of a usable vnode in vp is signaled by a valid v_daddr. */ if (v_daddr != LFS_UNUSED_DADDR) { lfs_vunref(vp); numrefed--; } /* * Start a new file */ lastino = blkp->bi_inode; if (blkp->bi_inode == LFS_IFILE_INUM) v_daddr = fs->lfs_idaddr; else { LFS_IENTRY(ifp, fs, blkp->bi_inode, bp); /* XXX fix for force write */ v_daddr = ifp->if_daddr; brelse(bp, 0); } if (v_daddr == LFS_UNUSED_DADDR) continue; /* Get the vnode/inode. */ error = lfs_fastvget(mntp, blkp->bi_inode, v_daddr, &vp, (blkp->bi_lbn == LFS_UNUSED_LBN ? blkp->bi_bp : NULL)); if (!error) { numrefed++; } if (error) { DLOG((DLOG_CLEAN, "lfs_markv: lfs_fastvget" " failed with %d (ino %d, segment %d)\n", error, blkp->bi_inode, lfs_dtosn(fs, blkp->bi_daddr))); /* * If we got EAGAIN, that means that the * Inode was locked. This is * recoverable: just clean the rest of * this segment, and let the cleaner try * again with another. (When the * cleaner runs again, this segment will * sort high on the list, since it is * now almost entirely empty.) But, we * still set v_daddr = LFS_UNUSED_ADDR * so as not to test this over and over * again. */ if (error == EAGAIN) { error = 0; do_again++; } #ifdef DIAGNOSTIC else if (error != ENOENT) panic("lfs_markv VFS_VGET FAILED"); #endif /* lastino = LFS_UNUSED_INUM; */ v_daddr = LFS_UNUSED_DADDR; vp = NULL; ip = NULL; continue; } ip = VTOI(vp); ninowritten++; } else if (v_daddr == LFS_UNUSED_DADDR) { /* * This can only happen if the vnode is dead (or * in any case we can't get it...e.g., it is * inlocked). Keep going. */ continue; } /* Past this point we are guaranteed that vp, ip are valid. */ /* Can't clean VU_DIROP directories in case of truncation */ /* XXX - maybe we should mark removed dirs specially? */ if (vp->v_type == VDIR && (vp->v_uflag & VU_DIROP)) { do_again++; continue; } /* If this BLOCK_INFO didn't contain a block, keep going. */ if (blkp->bi_lbn == LFS_UNUSED_LBN) { /* XXX need to make sure that the inode gets written in this case */ /* XXX but only write the inode if it's the right one */ if (blkp->bi_inode != LFS_IFILE_INUM) { LFS_IENTRY(ifp, fs, blkp->bi_inode, bp); if (ifp->if_daddr == blkp->bi_daddr) { mutex_enter(&lfs_lock); LFS_SET_UINO(ip, IN_CLEANING); mutex_exit(&lfs_lock); } brelse(bp, 0); } continue; } b_daddr = 0; if (VOP_BMAP(vp, blkp->bi_lbn, NULL, &b_daddr, NULL) || LFS_DBTOFSB(fs, b_daddr) != blkp->bi_daddr) { if (lfs_dtosn(fs, LFS_DBTOFSB(fs, b_daddr)) == lfs_dtosn(fs, blkp->bi_daddr)) { DLOG((DLOG_CLEAN, "lfs_markv: wrong da same seg: %llx vs %llx\n", (long long)blkp->bi_daddr, (long long)LFS_DBTOFSB(fs, b_daddr))); } do_again++; continue; } /* * Check block sizes. The blocks being cleaned come from * disk, so they should have the same size as their on-disk * counterparts. */ if (blkp->bi_lbn >= 0) obsize = lfs_blksize(fs, ip, blkp->bi_lbn); else obsize = fs->lfs_bsize; /* Check for fragment size change */ if (blkp->bi_lbn >= 0 && blkp->bi_lbn < ULFS_NDADDR) { obsize = ip->i_lfs_fragsize[blkp->bi_lbn]; } if (obsize != blkp->bi_size) { DLOG((DLOG_CLEAN, "lfs_markv: ino %d lbn %lld wrong" " size (%ld != %d), try again\n", blkp->bi_inode, (long long)blkp->bi_lbn, (long) obsize, blkp->bi_size)); do_again++; continue; } /* * If we get to here, then we are keeping the block. If * it is an indirect block, we want to actually put it * in the buffer cache so that it can be updated in the * finish_meta section. If it's not, we need to * allocate a fake buffer so that writeseg can perform * the copyin and write the buffer. */ if (ip->i_number != LFS_IFILE_INUM && blkp->bi_lbn >= 0) { /* Data Block */ bp = lfs_fakebuf(fs, vp, blkp->bi_lbn, blkp->bi_size, blkp->bi_bp); /* Pretend we used bread() to get it */ bp->b_blkno = LFS_FSBTODB(fs, blkp->bi_daddr); } else { /* Indirect block or ifile */ if (blkp->bi_size != fs->lfs_bsize && ip->i_number != LFS_IFILE_INUM) panic("lfs_markv: partial indirect block?" " size=%d\n", blkp->bi_size); bp = getblk(vp, blkp->bi_lbn, blkp->bi_size, 0, 0); if (!(bp->b_oflags & (BO_DONE|BO_DELWRI))) { /* * The block in question was not found * in the cache; i.e., the block that * getblk() returned is empty. So, we * can (and should) copy in the * contents, because we've already * determined that this was the right * version of this block on disk. * * And, it can't have changed underneath * us, because we have the segment lock. */ error = copyin(blkp->bi_bp, bp->b_data, blkp->bi_size); if (error) goto err2; } } if ((error = lfs_bwrite_ext(bp, BW_CLEAN)) != 0) goto err2; nblkwritten++; /* * XXX should account indirect blocks and ifile pages as well */ if (nblkwritten + lfs_lblkno(fs, ninowritten * sizeof (struct ulfs1_dinode)) > LFS_MARKV_MAX_BLOCKS) { DLOG((DLOG_CLEAN, "lfs_markv: writing %d blks %d inos\n", nblkwritten, ninowritten)); lfs_segwrite(mntp, SEGM_CLEAN); nblkwritten = ninowritten = 0; } } /* * Finish the old file, if there was one */ if (v_daddr != LFS_UNUSED_DADDR) { lfs_vunref(vp); numrefed--; } #ifdef DIAGNOSTIC if (numrefed != 0) panic("lfs_markv: numrefed=%d", numrefed); #endif DLOG((DLOG_CLEAN, "lfs_markv: writing %d blks %d inos (check point)\n", nblkwritten, ninowritten)); /* * The last write has to be SEGM_SYNC, because of calling semantics. * It also has to be SEGM_CKP, because otherwise we could write * over the newly cleaned data contained in a checkpoint, and then * we'd be unhappy at recovery time. */ lfs_segwrite(mntp, SEGM_CLEAN | SEGM_CKP | SEGM_SYNC); lfs_segunlock(fs); vfs_unbusy(mntp, false, NULL); if (error) return (error); else if (do_again) return EAGAIN; return 0; err2: DLOG((DLOG_CLEAN, "lfs_markv err2\n")); /* * XXX we're here because copyin() failed. * XXX it means that we can't trust the cleanerd. too bad. * XXX how can we recover from this? */ err3: /* * XXX should do segwrite here anyway? */ if (v_daddr != LFS_UNUSED_DADDR) { lfs_vunref(vp); --numrefed; } lfs_segunlock(fs); vfs_unbusy(mntp, false, NULL); #ifdef DIAGNOSTIC if (numrefed != 0) panic("lfs_markv: numrefed=%d", numrefed); #endif return (error); }
int lfs_truncate(struct vnode *ovp, off_t length, int ioflag, kauth_cred_t cred) { daddr_t lastblock; struct inode *oip = VTOI(ovp); daddr_t bn, lbn, lastiblock[ULFS_NIADDR], indir_lbn[ULFS_NIADDR]; /* XXX ondisk32 */ int32_t newblks[ULFS_NDADDR + ULFS_NIADDR]; struct lfs *fs; struct buf *bp; int offset, size, level; daddr_t count, rcount; daddr_t blocksreleased = 0, real_released = 0; int i, nblocks; int aflags, error, allerror = 0; off_t osize; long lastseg; size_t bc; int obufsize, odb; int usepc; if (ovp->v_type == VCHR || ovp->v_type == VBLK || ovp->v_type == VFIFO || ovp->v_type == VSOCK) { KASSERT(oip->i_size == 0); return 0; } if (length < 0) return (EINVAL); /* * Just return and not update modification times. */ if (oip->i_size == length) { /* still do a uvm_vnp_setsize() as writesize may be larger */ uvm_vnp_setsize(ovp, length); return (0); } fs = oip->i_lfs; if (ovp->v_type == VLNK && (oip->i_size < fs->um_maxsymlinklen || (fs->um_maxsymlinklen == 0 && oip->i_ffs1_blocks == 0))) { #ifdef DIAGNOSTIC if (length != 0) panic("lfs_truncate: partial truncate of symlink"); #endif memset((char *)SHORTLINK(oip), 0, (u_int)oip->i_size); oip->i_size = oip->i_ffs1_size = 0; oip->i_flag |= IN_CHANGE | IN_UPDATE; return (lfs_update(ovp, NULL, NULL, 0)); } if (oip->i_size == length) { oip->i_flag |= IN_CHANGE | IN_UPDATE; return (lfs_update(ovp, NULL, NULL, 0)); } lfs_imtime(fs); osize = oip->i_size; usepc = (ovp->v_type == VREG && ovp != fs->lfs_ivnode); ASSERT_NO_SEGLOCK(fs); /* * Lengthen the size of the file. We must ensure that the * last byte of the file is allocated. Since the smallest * value of osize is 0, length will be at least 1. */ if (osize < length) { if (length > fs->um_maxfilesize) return (EFBIG); aflags = B_CLRBUF; if (ioflag & IO_SYNC) aflags |= B_SYNC; if (usepc) { if (lfs_lblkno(fs, osize) < ULFS_NDADDR && lfs_lblkno(fs, osize) != lfs_lblkno(fs, length) && lfs_blkroundup(fs, osize) != osize) { off_t eob; eob = lfs_blkroundup(fs, osize); uvm_vnp_setwritesize(ovp, eob); error = ulfs_balloc_range(ovp, osize, eob - osize, cred, aflags); if (error) { (void) lfs_truncate(ovp, osize, ioflag & IO_SYNC, cred); return error; } if (ioflag & IO_SYNC) { mutex_enter(ovp->v_interlock); VOP_PUTPAGES(ovp, trunc_page(osize & lfs_sb_getbmask(fs)), round_page(eob), PGO_CLEANIT | PGO_SYNCIO); } } uvm_vnp_setwritesize(ovp, length); error = ulfs_balloc_range(ovp, length - 1, 1, cred, aflags); if (error) { (void) lfs_truncate(ovp, osize, ioflag & IO_SYNC, cred); return error; } uvm_vnp_setsize(ovp, length); oip->i_flag |= IN_CHANGE | IN_UPDATE; KASSERT(ovp->v_size == oip->i_size); oip->i_lfs_hiblk = lfs_lblkno(fs, oip->i_size + lfs_sb_getbsize(fs) - 1) - 1; return (lfs_update(ovp, NULL, NULL, 0)); } else { error = lfs_reserve(fs, ovp, NULL, lfs_btofsb(fs, (ULFS_NIADDR + 2) << lfs_sb_getbshift(fs))); if (error) return (error); error = lfs_balloc(ovp, length - 1, 1, cred, aflags, &bp); lfs_reserve(fs, ovp, NULL, -lfs_btofsb(fs, (ULFS_NIADDR + 2) << lfs_sb_getbshift(fs))); if (error) return (error); oip->i_ffs1_size = oip->i_size = length; uvm_vnp_setsize(ovp, length); (void) VOP_BWRITE(bp->b_vp, bp); oip->i_flag |= IN_CHANGE | IN_UPDATE; oip->i_lfs_hiblk = lfs_lblkno(fs, oip->i_size + lfs_sb_getbsize(fs) - 1) - 1; return (lfs_update(ovp, NULL, NULL, 0)); } } if ((error = lfs_reserve(fs, ovp, NULL, lfs_btofsb(fs, (2 * ULFS_NIADDR + 3) << lfs_sb_getbshift(fs)))) != 0) return (error); /* * Shorten the size of the file. If the file is not being * truncated to a block boundary, the contents of the * partial block following the end of the file must be * zero'ed in case it ever becomes accessible again because * of subsequent file growth. Directories however are not * zero'ed as they should grow back initialized to empty. */ offset = lfs_blkoff(fs, length); lastseg = -1; bc = 0; if (ovp != fs->lfs_ivnode) lfs_seglock(fs, SEGM_PROT); if (offset == 0) { oip->i_size = oip->i_ffs1_size = length; } else if (!usepc) { lbn = lfs_lblkno(fs, length); aflags = B_CLRBUF; if (ioflag & IO_SYNC) aflags |= B_SYNC; error = lfs_balloc(ovp, length - 1, 1, cred, aflags, &bp); if (error) { lfs_reserve(fs, ovp, NULL, -lfs_btofsb(fs, (2 * ULFS_NIADDR + 3) << lfs_sb_getbshift(fs))); goto errout; } obufsize = bp->b_bufsize; odb = lfs_btofsb(fs, bp->b_bcount); oip->i_size = oip->i_ffs1_size = length; size = lfs_blksize(fs, oip, lbn); if (ovp->v_type != VDIR) memset((char *)bp->b_data + offset, 0, (u_int)(size - offset)); allocbuf(bp, size, 1); if ((bp->b_flags & B_LOCKED) != 0 && bp->b_iodone == NULL) { mutex_enter(&lfs_lock); locked_queue_bytes -= obufsize - bp->b_bufsize; mutex_exit(&lfs_lock); } if (bp->b_oflags & BO_DELWRI) { lfs_sb_addavail(fs, odb - lfs_btofsb(fs, size)); /* XXX shouldn't this wake up on lfs_availsleep? */ } (void) VOP_BWRITE(bp->b_vp, bp); } else { /* vp->v_type == VREG && length < osize && offset != 0 */ /* * When truncating a regular file down to a non-block-aligned * size, we must zero the part of last block which is past * the new EOF. We must synchronously flush the zeroed pages * to disk since the new pages will be invalidated as soon * as we inform the VM system of the new, smaller size. * We must do this before acquiring the GLOCK, since fetching * the pages will acquire the GLOCK internally. * So there is a window where another thread could see a whole * zeroed page past EOF, but that's life. */ daddr_t xlbn; voff_t eoz; aflags = ioflag & IO_SYNC ? B_SYNC : 0; error = ulfs_balloc_range(ovp, length - 1, 1, cred, aflags); if (error) { lfs_reserve(fs, ovp, NULL, -lfs_btofsb(fs, (2 * ULFS_NIADDR + 3) << lfs_sb_getbshift(fs))); goto errout; } xlbn = lfs_lblkno(fs, length); size = lfs_blksize(fs, oip, xlbn); eoz = MIN(lfs_lblktosize(fs, xlbn) + size, osize); ubc_zerorange(&ovp->v_uobj, length, eoz - length, UBC_UNMAP_FLAG(ovp)); if (round_page(eoz) > round_page(length)) { mutex_enter(ovp->v_interlock); error = VOP_PUTPAGES(ovp, round_page(length), round_page(eoz), PGO_CLEANIT | PGO_DEACTIVATE | ((ioflag & IO_SYNC) ? PGO_SYNCIO : 0)); if (error) { lfs_reserve(fs, ovp, NULL, -lfs_btofsb(fs, (2 * ULFS_NIADDR + 3) << lfs_sb_getbshift(fs))); goto errout; } } } genfs_node_wrlock(ovp); oip->i_size = oip->i_ffs1_size = length; uvm_vnp_setsize(ovp, length); /* * Calculate index into inode's block list of * last direct and indirect blocks (if any) * which we want to keep. Lastblock is -1 when * the file is truncated to 0. */ /* Avoid sign overflow - XXX assumes that off_t is a quad_t. */ if (length > QUAD_MAX - lfs_sb_getbsize(fs)) lastblock = lfs_lblkno(fs, QUAD_MAX - lfs_sb_getbsize(fs)); else lastblock = lfs_lblkno(fs, length + lfs_sb_getbsize(fs) - 1) - 1; lastiblock[SINGLE] = lastblock - ULFS_NDADDR; lastiblock[DOUBLE] = lastiblock[SINGLE] - LFS_NINDIR(fs); lastiblock[TRIPLE] = lastiblock[DOUBLE] - LFS_NINDIR(fs) * LFS_NINDIR(fs); nblocks = lfs_btofsb(fs, lfs_sb_getbsize(fs)); /* * Record changed file and block pointers before we start * freeing blocks. lastiblock values are also normalized to -1 * for calls to lfs_indirtrunc below. */ memcpy((void *)newblks, (void *)&oip->i_ffs1_db[0], sizeof newblks); for (level = TRIPLE; level >= SINGLE; level--) if (lastiblock[level] < 0) { newblks[ULFS_NDADDR+level] = 0; lastiblock[level] = -1; } for (i = ULFS_NDADDR - 1; i > lastblock; i--) newblks[i] = 0; oip->i_size = oip->i_ffs1_size = osize; error = lfs_vtruncbuf(ovp, lastblock + 1, false, 0); if (error && !allerror) allerror = error; /* * Indirect blocks first. */ indir_lbn[SINGLE] = -ULFS_NDADDR; indir_lbn[DOUBLE] = indir_lbn[SINGLE] - LFS_NINDIR(fs) - 1; indir_lbn[TRIPLE] = indir_lbn[DOUBLE] - LFS_NINDIR(fs) * LFS_NINDIR(fs) - 1; for (level = TRIPLE; level >= SINGLE; level--) { bn = oip->i_ffs1_ib[level]; if (bn != 0) { error = lfs_indirtrunc(oip, indir_lbn[level], bn, lastiblock[level], level, &count, &rcount, &lastseg, &bc); if (error) allerror = error; real_released += rcount; blocksreleased += count; if (lastiblock[level] < 0) { if (oip->i_ffs1_ib[level] > 0) real_released += nblocks; blocksreleased += nblocks; oip->i_ffs1_ib[level] = 0; lfs_blkfree(fs, oip, bn, lfs_sb_getbsize(fs), &lastseg, &bc); lfs_deregister_block(ovp, bn); } } if (lastiblock[level] >= 0) goto done; } /* * All whole direct blocks or frags. */ for (i = ULFS_NDADDR - 1; i > lastblock; i--) { long bsize, obsize; bn = oip->i_ffs1_db[i]; if (bn == 0) continue; bsize = lfs_blksize(fs, oip, i); if (oip->i_ffs1_db[i] > 0) { /* Check for fragment size changes */ obsize = oip->i_lfs_fragsize[i]; real_released += lfs_btofsb(fs, obsize); oip->i_lfs_fragsize[i] = 0; } else obsize = 0; blocksreleased += lfs_btofsb(fs, bsize); oip->i_ffs1_db[i] = 0; lfs_blkfree(fs, oip, bn, obsize, &lastseg, &bc); lfs_deregister_block(ovp, bn); } if (lastblock < 0) goto done; /* * Finally, look for a change in size of the * last direct block; release any frags. */ bn = oip->i_ffs1_db[lastblock]; if (bn != 0) { long oldspace, newspace; #if 0 long olddspace; #endif /* * Calculate amount of space we're giving * back as old block size minus new block size. */ oldspace = lfs_blksize(fs, oip, lastblock); #if 0 olddspace = oip->i_lfs_fragsize[lastblock]; #endif oip->i_size = oip->i_ffs1_size = length; newspace = lfs_blksize(fs, oip, lastblock); if (newspace == 0) panic("itrunc: newspace"); if (oldspace - newspace > 0) { blocksreleased += lfs_btofsb(fs, oldspace - newspace); } #if 0 if (bn > 0 && olddspace - newspace > 0) { /* No segment accounting here, just vnode */ real_released += lfs_btofsb(fs, olddspace - newspace); } #endif } done: /* Finish segment accounting corrections */ lfs_update_seguse(fs, oip, lastseg, bc); #ifdef DIAGNOSTIC for (level = SINGLE; level <= TRIPLE; level++) if ((newblks[ULFS_NDADDR + level] == 0) != ((oip->i_ffs1_ib[level]) == 0)) { panic("lfs itrunc1"); } for (i = 0; i < ULFS_NDADDR; i++) if ((newblks[i] == 0) != (oip->i_ffs1_db[i] == 0)) { panic("lfs itrunc2"); } if (length == 0 && (!LIST_EMPTY(&ovp->v_cleanblkhd) || !LIST_EMPTY(&ovp->v_dirtyblkhd))) panic("lfs itrunc3"); #endif /* DIAGNOSTIC */ /* * Put back the real size. */ oip->i_size = oip->i_ffs1_size = length; oip->i_lfs_effnblks -= blocksreleased; oip->i_ffs1_blocks -= real_released; mutex_enter(&lfs_lock); lfs_sb_addbfree(fs, blocksreleased); mutex_exit(&lfs_lock); #ifdef DIAGNOSTIC if (oip->i_size == 0 && (oip->i_ffs1_blocks != 0 || oip->i_lfs_effnblks != 0)) { printf("lfs_truncate: truncate to 0 but %d blks/%jd effblks\n", oip->i_ffs1_blocks, (intmax_t)oip->i_lfs_effnblks); panic("lfs_truncate: persistent blocks"); } #endif /* * If we truncated to zero, take us off the paging queue. */ mutex_enter(&lfs_lock); if (oip->i_size == 0 && oip->i_flags & IN_PAGING) { oip->i_flags &= ~IN_PAGING; TAILQ_REMOVE(&fs->lfs_pchainhd, oip, i_lfs_pchain); } mutex_exit(&lfs_lock); oip->i_flag |= IN_CHANGE; #if defined(LFS_QUOTA) || defined(LFS_QUOTA2) (void) lfs_chkdq(oip, -blocksreleased, NOCRED, 0); #endif lfs_reserve(fs, ovp, NULL, -lfs_btofsb(fs, (2 * ULFS_NIADDR + 3) << lfs_sb_getbshift(fs))); genfs_node_unlock(ovp); errout: oip->i_lfs_hiblk = lfs_lblkno(fs, oip->i_size + lfs_sb_getbsize(fs) - 1) - 1; if (ovp != fs->lfs_ivnode) lfs_segunlock(fs); return (allerror ? allerror : error); }