inode.c
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上传日期:2013-04-10
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文件大小:18k
- /*
- * linux/fs/ufs/inode.c
- *
- * Copyright (C) 1998
- * Daniel Pirkl <daniel.pirkl@email.cz>
- * Charles University, Faculty of Mathematics and Physics
- *
- * from
- *
- * linux/fs/ext2/inode.c
- *
- * Copyright (C) 1992, 1993, 1994, 1995
- * Remy Card (card@masi.ibp.fr)
- * Laboratoire MASI - Institut Blaise Pascal
- * Universite Pierre et Marie Curie (Paris VI)
- *
- * from
- *
- * linux/fs/minix/inode.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- *
- * Goal-directed block allocation by Stephen Tweedie (sct@dcs.ed.ac.uk), 1993
- * Big-endian to little-endian byte-swapping/bitmaps by
- * David S. Miller (davem@caip.rutgers.edu), 1995
- */
- #include <asm/uaccess.h>
- #include <asm/system.h>
- #include <linux/errno.h>
- #include <linux/fs.h>
- #include <linux/ufs_fs.h>
- #include <linux/sched.h>
- #include <linux/stat.h>
- #include <linux/string.h>
- #include <linux/locks.h>
- #include <linux/mm.h>
- #include <linux/smp_lock.h>
- #include "swab.h"
- #include "util.h"
- #undef UFS_INODE_DEBUG
- #undef UFS_INODE_DEBUG_MORE
- #ifdef UFS_INODE_DEBUG
- #define UFSD(x) printk("(%s, %d), %s: ", __FILE__, __LINE__, __FUNCTION__); printk x;
- #else
- #define UFSD(x)
- #endif
- static int ufs_block_to_path(struct inode *inode, long i_block, int offsets[4])
- {
- struct ufs_sb_private_info *uspi = inode->i_sb->u.ufs_sb.s_uspi;
- int ptrs = uspi->s_apb;
- int ptrs_bits = uspi->s_apbshift;
- const long direct_blocks = UFS_NDADDR,
- indirect_blocks = ptrs,
- double_blocks = (1 << (ptrs_bits * 2));
- int n = 0;
- if (i_block < 0) {
- ufs_warning(inode->i_sb, "ufs_block_to_path", "block < 0");
- } else if (i_block < direct_blocks) {
- offsets[n++] = i_block;
- } else if ((i_block -= direct_blocks) < indirect_blocks) {
- offsets[n++] = UFS_IND_BLOCK;
- offsets[n++] = i_block;
- } else if ((i_block -= indirect_blocks) < double_blocks) {
- offsets[n++] = UFS_DIND_BLOCK;
- offsets[n++] = i_block >> ptrs_bits;
- offsets[n++] = i_block & (ptrs - 1);
- } else if (((i_block -= double_blocks) >> (ptrs_bits * 2)) < ptrs) {
- offsets[n++] = UFS_TIND_BLOCK;
- offsets[n++] = i_block >> (ptrs_bits * 2);
- offsets[n++] = (i_block >> ptrs_bits) & (ptrs - 1);
- offsets[n++] = i_block & (ptrs - 1);
- } else {
- ufs_warning(inode->i_sb, "ufs_block_to_path", "block > big");
- }
- return n;
- }
- int ufs_frag_map(struct inode *inode, int frag)
- {
- struct super_block *sb = inode->i_sb;
- struct ufs_sb_private_info *uspi = sb->u.ufs_sb.s_uspi;
- int mask = uspi->s_apbmask>>uspi->s_fpbshift;
- int shift = uspi->s_apbshift-uspi->s_fpbshift;
- int offsets[4], *p;
- int depth = ufs_block_to_path(inode, frag >> uspi->s_fpbshift, offsets);
- int ret = 0;
- u32 block;
- if (depth == 0)
- return 0;
- p = offsets;
- lock_kernel();
- block = inode->u.ufs_i.i_u1.i_data[*p++];
- if (!block)
- goto out;
- while (--depth) {
- struct buffer_head *bh;
- int n = *p++;
- bh = sb_bread(sb, uspi->s_sbbase + fs32_to_cpu(sb, block)+(n>>shift));
- if (!bh)
- goto out;
- block = ((u32*) bh->b_data)[n & mask];
- brelse (bh);
- if (!block)
- goto out;
- }
- ret = uspi->s_sbbase + fs32_to_cpu(sb, block) + (frag & uspi->s_fpbmask);
- out:
- unlock_kernel();
- return ret;
- }
- static struct buffer_head * ufs_inode_getfrag (struct inode *inode,
- unsigned int fragment, unsigned int new_fragment,
- unsigned int required, int *err, int metadata, long *phys, int *new)
- {
- struct super_block * sb;
- struct ufs_sb_private_info * uspi;
- struct buffer_head * result;
- unsigned block, blockoff, lastfrag, lastblock, lastblockoff;
- unsigned tmp, goal;
- u32 * p, * p2;
- UFSD(("ENTER, ino %lu, fragment %u, new_fragment %u, required %un",
- inode->i_ino, fragment, new_fragment, required))
- sb = inode->i_sb;
- uspi = sb->u.ufs_sb.s_uspi;
- block = ufs_fragstoblks (fragment);
- blockoff = ufs_fragnum (fragment);
- p = inode->u.ufs_i.i_u1.i_data + block;
- goal = 0;
- repeat:
- tmp = fs32_to_cpu(sb, *p);
- lastfrag = inode->u.ufs_i.i_lastfrag;
- if (tmp && fragment < lastfrag) {
- if (metadata) {
- result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
- if (tmp == fs32_to_cpu(sb, *p)) {
- UFSD(("EXIT, result %un", tmp + blockoff))
- return result;
- }
- brelse (result);
- goto repeat;
- } else {
- *phys = tmp;
- return NULL;
- }
- }
- lastblock = ufs_fragstoblks (lastfrag);
- lastblockoff = ufs_fragnum (lastfrag);
- /*
- * We will extend file into new block beyond last allocated block
- */
- if (lastblock < block) {
- /*
- * We must reallocate last allocated block
- */
- if (lastblockoff) {
- p2 = inode->u.ufs_i.i_u1.i_data + lastblock;
- tmp = ufs_new_fragments (inode, p2, lastfrag,
- fs32_to_cpu(sb, *p2), uspi->s_fpb - lastblockoff, err);
- if (!tmp) {
- if (lastfrag != inode->u.ufs_i.i_lastfrag)
- goto repeat;
- else
- return NULL;
- }
- lastfrag = inode->u.ufs_i.i_lastfrag;
-
- }
- goal = fs32_to_cpu(sb, inode->u.ufs_i.i_u1.i_data[lastblock]) + uspi->s_fpb;
- tmp = ufs_new_fragments (inode, p, fragment - blockoff,
- goal, required + blockoff, err);
- }
- /*
- * We will extend last allocated block
- */
- else if (lastblock == block) {
- tmp = ufs_new_fragments (inode, p, fragment - (blockoff - lastblockoff),
- fs32_to_cpu(sb, *p), required + (blockoff - lastblockoff), err);
- }
- /*
- * We will allocate new block before last allocated block
- */
- else /* (lastblock > block) */ {
- if (lastblock && (tmp = fs32_to_cpu(sb, inode->u.ufs_i.i_u1.i_data[lastblock-1])))
- goal = tmp + uspi->s_fpb;
- tmp = ufs_new_fragments (inode, p, fragment - blockoff,
- goal, uspi->s_fpb, err);
- }
- if (!tmp) {
- if ((!blockoff && *p) ||
- (blockoff && lastfrag != inode->u.ufs_i.i_lastfrag))
- goto repeat;
- *err = -ENOSPC;
- return NULL;
- }
- /* The nullification of framgents done in ufs/balloc.c is
- * something I don't have the stomache to move into here right
- * now. -DaveM
- */
- if (metadata) {
- result = sb_getblk(inode->i_sb, tmp + blockoff);
- } else {
- *phys = tmp;
- result = NULL;
- *err = 0;
- *new = 1;
- }
- inode->i_ctime = CURRENT_TIME;
- if (IS_SYNC(inode))
- ufs_sync_inode (inode);
- mark_inode_dirty(inode);
- UFSD(("EXIT, result %un", tmp + blockoff))
- return result;
- }
- static struct buffer_head * ufs_block_getfrag (struct inode *inode,
- struct buffer_head *bh, unsigned int fragment, unsigned int new_fragment,
- unsigned int blocksize, int * err, int metadata, long *phys, int *new)
- {
- struct super_block * sb;
- struct ufs_sb_private_info * uspi;
- struct buffer_head * result;
- unsigned tmp, goal, block, blockoff;
- u32 * p;
- sb = inode->i_sb;
- uspi = sb->u.ufs_sb.s_uspi;
- block = ufs_fragstoblks (fragment);
- blockoff = ufs_fragnum (fragment);
- UFSD(("ENTER, ino %lu, fragment %u, new_fragment %un", inode->i_ino, fragment, new_fragment))
- result = NULL;
- if (!bh)
- goto out;
- if (!buffer_uptodate(bh)) {
- ll_rw_block (READ, 1, &bh);
- wait_on_buffer (bh);
- if (!buffer_uptodate(bh))
- goto out;
- }
- p = (u32 *) bh->b_data + block;
- repeat:
- tmp = fs32_to_cpu(sb, *p);
- if (tmp) {
- if (metadata) {
- result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
- if (tmp == fs32_to_cpu(sb, *p))
- goto out;
- brelse (result);
- goto repeat;
- } else {
- *phys = tmp;
- goto out;
- }
- }
- if (block && (tmp = fs32_to_cpu(sb, ((u32*)bh->b_data)[block-1]) + uspi->s_fpb))
- goal = tmp + uspi->s_fpb;
- else
- goal = bh->b_blocknr + uspi->s_fpb;
- tmp = ufs_new_fragments (inode, p, ufs_blknum(new_fragment), goal, uspi->s_fpb, err);
- if (!tmp) {
- if (fs32_to_cpu(sb, *p))
- goto repeat;
- goto out;
- }
- /* The nullification of framgents done in ufs/balloc.c is
- * something I don't have the stomache to move into here right
- * now. -DaveM
- */
- if (metadata) {
- result = sb_getblk(sb, tmp + blockoff);
- } else {
- *phys = tmp;
- *new = 1;
- }
- mark_buffer_dirty(bh);
- if (IS_SYNC(inode)) {
- ll_rw_block (WRITE, 1, &bh);
- wait_on_buffer (bh);
- }
- inode->i_ctime = CURRENT_TIME;
- mark_inode_dirty(inode);
- out:
- brelse (bh);
- UFSD(("EXIT, result %un", tmp + blockoff))
- return result;
- }
- static int ufs_getfrag_block (struct inode *inode, long fragment, struct buffer_head *bh_result, int create)
- {
- struct super_block * sb;
- struct ufs_sb_private_info * uspi;
- struct buffer_head * bh;
- int ret, err, new;
- unsigned long ptr, phys;
-
- sb = inode->i_sb;
- uspi = sb->u.ufs_sb.s_uspi;
- if (!create) {
- phys = ufs_frag_map(inode, fragment);
- if (phys) {
- bh_result->b_dev = inode->i_dev;
- bh_result->b_blocknr = phys;
- bh_result->b_state |= (1UL << BH_Mapped);
- }
- return 0;
- }
- err = -EIO;
- new = 0;
- ret = 0;
- bh = NULL;
- lock_kernel();
- UFSD(("ENTER, ino %lu, fragment %un", inode->i_ino, fragment))
- if (fragment < 0)
- goto abort_negative;
- if (fragment >
- ((UFS_NDADDR + uspi->s_apb + uspi->s_2apb + uspi->s_3apb)
- << uspi->s_fpbshift))
- goto abort_too_big;
- err = 0;
- ptr = fragment;
-
- /*
- * ok, these macros clean the logic up a bit and make
- * it much more readable:
- */
- #define GET_INODE_DATABLOCK(x)
- ufs_inode_getfrag(inode, x, fragment, 1, &err, 0, &phys, &new)
- #define GET_INODE_PTR(x)
- ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, 1, NULL, NULL)
- #define GET_INDIRECT_DATABLOCK(x)
- ufs_block_getfrag(inode, bh, x, fragment, sb->s_blocksize,
- &err, 0, &phys, &new);
- #define GET_INDIRECT_PTR(x)
- ufs_block_getfrag(inode, bh, x, fragment, sb->s_blocksize,
- &err, 1, NULL, NULL);
- if (ptr < UFS_NDIR_FRAGMENT) {
- bh = GET_INODE_DATABLOCK(ptr);
- goto out;
- }
- ptr -= UFS_NDIR_FRAGMENT;
- if (ptr < (1 << (uspi->s_apbshift + uspi->s_fpbshift))) {
- bh = GET_INODE_PTR(UFS_IND_FRAGMENT + (ptr >> uspi->s_apbshift));
- goto get_indirect;
- }
- ptr -= 1 << (uspi->s_apbshift + uspi->s_fpbshift);
- if (ptr < (1 << (uspi->s_2apbshift + uspi->s_fpbshift))) {
- bh = GET_INODE_PTR(UFS_DIND_FRAGMENT + (ptr >> uspi->s_2apbshift));
- goto get_double;
- }
- ptr -= 1 << (uspi->s_2apbshift + uspi->s_fpbshift);
- bh = GET_INODE_PTR(UFS_TIND_FRAGMENT + (ptr >> uspi->s_3apbshift));
- bh = GET_INDIRECT_PTR((ptr >> uspi->s_2apbshift) & uspi->s_apbmask);
- get_double:
- bh = GET_INDIRECT_PTR((ptr >> uspi->s_apbshift) & uspi->s_apbmask);
- get_indirect:
- bh = GET_INDIRECT_DATABLOCK(ptr & uspi->s_apbmask);
- #undef GET_INODE_DATABLOCK
- #undef GET_INODE_PTR
- #undef GET_INDIRECT_DATABLOCK
- #undef GET_INDIRECT_PTR
- out:
- if (err)
- goto abort;
- bh_result->b_dev = inode->i_dev;
- bh_result->b_blocknr = phys;
- bh_result->b_state |= (1UL << BH_Mapped);
- if (new)
- bh_result->b_state |= (1UL << BH_New);
- abort:
- unlock_kernel();
- return err;
- abort_negative:
- ufs_warning(sb, "ufs_get_block", "block < 0");
- goto abort;
- abort_too_big:
- ufs_warning(sb, "ufs_get_block", "block > big");
- goto abort;
- }
- struct buffer_head *ufs_getfrag(struct inode *inode, unsigned int fragment,
- int create, int *err)
- {
- struct buffer_head dummy;
- int error;
- dummy.b_state = 0;
- dummy.b_blocknr = -1000;
- error = ufs_getfrag_block(inode, fragment, &dummy, create);
- *err = error;
- if (!error && buffer_mapped(&dummy)) {
- struct buffer_head *bh;
- bh = sb_getblk(inode->i_sb, dummy.b_blocknr);
- if (buffer_new(&dummy)) {
- memset(bh->b_data, 0, inode->i_sb->s_blocksize);
- mark_buffer_uptodate(bh, 1);
- mark_buffer_dirty(bh);
- }
- return bh;
- }
- return NULL;
- }
- struct buffer_head * ufs_bread (struct inode * inode, unsigned fragment,
- int create, int * err)
- {
- struct buffer_head * bh;
- UFSD(("ENTER, ino %lu, fragment %un", inode->i_ino, fragment))
- bh = ufs_getfrag (inode, fragment, create, err);
- if (!bh || buffer_uptodate(bh))
- return bh;
- ll_rw_block (READ, 1, &bh);
- wait_on_buffer (bh);
- if (buffer_uptodate(bh))
- return bh;
- brelse (bh);
- *err = -EIO;
- return NULL;
- }
- static int ufs_writepage(struct page *page)
- {
- return block_write_full_page(page,ufs_getfrag_block);
- }
- static int ufs_readpage(struct file *file, struct page *page)
- {
- return block_read_full_page(page,ufs_getfrag_block);
- }
- static int ufs_prepare_write(struct file *file, struct page *page, unsigned from, unsigned to)
- {
- return block_prepare_write(page,from,to,ufs_getfrag_block);
- }
- static int ufs_bmap(struct address_space *mapping, long block)
- {
- return generic_block_bmap(mapping,block,ufs_getfrag_block);
- }
- struct address_space_operations ufs_aops = {
- readpage: ufs_readpage,
- writepage: ufs_writepage,
- sync_page: block_sync_page,
- prepare_write: ufs_prepare_write,
- commit_write: generic_commit_write,
- bmap: ufs_bmap
- };
- void ufs_read_inode (struct inode * inode)
- {
- struct super_block * sb;
- struct ufs_sb_private_info * uspi;
- struct ufs_inode * ufs_inode;
- struct buffer_head * bh;
- unsigned i;
- unsigned flags;
-
- UFSD(("ENTER, ino %lun", inode->i_ino))
-
- sb = inode->i_sb;
- uspi = sb->u.ufs_sb.s_uspi;
- flags = sb->u.ufs_sb.s_flags;
- if (inode->i_ino < UFS_ROOTINO ||
- inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) {
- ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)n", inode->i_ino);
- goto bad_inode;
- }
-
- bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino));
- if (!bh) {
- ufs_warning (sb, "ufs_read_inode", "unable to read inode %lun", inode->i_ino);
- goto bad_inode;
- }
- ufs_inode = (struct ufs_inode *) (bh->b_data + sizeof(struct ufs_inode) * ufs_inotofsbo(inode->i_ino));
- /*
- * Copy data to the in-core inode.
- */
- inode->i_mode = fs16_to_cpu(sb, ufs_inode->ui_mode);
- inode->i_nlink = fs16_to_cpu(sb, ufs_inode->ui_nlink);
- if (inode->i_nlink == 0)
- ufs_error (sb, "ufs_read_inode", "inode %lu has zero nlinkn", inode->i_ino);
-
- /*
- * Linux now has 32-bit uid and gid, so we can support EFT.
- */
- inode->i_uid = ufs_get_inode_uid(sb, ufs_inode);
- inode->i_gid = ufs_get_inode_gid(sb, ufs_inode);
- inode->i_size = fs64_to_cpu(sb, ufs_inode->ui_size);
- inode->i_atime = fs32_to_cpu(sb, ufs_inode->ui_atime.tv_sec);
- inode->i_ctime = fs32_to_cpu(sb, ufs_inode->ui_ctime.tv_sec);
- inode->i_mtime = fs32_to_cpu(sb, ufs_inode->ui_mtime.tv_sec);
- inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks);
- inode->i_blksize = PAGE_SIZE; /* This is the optimal IO size (for stat) */
- inode->i_version = ++event;
- inode->u.ufs_i.i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags);
- inode->u.ufs_i.i_gen = fs32_to_cpu(sb, ufs_inode->ui_gen);
- inode->u.ufs_i.i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow);
- inode->u.ufs_i.i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag);
- inode->u.ufs_i.i_lastfrag = (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift;
-
- if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
- ;
- else if (inode->i_blocks) {
- for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++)
- inode->u.ufs_i.i_u1.i_data[i] = ufs_inode->ui_u2.ui_addr.ui_db[i];
- }
- else {
- for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++)
- inode->u.ufs_i.i_u1.i_symlink[i] = ufs_inode->ui_u2.ui_symlink[i];
- }
- if (S_ISREG(inode->i_mode)) {
- inode->i_op = &ufs_file_inode_operations;
- inode->i_fop = &ufs_file_operations;
- inode->i_mapping->a_ops = &ufs_aops;
- } else if (S_ISDIR(inode->i_mode)) {
- inode->i_op = &ufs_dir_inode_operations;
- inode->i_fop = &ufs_dir_operations;
- } else if (S_ISLNK(inode->i_mode)) {
- if (!inode->i_blocks)
- inode->i_op = &ufs_fast_symlink_inode_operations;
- else {
- inode->i_op = &page_symlink_inode_operations;
- inode->i_mapping->a_ops = &ufs_aops;
- }
- } else
- init_special_inode(inode, inode->i_mode,
- fs32_to_cpu(sb, ufs_inode->ui_u2.ui_addr.ui_db[0]));
- brelse (bh);
- UFSD(("EXITn"))
- return;
- bad_inode:
- make_bad_inode(inode);
- return;
- }
- static int ufs_update_inode(struct inode * inode, int do_sync)
- {
- struct super_block * sb;
- struct ufs_sb_private_info * uspi;
- struct buffer_head * bh;
- struct ufs_inode * ufs_inode;
- unsigned i;
- unsigned flags;
- UFSD(("ENTER, ino %lun", inode->i_ino))
- sb = inode->i_sb;
- uspi = sb->u.ufs_sb.s_uspi;
- flags = sb->u.ufs_sb.s_flags;
- if (inode->i_ino < UFS_ROOTINO ||
- inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) {
- ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)n", inode->i_ino);
- return -1;
- }
- bh = sb_bread(sb, ufs_inotofsba(inode->i_ino));
- if (!bh) {
- ufs_warning (sb, "ufs_read_inode", "unable to read inode %lun", inode->i_ino);
- return -1;
- }
- ufs_inode = (struct ufs_inode *) (bh->b_data + ufs_inotofsbo(inode->i_ino) * sizeof(struct ufs_inode));
- ufs_inode->ui_mode = cpu_to_fs16(sb, inode->i_mode);
- ufs_inode->ui_nlink = cpu_to_fs16(sb, inode->i_nlink);
- ufs_set_inode_uid(sb, ufs_inode, inode->i_uid);
- ufs_set_inode_gid(sb, ufs_inode, inode->i_gid);
-
- ufs_inode->ui_size = cpu_to_fs64(sb, inode->i_size);
- ufs_inode->ui_atime.tv_sec = cpu_to_fs32(sb, inode->i_atime);
- ufs_inode->ui_atime.tv_usec = 0;
- ufs_inode->ui_ctime.tv_sec = cpu_to_fs32(sb, inode->i_ctime);
- ufs_inode->ui_ctime.tv_usec = 0;
- ufs_inode->ui_mtime.tv_sec = cpu_to_fs32(sb, inode->i_mtime);
- ufs_inode->ui_mtime.tv_usec = 0;
- ufs_inode->ui_blocks = cpu_to_fs32(sb, inode->i_blocks);
- ufs_inode->ui_flags = cpu_to_fs32(sb, inode->u.ufs_i.i_flags);
- ufs_inode->ui_gen = cpu_to_fs32(sb, inode->u.ufs_i.i_gen);
- if ((flags & UFS_UID_MASK) == UFS_UID_EFT) {
- ufs_inode->ui_u3.ui_sun.ui_shadow = cpu_to_fs32(sb, inode->u.ufs_i.i_shadow);
- ufs_inode->ui_u3.ui_sun.ui_oeftflag = cpu_to_fs32(sb, inode->u.ufs_i.i_oeftflag);
- }
- if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
- ufs_inode->ui_u2.ui_addr.ui_db[0] = cpu_to_fs32(sb, kdev_t_to_nr(inode->i_rdev));
- else if (inode->i_blocks) {
- for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++)
- ufs_inode->ui_u2.ui_addr.ui_db[i] = inode->u.ufs_i.i_u1.i_data[i];
- }
- else {
- for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++)
- ufs_inode->ui_u2.ui_symlink[i] = inode->u.ufs_i.i_u1.i_symlink[i];
- }
- if (!inode->i_nlink)
- memset (ufs_inode, 0, sizeof(struct ufs_inode));
-
- mark_buffer_dirty(bh);
- if (do_sync) {
- ll_rw_block (WRITE, 1, &bh);
- wait_on_buffer (bh);
- }
- brelse (bh);
-
- UFSD(("EXITn"))
- return 0;
- }
- void ufs_write_inode (struct inode * inode, int wait)
- {
- lock_kernel();
- ufs_update_inode (inode, wait);
- unlock_kernel();
- }
- int ufs_sync_inode (struct inode *inode)
- {
- return ufs_update_inode (inode, 1);
- }
- void ufs_delete_inode (struct inode * inode)
- {
- /*inode->u.ufs_i.i_dtime = CURRENT_TIME;*/
- lock_kernel();
- mark_inode_dirty(inode);
- ufs_update_inode(inode, IS_SYNC(inode));
- inode->i_size = 0;
- if (inode->i_blocks)
- ufs_truncate (inode);
- ufs_free_inode (inode);
- unlock_kernel();
- }