fedora core 6 1.2949 + vserver 2.2.0
[linux-2.6.git] / fs / udf / namei.c
index 67882bf..5134918 100644 (file)
@@ -4,11 +4,6 @@
  * PURPOSE
  *      Inode name handling routines for the OSTA-UDF(tm) filesystem.
  *
- * CONTACTS
- *      E-mail regarding any portion of the Linux UDF file system should be
- *      directed to the development team mailing list (run by majordomo):
- *              linux_udf@hpesjro.fc.hp.com
- *
  * COPYRIGHT
  *      This file is distributed under the terms of the GNU General Public
  *      License (GPL). Copies of the GPL can be obtained from:
@@ -119,7 +114,7 @@ int udf_write_fi(struct inode *inode, struct fileIdentDesc *cfi,
                crc = udf_crc(fibh->ebh->b_data, fibh->eoffset, crc);
        }
 
-       cfi->descTag.descCRC = cpu_to_le32(crc);
+       cfi->descTag.descCRC = cpu_to_le16(crc);
        cfi->descTag.descCRCLength = cpu_to_le16(crclen);
 
        for (i=0; i<16; i++)
@@ -154,64 +149,59 @@ udf_find_entry(struct inode *dir, struct dentry *dentry,
 {
        struct fileIdentDesc *fi=NULL;
        loff_t f_pos;
-       int block, namelen;
-       char name[UDF_NAME_LEN], fname[UDF_NAME_LEN];
+       int block, flen;
+       char fname[UDF_NAME_LEN];
        char *nameptr;
        uint8_t lfi;
        uint16_t liu;
-       loff_t size = (udf_ext0_offset(dir) + dir->i_size) >> 2;
-       lb_addr bloc, eloc;
-       uint32_t extoffset, elen, offset;
-       struct buffer_head *bh = NULL;
-
-       if (!dir)
-               return NULL;
-
-       if ( !(namelen = udf_put_filename(dir->i_sb, dentry->d_name.name, name, dentry->d_name.len)))
-               return NULL;
+       loff_t size;
+       kernel_lb_addr eloc;
+       uint32_t elen;
+       sector_t offset;
+       struct extent_position epos = { NULL, 0, { 0, 0}};
 
+       size = (udf_ext0_offset(dir) + dir->i_size) >> 2;
        f_pos = (udf_ext0_offset(dir) >> 2);
 
        fibh->soffset = fibh->eoffset = (f_pos & ((dir->i_sb->s_blocksize - 1) >> 2)) << 2;
        if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB)
                fibh->sbh = fibh->ebh = NULL;
        else if (inode_bmap(dir, f_pos >> (dir->i_sb->s_blocksize_bits - 2),
-               &bloc, &extoffset, &eloc, &elen, &offset, &bh) == (EXT_RECORDED_ALLOCATED >> 30))
+               &epos, &eloc, &elen, &offset) == (EXT_RECORDED_ALLOCATED >> 30))
        {
-               offset >>= dir->i_sb->s_blocksize_bits;
                block = udf_get_lb_pblock(dir->i_sb, eloc, offset);
                if ((++offset << dir->i_sb->s_blocksize_bits) < elen)
                {
                        if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_SHORT)
-                               extoffset -= sizeof(short_ad);
+                               epos.offset -= sizeof(short_ad);
                        else if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_LONG)
-                               extoffset -= sizeof(long_ad);
+                               epos.offset -= sizeof(long_ad);
                }
                else
                        offset = 0;
 
                if (!(fibh->sbh = fibh->ebh = udf_tread(dir->i_sb, block)))
                {
-                       udf_release_data(bh);
+                       brelse(epos.bh);
                        return NULL;
                }
        }
        else
        {
-               udf_release_data(bh);
+               brelse(epos.bh);
                return NULL;
        }
 
        while ( (f_pos < size) )
        {
-               fi = udf_fileident_read(dir, &f_pos, fibh, cfi, &bloc, &extoffset, &eloc, &elen, &offset, &bh);
+               fi = udf_fileident_read(dir, &f_pos, fibh, cfi, &epos, &eloc, &elen, &offset);
 
                if (!fi)
                {
                        if (fibh->sbh != fibh->ebh)
-                               udf_release_data(fibh->ebh);
-                       udf_release_data(fibh->sbh);
-                       udf_release_data(bh);
+                               brelse(fibh->ebh);
+                       brelse(fibh->sbh);
+                       brelse(epos.bh);
                        return NULL;
                }
 
@@ -253,16 +243,19 @@ udf_find_entry(struct inode *dir, struct dentry *dentry,
                if (!lfi)
                        continue;
 
-               if (udf_match(namelen, name, lfi, nameptr))
+               if ((flen = udf_get_filename(dir->i_sb, nameptr, fname, lfi)))
                {
-                       udf_release_data(bh);
-                       return fi;
+                       if (udf_match(flen, fname, dentry->d_name.len, dentry->d_name.name))
+                       {
+                               brelse(epos.bh);
+                               return fi;
+                       }
                }
        }
        if (fibh->sbh != fibh->ebh)
-               udf_release_data(fibh->ebh);
-       udf_release_data(fibh->sbh);
-       udf_release_data(bh);
+               brelse(fibh->ebh);
+       brelse(fibh->sbh);
+       brelse(epos.bh);
        return NULL;
 }
 
@@ -303,7 +296,7 @@ static struct dentry *
 udf_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
 {
        struct inode *inode = NULL;
-       struct fileIdentDesc cfi, *fi;
+       struct fileIdentDesc cfi;
        struct udf_fileident_bh fibh;
 
        if (dentry->d_name.len > UDF_NAME_LEN-2)
@@ -314,7 +307,7 @@ udf_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
        /* temporary shorthand for specifying files by inode number */
        if (!strncmp(dentry->d_name.name, ".B=", 3) )
        {
-               lb_addr lb = { 0, simple_strtoul(dentry->d_name.name+3, NULL, 0) };
+               kernel_lb_addr lb = { 0, simple_strtoul(dentry->d_name.name+3, NULL, 0) };
                inode = udf_iget(dir->i_sb, lb);
                if (!inode)
                {
@@ -325,11 +318,11 @@ udf_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
        else
 #endif /* UDF_RECOVERY */
 
-       if ((fi = udf_find_entry(dir, dentry, &fibh, &cfi)))
+       if (udf_find_entry(dir, dentry, &fibh, &cfi))
        {
                if (fibh.sbh != fibh.ebh)
-                       udf_release_data(fibh.ebh);
-               udf_release_data(fibh.sbh);
+                       brelse(fibh.ebh);
+               brelse(fibh.sbh);
 
                inode = udf_iget(dir->i_sb, lelb_to_cpu(cfi.icb.extLocation));
                if ( !inode )
@@ -353,15 +346,17 @@ udf_add_entry(struct inode *dir, struct dentry *dentry,
        char name[UDF_NAME_LEN], fname[UDF_NAME_LEN];
        int namelen;
        loff_t f_pos;
+       int flen;
        char *nameptr;
        loff_t size = (udf_ext0_offset(dir) + dir->i_size) >> 2;
        int nfidlen;
        uint8_t lfi;
        uint16_t liu;
        int block;
-       lb_addr bloc, eloc;
-       uint32_t extoffset, elen, offset;
-       struct buffer_head *bh = NULL;
+       kernel_lb_addr eloc;
+       uint32_t elen;
+       sector_t offset;
+       struct extent_position epos = { NULL, 0, { 0, 0 }};
 
        sb = dir->i_sb;
 
@@ -390,23 +385,22 @@ udf_add_entry(struct inode *dir, struct dentry *dentry,
        if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB)
                fibh->sbh = fibh->ebh = NULL;
        else if (inode_bmap(dir, f_pos >> (dir->i_sb->s_blocksize_bits - 2),
-               &bloc, &extoffset, &eloc, &elen, &offset, &bh) == (EXT_RECORDED_ALLOCATED >> 30))
+               &epos, &eloc, &elen, &offset) == (EXT_RECORDED_ALLOCATED >> 30))
        {
-               offset >>= dir->i_sb->s_blocksize_bits;
                block = udf_get_lb_pblock(dir->i_sb, eloc, offset);
                if ((++offset << dir->i_sb->s_blocksize_bits) < elen)
                {
                        if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_SHORT)
-                               extoffset -= sizeof(short_ad);
+                               epos.offset -= sizeof(short_ad);
                        else if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_LONG)
-                               extoffset -= sizeof(long_ad);
+                               epos.offset -= sizeof(long_ad);
                }
                else
                        offset = 0;
 
                if (!(fibh->sbh = fibh->ebh = udf_tread(dir->i_sb, block)))
                {
-                       udf_release_data(bh);
+                       brelse(epos.bh);
                        *err = -EIO;
                        return NULL;
                }
@@ -424,14 +418,14 @@ udf_add_entry(struct inode *dir, struct dentry *dentry,
 
        while ( (f_pos < size) )
        {
-               fi = udf_fileident_read(dir, &f_pos, fibh, cfi, &bloc, &extoffset, &eloc, &elen, &offset, &bh);
+               fi = udf_fileident_read(dir, &f_pos, fibh, cfi, &epos, &eloc, &elen, &offset);
 
                if (!fi)
                {
                        if (fibh->sbh != fibh->ebh)
-                               udf_release_data(fibh->ebh);
-                       udf_release_data(fibh->sbh);
-                       udf_release_data(bh);
+                               brelse(fibh->ebh);
+                       brelse(fibh->sbh);
+                       brelse(epos.bh);
                        *err = -EIO;
                        return NULL;
                }
@@ -461,7 +455,7 @@ udf_add_entry(struct inode *dir, struct dentry *dentry,
                {
                        if (((sizeof(struct fileIdentDesc) + liu + lfi + 3) & ~3) == nfidlen)
                        {
-                               udf_release_data(bh);
+                               brelse(epos.bh);
                                cfi->descTag.tagSerialNum = cpu_to_le16(1);
                                cfi->fileVersionNum = cpu_to_le16(1);
                                cfi->fileCharacteristics = 0;
@@ -480,12 +474,13 @@ udf_add_entry(struct inode *dir, struct dentry *dentry,
                if (!lfi || !dentry)
                        continue;
 
-               if (udf_match(namelen, name, lfi, nameptr))
+               if ((flen = udf_get_filename(dir->i_sb, nameptr, fname, lfi)) &&
+                       udf_match(flen, fname, dentry->d_name.len, dentry->d_name.name))
                {
                        if (fibh->sbh != fibh->ebh)
-                               udf_release_data(fibh->ebh);
-                       udf_release_data(fibh->sbh);
-                       udf_release_data(bh);
+                               brelse(fibh->ebh);
+                       brelse(fibh->sbh);
+                       brelse(epos.bh);
                        *err = -EEXIST;
                        return NULL;
                }
@@ -497,25 +492,25 @@ add:
        if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB &&
                sb->s_blocksize - fibh->eoffset < nfidlen)
        {
-               udf_release_data(bh);
-               bh = NULL;
+               brelse(epos.bh);
+               epos.bh = NULL;
                fibh->soffset -= udf_ext0_offset(dir);
                fibh->eoffset -= udf_ext0_offset(dir);
                f_pos -= (udf_ext0_offset(dir) >> 2);
                if (fibh->sbh != fibh->ebh)
-                       udf_release_data(fibh->ebh);
-               udf_release_data(fibh->sbh);
+                       brelse(fibh->ebh);
+               brelse(fibh->sbh);
                if (!(fibh->sbh = fibh->ebh = udf_expand_dir_adinicb(dir, &block, err)))
                        return NULL;
-               bloc = UDF_I_LOCATION(dir);
+               epos.block = UDF_I_LOCATION(dir);
                eloc.logicalBlockNum = block;
                eloc.partitionReferenceNum = UDF_I_LOCATION(dir).partitionReferenceNum;
                elen = dir->i_sb->s_blocksize;
-               extoffset = udf_file_entry_alloc_offset(dir);
+               epos.offset = udf_file_entry_alloc_offset(dir);
                if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_SHORT)
-                       extoffset += sizeof(short_ad);
+                       epos.offset += sizeof(short_ad);
                else if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_LONG)
-                       extoffset += sizeof(long_ad);
+                       epos.offset += sizeof(long_ad);
        }
 
        if (sb->s_blocksize - fibh->eoffset >= nfidlen)
@@ -524,7 +519,7 @@ add:
                fibh->eoffset += nfidlen;
                if (fibh->sbh != fibh->ebh)
                {
-                       udf_release_data(fibh->sbh);
+                       brelse(fibh->sbh);
                        fibh->sbh = fibh->ebh;
                }
 
@@ -546,7 +541,7 @@ add:
                fibh->eoffset += nfidlen - sb->s_blocksize;
                if (fibh->sbh != fibh->ebh)
                {
-                       udf_release_data(fibh->sbh);
+                       brelse(fibh->sbh);
                        fibh->sbh = fibh->ebh;
                }
 
@@ -555,14 +550,14 @@ add:
 
                if (!(fibh->ebh = udf_bread(dir, f_pos >> (dir->i_sb->s_blocksize_bits - 2), 1, err)))
                {
-                       udf_release_data(bh);
-                       udf_release_data(fibh->sbh);
+                       brelse(epos.bh);
+                       brelse(fibh->sbh);
                        return NULL;
                }
 
                if (!(fibh->soffset))
                {
-                       if (udf_next_aext(dir, &bloc, &extoffset, &eloc, &elen, &bh, 1) ==
+                       if (udf_next_aext(dir, &epos, &eloc, &elen, 1) ==
                                (EXT_RECORDED_ALLOCATED >> 30))
                        {
                                block = eloc.logicalBlockNum + ((elen - 1) >>
@@ -571,7 +566,7 @@ add:
                        else
                                block ++;
 
-                       udf_release_data(fibh->sbh);
+                       brelse(fibh->sbh);
                        fibh->sbh = fibh->ebh;
                        fi = (struct fileIdentDesc *)(fibh->sbh->b_data);
                }
@@ -592,7 +587,7 @@ add:
        cfi->lengthOfImpUse = cpu_to_le16(0);
        if (!udf_write_fi(dir, cfi, fi, fibh, NULL, name))
        {
-               udf_release_data(bh);
+               brelse(epos.bh);
                dir->i_size += nfidlen;
                if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB)
                        UDF_I_LENALLOC(dir) += nfidlen;
@@ -601,10 +596,10 @@ add:
        }
        else
        {
-               udf_release_data(bh);
+               brelse(epos.bh);
                if (fibh->sbh != fibh->ebh)
-                       udf_release_data(fibh->ebh);
-               udf_release_data(fibh->sbh);
+                       brelse(fibh->ebh);
+               brelse(fibh->sbh);
                *err = -EIO;
                return NULL;
        }
@@ -653,7 +648,7 @@ static int udf_create(struct inode *dir, struct dentry *dentry, int mode, struct
        }
        cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
        cfi.icb.extLocation = cpu_to_lelb(UDF_I_LOCATION(inode));
-       *(uint32_t *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
+       *(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
                cpu_to_le32(UDF_I_UNIQUE(inode) & 0x00000000FFFFFFFFUL);
        udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL);
        if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB)
@@ -661,8 +656,8 @@ static int udf_create(struct inode *dir, struct dentry *dentry, int mode, struct
                mark_inode_dirty(dir);
        }
        if (fibh.sbh != fibh.ebh)
-               udf_release_data(fibh.ebh);
-       udf_release_data(fibh.sbh);
+               brelse(fibh.ebh);
+       brelse(fibh.sbh);
        unlock_kernel();
        d_instantiate(dentry, inode);
        return 0;
@@ -696,7 +691,7 @@ static int udf_mknod(struct inode * dir, struct dentry * dentry, int mode, dev_t
        }
        cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
        cfi.icb.extLocation = cpu_to_lelb(UDF_I_LOCATION(inode));
-       *(uint32_t *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
+       *(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
                cpu_to_le32(UDF_I_UNIQUE(inode) & 0x00000000FFFFFFFFUL);
        udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL);
        if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB)
@@ -706,8 +701,8 @@ static int udf_mknod(struct inode * dir, struct dentry * dentry, int mode, dev_t
        mark_inode_dirty(inode);
 
        if (fibh.sbh != fibh.ebh)
-               udf_release_data(fibh.ebh);
-       udf_release_data(fibh.sbh);
+               brelse(fibh.ebh);
+       brelse(fibh.sbh);
        d_instantiate(dentry, inode);
        err = 0;
 out:
@@ -744,11 +739,11 @@ static int udf_mkdir(struct inode * dir, struct dentry * dentry, int mode)
        inode->i_nlink = 2;
        cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
        cfi.icb.extLocation = cpu_to_lelb(UDF_I_LOCATION(dir));
-       *(uint32_t *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
+       *(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
                cpu_to_le32(UDF_I_UNIQUE(dir) & 0x00000000FFFFFFFFUL);
        cfi.fileCharacteristics = FID_FILE_CHAR_DIRECTORY | FID_FILE_CHAR_PARENT;
        udf_write_fi(inode, &cfi, fi, &fibh, NULL, NULL);
-       udf_release_data(fibh.sbh);
+       brelse(fibh.sbh);
        inode->i_mode = S_IFDIR | mode;
        if (dir->i_mode & S_ISGID)
                inode->i_mode |= S_ISGID;
@@ -763,16 +758,16 @@ static int udf_mkdir(struct inode * dir, struct dentry * dentry, int mode)
        }
        cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
        cfi.icb.extLocation = cpu_to_lelb(UDF_I_LOCATION(inode));
-       *(uint32_t *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
+       *(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
                cpu_to_le32(UDF_I_UNIQUE(inode) & 0x00000000FFFFFFFFUL);
        cfi.fileCharacteristics |= FID_FILE_CHAR_DIRECTORY;
        udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL);
-       dir->i_nlink++;
+       inc_nlink(dir);
        mark_inode_dirty(dir);
        d_instantiate(dentry, inode);
        if (fibh.sbh != fibh.ebh)
-               udf_release_data(fibh.ebh);
-       udf_release_data(fibh.sbh);
+               brelse(fibh.ebh);
+       brelse(fibh.sbh);
        err = 0;
 out:
        unlock_kernel();
@@ -786,9 +781,10 @@ static int empty_dir(struct inode *dir)
        loff_t f_pos;
        loff_t size = (udf_ext0_offset(dir) + dir->i_size) >> 2;
        int block;
-       lb_addr bloc, eloc;
-       uint32_t extoffset, elen, offset;
-       struct buffer_head *bh = NULL;
+       kernel_lb_addr eloc;
+       uint32_t elen;
+       sector_t offset;
+       struct extent_position epos = { NULL, 0, { 0, 0}};
 
        f_pos = (udf_ext0_offset(dir) >> 2);
 
@@ -797,59 +793,58 @@ static int empty_dir(struct inode *dir)
        if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_IN_ICB)
                fibh.sbh = fibh.ebh = NULL;
        else if (inode_bmap(dir, f_pos >> (dir->i_sb->s_blocksize_bits - 2),
-               &bloc, &extoffset, &eloc, &elen, &offset, &bh) == (EXT_RECORDED_ALLOCATED >> 30))
+               &epos, &eloc, &elen, &offset) == (EXT_RECORDED_ALLOCATED >> 30))
        {
-               offset >>= dir->i_sb->s_blocksize_bits;
                block = udf_get_lb_pblock(dir->i_sb, eloc, offset);
                if ((++offset << dir->i_sb->s_blocksize_bits) < elen)
                {
                        if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_SHORT)
-                               extoffset -= sizeof(short_ad);
+                               epos.offset -= sizeof(short_ad);
                        else if (UDF_I_ALLOCTYPE(dir) == ICBTAG_FLAG_AD_LONG)
-                               extoffset -= sizeof(long_ad);
+                               epos.offset -= sizeof(long_ad);
                }
                else
                        offset = 0;
 
                if (!(fibh.sbh = fibh.ebh = udf_tread(dir->i_sb, block)))
                {
-                       udf_release_data(bh);
+                       brelse(epos.bh);
                        return 0;
                }
        }
        else
        {
-               udf_release_data(bh);
+               brelse(epos.bh);
                return 0;
        }
 
 
        while ( (f_pos < size) )
        {
-               fi = udf_fileident_read(dir, &f_pos, &fibh, &cfi, &bloc, &extoffset, &eloc, &elen, &offset, &bh);
+               fi = udf_fileident_read(dir, &f_pos, &fibh, &cfi, &epos, &eloc, &elen, &offset);
 
                if (!fi)
                {
                        if (fibh.sbh != fibh.ebh)
-                               udf_release_data(fibh.ebh);
-                       udf_release_data(fibh.sbh);
-                       udf_release_data(bh);
+                               brelse(fibh.ebh);
+                       brelse(fibh.sbh);
+                       brelse(epos.bh);
                        return 0;
                }
 
                if (cfi.lengthFileIdent && (cfi.fileCharacteristics & FID_FILE_CHAR_DELETED) == 0)
                {
                        if (fibh.sbh != fibh.ebh)
-                               udf_release_data(fibh.ebh);
-                       udf_release_data(fibh.sbh);
-                       udf_release_data(bh);
+                               brelse(fibh.ebh);
+                       brelse(fibh.sbh);
+                       brelse(epos.bh);
                        return 0;
                }
        }
        if (fibh.sbh != fibh.ebh)
-               udf_release_data(fibh.ebh);
-       udf_release_data(fibh.sbh);
-       udf_release_data(bh);
+               brelse(fibh.ebh);
+       brelse(fibh.sbh);
+       brelse(epos.bh);
        return 1;
 }
 
@@ -859,6 +854,7 @@ static int udf_rmdir(struct inode * dir, struct dentry * dentry)
        struct inode * inode = dentry->d_inode;
        struct udf_fileident_bh fibh;
        struct fileIdentDesc *fi, cfi;
+       kernel_lb_addr tloc;
 
        retval = -ENOENT;
        lock_kernel();
@@ -867,7 +863,8 @@ static int udf_rmdir(struct inode * dir, struct dentry * dentry)
                goto out;
 
        retval = -EIO;
-       if (udf_get_lb_pblock(dir->i_sb, lelb_to_cpu(cfi.icb.extLocation), 0) != inode->i_ino)
+       tloc = lelb_to_cpu(cfi.icb.extLocation);
+       if (udf_get_lb_pblock(dir->i_sb, tloc, 0) != inode->i_ino)
                goto end_rmdir;
        retval = -ENOTEMPTY;
        if (!empty_dir(inode))
@@ -879,17 +876,16 @@ static int udf_rmdir(struct inode * dir, struct dentry * dentry)
                udf_warning(inode->i_sb, "udf_rmdir",
                        "empty directory has nlink != 2 (%d)",
                        inode->i_nlink);
-       inode->i_nlink = 0;
+       clear_nlink(inode);
        inode->i_size = 0;
-       mark_inode_dirty(inode);
-       dir->i_nlink --;
-       inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME;
+       inode_dec_link_count(dir);
+       inode->i_ctime = dir->i_ctime = dir->i_mtime = current_fs_time(dir->i_sb);
        mark_inode_dirty(dir);
 
 end_rmdir:
        if (fibh.sbh != fibh.ebh)
-               udf_release_data(fibh.ebh);
-       udf_release_data(fibh.sbh);
+               brelse(fibh.ebh);
+       brelse(fibh.sbh);
 out:
        unlock_kernel();
        return retval;
@@ -902,6 +898,7 @@ static int udf_unlink(struct inode * dir, struct dentry * dentry)
        struct udf_fileident_bh fibh;
        struct fileIdentDesc *fi;
        struct fileIdentDesc cfi;
+       kernel_lb_addr tloc;
 
        retval = -ENOENT;
        lock_kernel();
@@ -910,12 +907,9 @@ static int udf_unlink(struct inode * dir, struct dentry * dentry)
                goto out;
 
        retval = -EIO;
-
-       if (udf_get_lb_pblock(dir->i_sb, lelb_to_cpu(cfi.icb.extLocation), 0) !=
-               inode->i_ino)
-       {
+       tloc = lelb_to_cpu(cfi.icb.extLocation);
+       if (udf_get_lb_pblock(dir->i_sb, tloc, 0) != inode->i_ino)
                goto end_unlink;
-       }
 
        if (!inode->i_nlink)
        {
@@ -926,17 +920,16 @@ static int udf_unlink(struct inode * dir, struct dentry * dentry)
        retval = udf_delete_entry(dir, fi, &fibh, &cfi);
        if (retval)
                goto end_unlink;
-       dir->i_ctime = dir->i_mtime = CURRENT_TIME;
+       dir->i_ctime = dir->i_mtime = current_fs_time(dir->i_sb);
        mark_inode_dirty(dir);
-       inode->i_nlink--;
-       mark_inode_dirty(inode);
+       inode_dec_link_count(inode);
        inode->i_ctime = dir->i_ctime;
        retval = 0;
 
 end_unlink:
        if (fibh.sbh != fibh.ebh)
-               udf_release_data(fibh.ebh);
-       udf_release_data(fibh.sbh);
+               brelse(fibh.ebh);
+       brelse(fibh.sbh);
 out:
        unlock_kernel();
        return retval;
@@ -948,7 +941,7 @@ static int udf_symlink(struct inode * dir, struct dentry * dentry, const char *
        struct pathComponent *pc;
        char *compstart;
        struct udf_fileident_bh fibh;
-       struct buffer_head *bh = NULL;
+       struct extent_position epos = { NULL,  0, {0, 0}};
        int eoffset, elen = 0;
        struct fileIdentDesc *fi;
        struct fileIdentDesc cfi;
@@ -968,33 +961,33 @@ static int udf_symlink(struct inode * dir, struct dentry * dentry, const char *
 
        if (UDF_I_ALLOCTYPE(inode) != ICBTAG_FLAG_AD_IN_ICB)
        {
-               struct buffer_head *bh = NULL;
-               lb_addr bloc, eloc;
-               uint32_t elen, extoffset;
+               kernel_lb_addr eloc;
+               uint32_t elen;
 
                block = udf_new_block(inode->i_sb, inode,
                        UDF_I_LOCATION(inode).partitionReferenceNum,
                        UDF_I_LOCATION(inode).logicalBlockNum, &err);
                if (!block)
                        goto out_no_entry;
-               bloc = UDF_I_LOCATION(inode);
+               epos.block = UDF_I_LOCATION(inode);
+               epos.offset = udf_file_entry_alloc_offset(inode);
+               epos.bh = NULL;
                eloc.logicalBlockNum = block;
                eloc.partitionReferenceNum = UDF_I_LOCATION(inode).partitionReferenceNum;
                elen = inode->i_sb->s_blocksize;
                UDF_I_LENEXTENTS(inode) = elen;
-               extoffset = udf_file_entry_alloc_offset(inode);
-               udf_add_aext(inode, &bloc, &extoffset, eloc, elen, &bh, 0);
-               udf_release_data(bh);
+               udf_add_aext(inode, &epos, eloc, elen, 0);
+               brelse(epos.bh);
 
                block = udf_get_pblock(inode->i_sb, block,
                        UDF_I_LOCATION(inode).partitionReferenceNum, 0);
-               bh = udf_tread(inode->i_sb, block);
-               lock_buffer(bh);
-               memset(bh->b_data, 0x00, inode->i_sb->s_blocksize);
-               set_buffer_uptodate(bh);
-               unlock_buffer(bh);
-               mark_buffer_dirty_inode(bh, inode);
-               ea = bh->b_data + udf_ext0_offset(inode);
+               epos.bh = udf_tread(inode->i_sb, block);
+               lock_buffer(epos.bh);
+               memset(epos.bh->b_data, 0x00, inode->i_sb->s_blocksize);
+               set_buffer_uptodate(epos.bh);
+               unlock_buffer(epos.bh);
+               mark_buffer_dirty_inode(epos.bh, inode);
+               ea = epos.bh->b_data + udf_ext0_offset(inode);
        }
        else
                ea = UDF_I_DATA(inode) + UDF_I_LENEATTR(inode);
@@ -1067,7 +1060,7 @@ static int udf_symlink(struct inode * dir, struct dentry * dentry, const char *
                }
        }
 
-       udf_release_data(bh);
+       brelse(epos.bh);
        inode->i_size = elen;
        if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_IN_ICB)
                UDF_I_LENALLOC(inode) = inode->i_size;
@@ -1083,7 +1076,7 @@ static int udf_symlink(struct inode * dir, struct dentry * dentry, const char *
                uint64_t uniqueID;
                lvhd = (struct logicalVolHeaderDesc *)(UDF_SB_LVID(inode->i_sb)->logicalVolContentsUse);
                uniqueID = le64_to_cpu(lvhd->uniqueID);
-               *(uint32_t *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
+               *(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
                        cpu_to_le32(uniqueID & 0x00000000FFFFFFFFUL);
                if (!(++uniqueID & 0x00000000FFFFFFFFUL))
                        uniqueID += 16;
@@ -1096,8 +1089,8 @@ static int udf_symlink(struct inode * dir, struct dentry * dentry, const char *
                mark_inode_dirty(dir);
        }
        if (fibh.sbh != fibh.ebh)
-               udf_release_data(fibh.ebh);
-       udf_release_data(fibh.sbh);
+               brelse(fibh.ebh);
+       brelse(fibh.sbh);
        d_instantiate(dentry, inode);
        err = 0;
 
@@ -1106,8 +1099,7 @@ out:
        return err;
 
 out_no_entry:
-       inode->i_nlink--;
-       mark_inode_dirty(inode);
+       inode_dec_link_count(inode);
        iput(inode);
        goto out;
 }
@@ -1140,7 +1132,7 @@ static int udf_link(struct dentry * old_dentry, struct inode * dir,
                uint64_t uniqueID;
                lvhd = (struct logicalVolHeaderDesc *)(UDF_SB_LVID(inode->i_sb)->logicalVolContentsUse);
                uniqueID = le64_to_cpu(lvhd->uniqueID);
-               *(uint32_t *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
+               *(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
                        cpu_to_le32(uniqueID & 0x00000000FFFFFFFFUL);
                if (!(++uniqueID & 0x00000000FFFFFFFFUL))
                        uniqueID += 16;
@@ -1153,10 +1145,10 @@ static int udf_link(struct dentry * old_dentry, struct inode * dir,
                mark_inode_dirty(dir);
        }
        if (fibh.sbh != fibh.ebh)
-               udf_release_data(fibh.ebh);
-       udf_release_data(fibh.sbh);
-       inode->i_nlink ++;
-       inode->i_ctime = CURRENT_TIME;
+               brelse(fibh.ebh);
+       brelse(fibh.sbh);
+       inc_nlink(inode);
+       inode->i_ctime = current_fs_time(inode->i_sb);
        mark_inode_dirty(inode);
        atomic_inc(&inode->i_count);
        d_instantiate(dentry, inode);
@@ -1176,19 +1168,19 @@ static int udf_rename (struct inode * old_dir, struct dentry * old_dentry,
        struct fileIdentDesc *ofi = NULL, *nfi = NULL, *dir_fi = NULL, ocfi, ncfi;
        struct buffer_head *dir_bh = NULL;
        int retval = -ENOENT;
+       kernel_lb_addr tloc;
 
        lock_kernel();
        if ((ofi = udf_find_entry(old_dir, old_dentry, &ofibh, &ocfi)))
        {
                if (ofibh.sbh != ofibh.ebh)
-                       udf_release_data(ofibh.ebh);
-               udf_release_data(ofibh.sbh);
+                       brelse(ofibh.ebh);
+               brelse(ofibh.sbh);
        }
-       if (!ofi || udf_get_lb_pblock(old_dir->i_sb, lelb_to_cpu(ocfi.icb.extLocation), 0) !=
-               old_inode->i_ino)
-       {
+       tloc = lelb_to_cpu(ocfi.icb.extLocation);
+       if (!ofi || udf_get_lb_pblock(old_dir->i_sb, tloc, 0)
+                                       != old_inode->i_ino)
                goto end_rename;
-       }
 
        nfi = udf_find_entry(new_dir, new_dentry, &nfibh, &ncfi);
        if (nfi)
@@ -1196,8 +1188,8 @@ static int udf_rename (struct inode * old_dir, struct dentry * old_dentry,
                if (!new_inode)
                {
                        if (nfibh.sbh != nfibh.ebh)
-                               udf_release_data(nfibh.ebh);
-                       udf_release_data(nfibh.sbh);
+                               brelse(nfibh.ebh);
+                       brelse(nfibh.sbh);
                        nfi = NULL;
                }
        }
@@ -1229,11 +1221,11 @@ static int udf_rename (struct inode * old_dir, struct dentry * old_dentry,
                }
                if (!dir_fi)
                        goto end_rename;
-               if (udf_get_lb_pblock(old_inode->i_sb, cpu_to_lelb(dir_fi->icb.extLocation), 0) !=
-                       old_dir->i_ino)
-               {
+               tloc = lelb_to_cpu(dir_fi->icb.extLocation);
+               if (udf_get_lb_pblock(old_inode->i_sb, tloc, 0)
+                                       != old_dir->i_ino)
                        goto end_rename;
-               }
+
                retval = -EMLINK;
                if (!new_inode && new_dir->i_nlink >= (256<<sizeof(new_dir->i_nlink))-1)
                        goto end_rename;
@@ -1249,7 +1241,7 @@ static int udf_rename (struct inode * old_dir, struct dentry * old_dentry,
         * Like most other Unix systems, set the ctime for inodes on a
         * rename.
         */
-       old_inode->i_ctime = CURRENT_TIME;
+       old_inode->i_ctime = current_fs_time(old_inode->i_sb);
        mark_inode_dirty(old_inode);
 
        /*
@@ -1266,34 +1258,31 @@ static int udf_rename (struct inode * old_dir, struct dentry * old_dentry,
 
        if (new_inode)
        {
-               new_inode->i_nlink--;
-               new_inode->i_ctime = CURRENT_TIME;
-               mark_inode_dirty(new_inode);
+               new_inode->i_ctime = current_fs_time(new_inode->i_sb);
+               inode_dec_link_count(new_inode);
        }
-       old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME;
+       old_dir->i_ctime = old_dir->i_mtime = current_fs_time(old_dir->i_sb);
        mark_inode_dirty(old_dir);
 
        if (dir_fi)
        {
-               dir_fi->icb.extLocation = lelb_to_cpu(UDF_I_LOCATION(new_dir));
+               dir_fi->icb.extLocation = cpu_to_lelb(UDF_I_LOCATION(new_dir));
                udf_update_tag((char *)dir_fi, (sizeof(struct fileIdentDesc) +
-                       cpu_to_le16(dir_fi->lengthOfImpUse) + 3) & ~3);
+                       le16_to_cpu(dir_fi->lengthOfImpUse) + 3) & ~3);
                if (UDF_I_ALLOCTYPE(old_inode) == ICBTAG_FLAG_AD_IN_ICB)
                {
                        mark_inode_dirty(old_inode);
                }
                else
                        mark_buffer_dirty_inode(dir_bh, old_inode);
-               old_dir->i_nlink --;
-               mark_inode_dirty(old_dir);
+               inode_dec_link_count(old_dir);
                if (new_inode)
                {
-                       new_inode->i_nlink --;
-                       mark_inode_dirty(new_inode);
+                       inode_dec_link_count(new_inode);
                }
                else
                {
-                       new_dir->i_nlink ++;
+                       inc_nlink(new_dir);
                        mark_inode_dirty(new_dir);
                }
        }
@@ -1301,19 +1290,19 @@ static int udf_rename (struct inode * old_dir, struct dentry * old_dentry,
        if (ofi)
        {
                if (ofibh.sbh != ofibh.ebh)
-                       udf_release_data(ofibh.ebh);
-               udf_release_data(ofibh.sbh);
+                       brelse(ofibh.ebh);
+               brelse(ofibh.sbh);
        }
 
        retval = 0;
 
 end_rename:
-       udf_release_data(dir_bh);
+       brelse(dir_bh);
        if (nfi)
        {
                if (nfibh.sbh != nfibh.ebh)
-                       udf_release_data(nfibh.ebh);
-               udf_release_data(nfibh.sbh);
+                       brelse(nfibh.ebh);
+               brelse(nfibh.sbh);
        }
        unlock_kernel();
        return retval;