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Date: Tue, 5 Feb 2008 17:22:19 +0100
From: Jan Kara <jack@...e.cz>
To: Marcin Slusarz <marcin.slusarz@...il.com>
Cc: LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 6/6] udf: super.c reorganization
On Sun 03-02-08 19:42:38, Marcin Slusarz wrote:
> reorganize few code blocks in super.c which
> were needlessly indented (and hard to read):
>
> so change from:
> rettype fun()
> {
> init;
> if (sth) {
> long block of code;
> }
> }
>
> to:
> rettype fun()
> {
> init;
> if (!sth)
> return;
> long block of code;
> }
>
> or
>
> from:
> rettype fun2()
> {
> init;
> while (sth) {
> init2();
> if (sth2) {
> long block of code;
> }
> }
> }
>
> to:
> rettype fun2()
> {
> init;
> while (sth) {
> init2();
> if (!sth2)
> continue;
> long block of code;
> }
> }
I think change in udf_load_partdesc() should be done differently (see
comment below) but otherwise the patch is fine.
>
> Signed-off-by: Marcin Slusarz <marcin.slusarz@...il.com>
> Cc: Jan Kara <jack@...e.cz>
> ---
> fs/udf/super.c | 519 ++++++++++++++++++++++++++++----------------------------
> 1 files changed, 259 insertions(+), 260 deletions(-)
>
> diff --git a/fs/udf/super.c b/fs/udf/super.c
> index 3a7faad..b622d4c 100644
> --- a/fs/udf/super.c
> +++ b/fs/udf/super.c
> @@ -798,18 +798,18 @@ static void udf_find_anchor(struct super_block *sb)
> }
>
> for (i = 0; i < ARRAY_SIZE(sbi->s_anchor); i++) {
> - if (sbi->s_anchor[i]) {
> - bh = udf_read_tagged(sb, sbi->s_anchor[i],
> - sbi->s_anchor[i], &ident);
> - if (!bh)
> + if (!sbi->s_anchor[i])
> + continue;
> + bh = udf_read_tagged(sb, sbi->s_anchor[i],
> + sbi->s_anchor[i], &ident);
> + if (!bh)
> + sbi->s_anchor[i] = 0;
> + else {
> + brelse(bh);
> + if ((ident != TAG_IDENT_AVDP) &&
> + (i || (ident != TAG_IDENT_FE &&
> + ident != TAG_IDENT_EFE)))
> sbi->s_anchor[i] = 0;
> - else {
> - brelse(bh);
> - if ((ident != TAG_IDENT_AVDP) &&
> - (i || (ident != TAG_IDENT_FE &&
> - ident != TAG_IDENT_EFE)))
> - sbi->s_anchor[i] = 0;
> - }
> }
> }
>
> @@ -1001,108 +1001,108 @@ static int udf_load_partdesc(struct super_block *sb, struct buffer_head *bh)
> sbi = UDF_SB(sb);
>
Actually, the loop below would be even more readable it you did:
if (map->s_partition_num == le16_to_cpu(p->partitionNumber))
break;
And do the work after we exit from the loop.
> for (i = 0; i < sbi->s_partitions; i++) {
> + struct partitionHeaderDesc *phd;
> +
> map = &sbi->s_partmaps[i];
> udf_debug("Searching map: (%d == %d)\n",
> map->s_partition_num,
> le16_to_cpu(p->partitionNumber));
> - if (map->s_partition_num ==
> - le16_to_cpu(p->partitionNumber)) {
> - map->s_partition_len =
> - le32_to_cpu(p->partitionLength); /* blocks */
> - map->s_partition_root =
> - le32_to_cpu(p->partitionStartingLocation);
> - if (p->accessType ==
> - cpu_to_le32(PD_ACCESS_TYPE_READ_ONLY))
> - map->s_partition_flags |=
> - UDF_PART_FLAG_READ_ONLY;
> - if (p->accessType ==
> - cpu_to_le32(PD_ACCESS_TYPE_WRITE_ONCE))
> - map->s_partition_flags |=
> - UDF_PART_FLAG_WRITE_ONCE;
> - if (p->accessType ==
> - cpu_to_le32(PD_ACCESS_TYPE_REWRITABLE))
> + if (map->s_partition_num !=
> + le16_to_cpu(p->partitionNumber))
> + continue;
> +
> + map->s_partition_len =
> + le32_to_cpu(p->partitionLength); /* blocks */
> + map->s_partition_root =
> + le32_to_cpu(p->partitionStartingLocation);
> + if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_READ_ONLY))
> + map->s_partition_flags |= UDF_PART_FLAG_READ_ONLY;
> + if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_WRITE_ONCE))
> + map->s_partition_flags |= UDF_PART_FLAG_WRITE_ONCE;
> + if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_REWRITABLE))
> + map->s_partition_flags |= UDF_PART_FLAG_REWRITABLE;
> + if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_OVERWRITABLE))
> + map->s_partition_flags |= UDF_PART_FLAG_OVERWRITABLE;
> +
> + if (strcmp(p->partitionContents.ident,
> + PD_PARTITION_CONTENTS_NSR02) &&
> + strcmp(p->partitionContents.ident,
> + PD_PARTITION_CONTENTS_NSR03))
> + break;
> +
> + phd = (struct partitionHeaderDesc *)
> + (p->partitionContentsUse);
> + if (phd->unallocSpaceTable.extLength) {
> + kernel_lb_addr loc = {
> + .logicalBlockNum = le32_to_cpu(
> + phd->unallocSpaceTable.extPosition),
> + .partitionReferenceNum = i,
> + };
> +
> + map->s_uspace.s_table =
> + udf_iget(sb, loc);
> + if (!map->s_uspace.s_table) {
> + udf_debug("cannot load unallocSpaceTable "
> + "(part %d)\n", i);
> + return 1;
> + }
> + map->s_partition_flags |=
> + UDF_PART_FLAG_UNALLOC_TABLE;
> + udf_debug("unallocSpaceTable (part %d) @ %ld\n",
> + i, map->s_uspace.s_table->i_ino);
> + }
> + if (phd->unallocSpaceBitmap.extLength) {
> + struct udf_bitmap *bitmap =
> + udf_sb_alloc_bitmap(sb, i);
> + map->s_uspace.s_bitmap = bitmap;
> + if (bitmap != NULL) {
> + bitmap->s_extLength = le32_to_cpu(
> + phd->unallocSpaceBitmap.extLength);
> + bitmap->s_extPosition = le32_to_cpu(
> + phd->unallocSpaceBitmap.extPosition);
> map->s_partition_flags |=
> - UDF_PART_FLAG_REWRITABLE;
> - if (p->accessType ==
> - cpu_to_le32(PD_ACCESS_TYPE_OVERWRITABLE))
> + UDF_PART_FLAG_UNALLOC_BITMAP;
> + udf_debug("unallocSpaceBitmap (part %d) @ %d\n",
> + i, bitmap->s_extPosition);
> + }
> + }
> + if (phd->partitionIntegrityTable.extLength)
> + udf_debug("partitionIntegrityTable (part %d)\n", i);
> + if (phd->freedSpaceTable.extLength) {
> + kernel_lb_addr loc = {
> + .logicalBlockNum = le32_to_cpu(
> + phd->freedSpaceTable.extPosition),
> + .partitionReferenceNum = i,
> + };
> +
> + map->s_fspace.s_table =
> + udf_iget(sb, loc);
> + if (!map->s_fspace.s_table) {
> + udf_debug("cannot load freedSpaceTable "
> + "(part %d)\n", i);
> + return 1;
> + }
> + map->s_partition_flags |=
> + UDF_PART_FLAG_FREED_TABLE;
> + udf_debug("freedSpaceTable (part %d) @ %ld\n",
> + i, map->s_fspace.s_table->i_ino);
> + }
> + if (phd->freedSpaceBitmap.extLength) {
> + struct udf_bitmap *bitmap =
> + udf_sb_alloc_bitmap(sb, i);
> + map->s_fspace.s_bitmap = bitmap;
> + if (bitmap != NULL) {
> + bitmap->s_extLength = le32_to_cpu(
> + phd->freedSpaceBitmap.extLength);
> + bitmap->s_extPosition = le32_to_cpu(
> + phd->freedSpaceBitmap.extPosition);
> map->s_partition_flags |=
> - UDF_PART_FLAG_OVERWRITABLE;
> -
> - if (!strcmp(p->partitionContents.ident,
> - PD_PARTITION_CONTENTS_NSR02) ||
> - !strcmp(p->partitionContents.ident,
> - PD_PARTITION_CONTENTS_NSR03)) {
> - struct partitionHeaderDesc *phd;
> -
> - phd = (struct partitionHeaderDesc *)
> - (p->partitionContentsUse);
> - if (phd->unallocSpaceTable.extLength) {
> - kernel_lb_addr loc = {
> - .logicalBlockNum = le32_to_cpu(phd->unallocSpaceTable.extPosition),
> - .partitionReferenceNum = i,
> - };
> -
> - map->s_uspace.s_table =
> - udf_iget(sb, loc);
> - if (!map->s_uspace.s_table) {
> - udf_debug("cannot load unallocSpaceTable (part %d)\n", i);
> - return 1;
> - }
> - map->s_partition_flags |=
> - UDF_PART_FLAG_UNALLOC_TABLE;
> - udf_debug("unallocSpaceTable (part %d) @ %ld\n",
> - i, map->s_uspace.s_table->i_ino);
> - }
> - if (phd->unallocSpaceBitmap.extLength) {
> - struct udf_bitmap *bitmap =
> - udf_sb_alloc_bitmap(sb, i);
> - map->s_uspace.s_bitmap = bitmap;
> - if (bitmap != NULL) {
> - bitmap->s_extLength =
> - le32_to_cpu(phd->unallocSpaceBitmap.extLength);
> - bitmap->s_extPosition =
> - le32_to_cpu(phd->unallocSpaceBitmap.extPosition);
> - map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_BITMAP;
> - udf_debug("unallocSpaceBitmap (part %d) @ %d\n",
> - i, bitmap->s_extPosition);
> - }
> - }
> - if (phd->partitionIntegrityTable.extLength)
> - udf_debug("partitionIntegrityTable (part %d)\n", i);
> - if (phd->freedSpaceTable.extLength) {
> - kernel_lb_addr loc = {
> - .logicalBlockNum = le32_to_cpu(phd->freedSpaceTable.extPosition),
> - .partitionReferenceNum = i,
> - };
> -
> - map->s_fspace.s_table =
> - udf_iget(sb, loc);
> - if (!map->s_fspace.s_table) {
> - udf_debug("cannot load freedSpaceTable (part %d)\n", i);
> - return 1;
> - }
> - map->s_partition_flags |=
> - UDF_PART_FLAG_FREED_TABLE;
> - udf_debug("freedSpaceTable (part %d) @ %ld\n",
> - i, map->s_fspace.s_table->i_ino);
> - }
> - if (phd->freedSpaceBitmap.extLength) {
> - struct udf_bitmap *bitmap =
> - udf_sb_alloc_bitmap(sb, i);
> - map->s_fspace.s_bitmap = bitmap;
> - if (bitmap != NULL) {
> - bitmap->s_extLength =
> - le32_to_cpu(phd->freedSpaceBitmap.extLength);
> - bitmap->s_extPosition =
> - le32_to_cpu(phd->freedSpaceBitmap.extPosition);
> - map->s_partition_flags |= UDF_PART_FLAG_FREED_BITMAP;
> - udf_debug("freedSpaceBitmap (part %d) @ %d\n",
> - i, bitmap->s_extPosition);
> - }
> - }
> + UDF_PART_FLAG_FREED_BITMAP;
> + udf_debug("freedSpaceBitmap (part %d) @ %d\n",
> + i, bitmap->s_extPosition);
> }
> - break;
> }
> + break;
> }
> if (i == sbi->s_partitions)
> udf_debug("Partition (%d) not found in partition map\n",
> @@ -1187,19 +1187,17 @@ static int udf_load_logicalvol(struct super_block *sb, struct buffer_head *bh,
> map->s_type_specific.s_sparing.
> s_spar_map[j] = bh2;
>
> - if (bh2 != NULL) {
> - st = (struct sparingTable *)
> - bh2->b_data;
> - if (ident != 0 || strncmp(
> - st->sparingIdent.ident,
> - UDF_ID_SPARING,
> - strlen(UDF_ID_SPARING))) {
> - brelse(bh2);
> - map->s_type_specific.
> - s_sparing.
> - s_spar_map[j] =
> - NULL;
> - }
> + if (bh2 == NULL)
> + continue;
> +
> + st = (struct sparingTable *)bh2->b_data;
> + if (ident != 0 || strncmp(
> + st->sparingIdent.ident,
> + UDF_ID_SPARING,
> + strlen(UDF_ID_SPARING))) {
> + brelse(bh2);
> + map->s_type_specific.s_sparing.
> + s_spar_map[j] = NULL;
> }
> }
> map->s_partition_func = udf_get_pblock_spar15;
> @@ -1364,40 +1362,40 @@ static int udf_process_sequence(struct super_block *sb, long block,
> brelse(bh);
> }
> for (i = 0; i < VDS_POS_LENGTH; i++) {
> - if (vds[i].block) {
> - bh = udf_read_tagged(sb, vds[i].block, vds[i].block,
> - &ident);
> -
> - if (i == VDS_POS_PRIMARY_VOL_DESC) {
> - udf_load_pvoldesc(sb, bh);
> - } else if (i == VDS_POS_LOGICAL_VOL_DESC) {
> - if (udf_load_logicalvol(sb, bh, fileset)) {
> - brelse(bh);
> - return 1;
> - }
> - } else if (i == VDS_POS_PARTITION_DESC) {
> - struct buffer_head *bh2 = NULL;
> - if (udf_load_partdesc(sb, bh)) {
> - brelse(bh);
> - return 1;
> - }
> - for (j = vds[i].block + 1;
> - j < vds[VDS_POS_TERMINATING_DESC].block;
> - j++) {
> - bh2 = udf_read_tagged(sb, j, j, &ident);
> - gd = (struct generic_desc *)bh2->b_data;
> - if (ident == TAG_IDENT_PD)
> - if (udf_load_partdesc(sb,
> - bh2)) {
> - brelse(bh);
> - brelse(bh2);
> - return 1;
> - }
> - brelse(bh2);
> - }
> + if (!vds[i].block)
> + continue;
> +
> + bh = udf_read_tagged(sb, vds[i].block, vds[i].block,
> + &ident);
> +
> + if (i == VDS_POS_PRIMARY_VOL_DESC)
> + udf_load_pvoldesc(sb, bh);
> + else if (i == VDS_POS_LOGICAL_VOL_DESC) {
> + if (udf_load_logicalvol(sb, bh, fileset)) {
> + brelse(bh);
> + return 1;
> + }
> + } else if (i == VDS_POS_PARTITION_DESC) {
> + struct buffer_head *bh2 = NULL;
> + if (udf_load_partdesc(sb, bh)) {
> + brelse(bh);
> + return 1;
> + }
> + for (j = vds[i].block + 1;
> + j < vds[VDS_POS_TERMINATING_DESC].block;
> + j++) {
> + bh2 = udf_read_tagged(sb, j, j, &ident);
> + gd = (struct generic_desc *)bh2->b_data;
> + if (ident == TAG_IDENT_PD)
> + if (udf_load_partdesc(sb, bh2)) {
> + brelse(bh);
> + brelse(bh2);
> + return 1;
> + }
> + brelse(bh2);
> }
> - brelse(bh);
> }
> + brelse(bh);
> }
>
> return 0;
> @@ -1409,6 +1407,7 @@ static int udf_process_sequence(struct super_block *sb, long block,
> static int udf_check_valid(struct super_block *sb, int novrs, int silent)
> {
> long block;
> + struct udf_sb_info *sbi;
>
> if (novrs) {
> udf_debug("Validity check skipped because of novrs option\n");
> @@ -1416,18 +1415,16 @@ static int udf_check_valid(struct super_block *sb, int novrs, int silent)
> }
> /* Check that it is NSR02 compliant */
> /* Process any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */
> - else {
> - block = udf_vrs(sb, silent);
> - if (block == -1) {
> - struct udf_sb_info *sbi = UDF_SB(sb);
> - udf_debug("Failed to read byte 32768. Assuming open "
> - "disc. Skipping validity check\n");
> - if (!sbi->s_last_block)
> - sbi->s_last_block = udf_get_last_block(sb);
> - return 0;
> - } else
> - return !block;
> - }
> + block = udf_vrs(sb, silent);
> + if (block != -1)
> + return !block;
> +
> + sbi = UDF_SB(sb);
> + udf_debug("Failed to read byte 32768. Assuming open "
> + "disc. Skipping validity check\n");
> + if (!sbi->s_last_block)
> + sbi->s_last_block = udf_get_last_block(sb);
> + return 0;
> }
>
> static int udf_load_partition(struct super_block *sb, kernel_lb_addr *fileset)
> @@ -1446,6 +1443,7 @@ static int udf_load_partition(struct super_block *sb, kernel_lb_addr *fileset)
> for (i = 0; i < ARRAY_SIZE(sbi->s_anchor); i++) {
> if (!sbi->s_anchor[i])
> continue;
> +
> bh = udf_read_tagged(sb, sbi->s_anchor[i], sbi->s_anchor[i],
> &ident);
> if (!bh)
> @@ -1487,72 +1485,73 @@ static int udf_load_partition(struct super_block *sb, kernel_lb_addr *fileset)
> for (i = 0; i < sbi->s_partitions; i++) {
> kernel_lb_addr uninitialized_var(ino);
> struct udf_part_map *map = &sbi->s_partmaps[i];
> - switch (map->s_partition_type) {
> - case UDF_VIRTUAL_MAP15:
> - case UDF_VIRTUAL_MAP20:
> - if (!sbi->s_last_block) {
> - sbi->s_last_block = udf_get_last_block(sb);
> - udf_find_anchor(sb);
> - }
>
> - if (!sbi->s_last_block) {
> - udf_debug("Unable to determine Lastblock (For "
> - "Virtual Partition)\n");
> - return 1;
> - }
> + if (map->s_partition_type != UDF_VIRTUAL_MAP15 &&
> + map->s_partition_type != UDF_VIRTUAL_MAP20)
> + continue;
>
> - for (j = 0; j < sbi->s_partitions; j++) {
> - struct udf_part_map *map2 = &sbi->s_partmaps[j];
> - if (j != i &&
> - map->s_volumeseqnum ==
> - map2->s_volumeseqnum &&
> - map->s_partition_num ==
> - map2->s_partition_num) {
> - ino.partitionReferenceNum = j;
> - ino.logicalBlockNum =
> - sbi->s_last_block -
> - map2->s_partition_root;
> - break;
> - }
> + if (!sbi->s_last_block) {
> + sbi->s_last_block = udf_get_last_block(sb);
> + udf_find_anchor(sb);
> + }
> +
> + if (!sbi->s_last_block) {
> + udf_debug("Unable to determine Lastblock (For "
> + "Virtual Partition)\n");
> + return 1;
> + }
> +
> + for (j = 0; j < sbi->s_partitions; j++) {
> + struct udf_part_map *map2 = &sbi->s_partmaps[j];
> + if (j != i &&
> + map->s_volumeseqnum ==
> + map2->s_volumeseqnum &&
> + map->s_partition_num ==
> + map2->s_partition_num) {
> + ino.partitionReferenceNum = j;
> + ino.logicalBlockNum =
> + sbi->s_last_block -
> + map2->s_partition_root;
> + break;
> }
> + }
>
> - if (j == sbi->s_partitions)
> - return 1;
> + if (j == sbi->s_partitions)
> + return 1;
>
> - sbi->s_vat_inode = udf_iget(sb, ino);
> - if (!sbi->s_vat_inode)
> - return 1;
> + sbi->s_vat_inode = udf_iget(sb, ino);
> + if (!sbi->s_vat_inode)
> + return 1;
>
> - if (map->s_partition_type == UDF_VIRTUAL_MAP15) {
> - map->s_type_specific.s_virtual.s_start_offset =
> - udf_ext0_offset(sbi->s_vat_inode);
> - map->s_type_specific.s_virtual.s_num_entries =
> - (sbi->s_vat_inode->i_size - 36) >> 2;
> - } else if (map->s_partition_type == UDF_VIRTUAL_MAP20) {
> - uint32_t pos;
> - struct virtualAllocationTable20 *vat20;
> -
> - pos = udf_block_map(sbi->s_vat_inode, 0);
> - bh = sb_bread(sb, pos);
> - if (!bh)
> - return 1;
> - vat20 = (struct virtualAllocationTable20 *)
> - bh->b_data +
> - udf_ext0_offset(sbi->s_vat_inode);
> - map->s_type_specific.s_virtual.s_start_offset =
> - le16_to_cpu(vat20->lengthHeader) +
> - udf_ext0_offset(sbi->s_vat_inode);
> - map->s_type_specific.s_virtual.s_num_entries =
> - (sbi->s_vat_inode->i_size -
> - map->s_type_specific.s_virtual.
> - s_start_offset) >> 2;
> - brelse(bh);
> - }
> - map->s_partition_root = udf_get_pblock(sb, 0, i, 0);
> - map->s_partition_len =
> - sbi->s_partmaps[ino.partitionReferenceNum].
> - s_partition_len;
> + if (map->s_partition_type == UDF_VIRTUAL_MAP15) {
> + map->s_type_specific.s_virtual.s_start_offset =
> + udf_ext0_offset(sbi->s_vat_inode);
> + map->s_type_specific.s_virtual.s_num_entries =
> + (sbi->s_vat_inode->i_size - 36) >> 2;
> + } else if (map->s_partition_type == UDF_VIRTUAL_MAP20) {
> + uint32_t pos;
> + struct virtualAllocationTable20 *vat20;
> +
> + pos = udf_block_map(sbi->s_vat_inode, 0);
> + bh = sb_bread(sb, pos);
> + if (!bh)
> + return 1;
> + vat20 = (struct virtualAllocationTable20 *)
> + bh->b_data +
> + udf_ext0_offset(sbi->s_vat_inode);
> + map->s_type_specific.s_virtual.s_start_offset =
> + le16_to_cpu(vat20->lengthHeader) +
> + udf_ext0_offset(sbi->s_vat_inode);
> + map->s_type_specific.s_virtual.s_num_entries =
> + (sbi->s_vat_inode->i_size -
> + map->s_type_specific.s_virtual.
> + s_start_offset) >> 2;
> + brelse(bh);
> }
> + map->s_partition_root = udf_get_pblock(sb, 0, i, 0);
> + map->s_partition_len =
> + sbi->s_partmaps[ino.partitionReferenceNum].
> + s_partition_len;
> }
> return 0;
> }
> @@ -1561,25 +1560,25 @@ static void udf_open_lvid(struct super_block *sb)
> {
> struct udf_sb_info *sbi = UDF_SB(sb);
> struct buffer_head *bh = sbi->s_lvid_bh;
> - if (bh) {
> - struct logicalVolIntegrityDesc *lvid =
> - (struct logicalVolIntegrityDesc *)bh->b_data;
> - struct logicalVolIntegrityDescImpUse *lvidiu =
> - udf_sb_lvidiu(sbi);
> + struct logicalVolIntegrityDesc *lvid;
> + struct logicalVolIntegrityDescImpUse *lvidiu;
> + if (!bh)
> + return;
>
> - lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
> - lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
> - udf_time_to_stamp(&lvid->recordingDateAndTime, CURRENT_TIME);
> - lvid->integrityType = LVID_INTEGRITY_TYPE_OPEN;
> + lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
> + lvidiu = udf_sb_lvidiu(sbi);
>
> - lvid->descTag.descCRC = cpu_to_le16(
> - udf_crc((char *)lvid + sizeof(tag),
> - le16_to_cpu(lvid->descTag.descCRCLength),
> - 0));
> + lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
> + lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
> + udf_time_to_stamp(&lvid->recordingDateAndTime, CURRENT_TIME);
> + lvid->integrityType = LVID_INTEGRITY_TYPE_OPEN;
>
> - lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
> - mark_buffer_dirty(bh);
> - }
> + lvid->descTag.descCRC = cpu_to_le16(
> + udf_crc((char *)lvid + sizeof(tag),
> + le16_to_cpu(lvid->descTag.descCRCLength), 0));
> +
> + lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
> + mark_buffer_dirty(bh);
> }
>
> static void udf_close_lvid(struct super_block *sb)
> @@ -1587,35 +1586,35 @@ static void udf_close_lvid(struct super_block *sb)
> struct udf_sb_info *sbi = UDF_SB(sb);
> struct buffer_head *bh = sbi->s_lvid_bh;
> struct logicalVolIntegrityDesc *lvid;
> + struct logicalVolIntegrityDescImpUse *lvidiu;
>
> if (!bh)
> return;
>
> lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
>
> - if (lvid->integrityType == LVID_INTEGRITY_TYPE_OPEN) {
> - struct logicalVolIntegrityDescImpUse *lvidiu =
> - udf_sb_lvidiu(sbi);
> - lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
> - lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
> - udf_time_to_stamp(&lvid->recordingDateAndTime, CURRENT_TIME);
> - if (UDF_MAX_WRITE_VERSION > le16_to_cpu(lvidiu->maxUDFWriteRev))
> - lvidiu->maxUDFWriteRev =
> - cpu_to_le16(UDF_MAX_WRITE_VERSION);
> - if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFReadRev))
> - lvidiu->minUDFReadRev = cpu_to_le16(sbi->s_udfrev);
> - if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFWriteRev))
> - lvidiu->minUDFWriteRev = cpu_to_le16(sbi->s_udfrev);
> - lvid->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE);
> -
> - lvid->descTag.descCRC = cpu_to_le16(
> - udf_crc((char *)lvid + sizeof(tag),
> - le16_to_cpu(lvid->descTag.descCRCLength),
> - 0));
> -
> - lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
> - mark_buffer_dirty(bh);
> - }
> + if (lvid->integrityType != LVID_INTEGRITY_TYPE_OPEN)
> + return;
> +
> + lvidiu = udf_sb_lvidiu(sbi);
> + lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
> + lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
> + udf_time_to_stamp(&lvid->recordingDateAndTime, CURRENT_TIME);
> + if (UDF_MAX_WRITE_VERSION > le16_to_cpu(lvidiu->maxUDFWriteRev))
> + lvidiu->maxUDFWriteRev = cpu_to_le16(UDF_MAX_WRITE_VERSION);
> + if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFReadRev))
> + lvidiu->minUDFReadRev = cpu_to_le16(sbi->s_udfrev);
> + if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFWriteRev))
> + lvidiu->minUDFWriteRev = cpu_to_le16(sbi->s_udfrev);
> + lvid->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE);
> +
> + lvid->descTag.descCRC = cpu_to_le16(
> + udf_crc((char *)lvid + sizeof(tag),
> + le16_to_cpu(lvid->descTag.descCRCLength),
> + 0));
> +
> + lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
> + mark_buffer_dirty(bh);
> }
>
> static void udf_sb_free_bitmap(struct udf_bitmap *bitmap)
> --
> 1.5.3.7
>
Honza
--
Jan Kara <jack@...e.cz>
SUSE Labs, CR
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