#define uint(x) xuint(x)
#define xuint(x) __le ## x
-static inline int find_next_one_bit (void * addr, int size, int offset)
+static inline int find_next_one_bit(void *addr, int size, int offset)
{
- uintBPL_t * p = ((uintBPL_t *) addr) + (offset / BITS_PER_LONG);
- int result = offset & ~(BITS_PER_LONG-1);
+ uintBPL_t *p = ((uintBPL_t *) addr) + (offset / BITS_PER_LONG);
+ int result = offset & ~(BITS_PER_LONG - 1);
unsigned long tmp;
if (offset >= size)
return size;
size -= result;
- offset &= (BITS_PER_LONG-1);
- if (offset)
- {
+ offset &= (BITS_PER_LONG - 1);
+ if (offset) {
tmp = leBPL_to_cpup(p++);
tmp &= ~0UL << offset;
if (size < BITS_PER_LONG)
size -= BITS_PER_LONG;
result += BITS_PER_LONG;
}
- while (size & ~(BITS_PER_LONG-1))
- {
+ while (size & ~(BITS_PER_LONG - 1)) {
if ((tmp = leBPL_to_cpup(p++)))
goto found_middle;
result += BITS_PER_LONG;
if (!size)
return result;
tmp = leBPL_to_cpup(p);
-found_first:
- tmp &= ~0UL >> (BITS_PER_LONG-size);
-found_middle:
+ found_first:
+ tmp &= ~0UL >> (BITS_PER_LONG - size);
+ found_middle:
return result + ffz(~tmp);
}
#define find_first_one_bit(addr, size)\
find_next_one_bit((addr), (size), 0)
-static int read_block_bitmap(struct super_block * sb,
- struct udf_bitmap *bitmap, unsigned int block, unsigned long bitmap_nr)
+static int read_block_bitmap(struct super_block *sb,
+ struct udf_bitmap *bitmap, unsigned int block,
+ unsigned long bitmap_nr)
{
struct buffer_head *bh = NULL;
int retval = 0;
loc.partitionReferenceNum = UDF_SB_PARTITION(sb);
bh = udf_tread(sb, udf_get_lb_pblock(sb, loc, block));
- if (!bh)
- {
+ if (!bh) {
retval = -EIO;
}
bitmap->s_block_bitmap[bitmap_nr] = bh;
return retval;
}
-static int __load_block_bitmap(struct super_block * sb,
- struct udf_bitmap *bitmap, unsigned int block_group)
+static int __load_block_bitmap(struct super_block *sb,
+ struct udf_bitmap *bitmap,
+ unsigned int block_group)
{
int retval = 0;
int nr_groups = bitmap->s_nr_groups;
- if (block_group >= nr_groups)
- {
- udf_debug("block_group (%d) > nr_groups (%d)\n", block_group, nr_groups);
+ if (block_group >= nr_groups) {
+ udf_debug("block_group (%d) > nr_groups (%d)\n", block_group,
+ nr_groups);
}
if (bitmap->s_block_bitmap[block_group])
return block_group;
- else
- {
- retval = read_block_bitmap(sb, bitmap, block_group, block_group);
+ else {
+ retval =
+ read_block_bitmap(sb, bitmap, block_group, block_group);
if (retval < 0)
return retval;
return block_group;
}
}
-static inline int load_block_bitmap(struct super_block * sb,
- struct udf_bitmap *bitmap, unsigned int block_group)
+static inline int load_block_bitmap(struct super_block *sb,
+ struct udf_bitmap *bitmap,
+ unsigned int block_group)
{
int slot;
return slot;
}
-static void udf_bitmap_free_blocks(struct super_block * sb,
- struct inode * inode,
- struct udf_bitmap *bitmap,
- kernel_lb_addr bloc, uint32_t offset, uint32_t count)
+static void udf_bitmap_free_blocks(struct super_block *sb,
+ struct inode *inode,
+ struct udf_bitmap *bitmap,
+ kernel_lb_addr bloc, uint32_t offset,
+ uint32_t count)
{
struct udf_sb_info *sbi = UDF_SB(sb);
- struct buffer_head * bh = NULL;
+ struct buffer_head *bh = NULL;
unsigned long block;
unsigned long block_group;
unsigned long bit;
int bitmap_nr;
unsigned long overflow;
- down(&sbi->s_alloc_sem);
+ mutex_lock(&sbi->s_alloc_mutex);
if (bloc.logicalBlockNum < 0 ||
- (bloc.logicalBlockNum + count) > UDF_SB_PARTLEN(sb, bloc.partitionReferenceNum))
- {
- udf_debug("%d < %d || %d + %d > %d\n",
- bloc.logicalBlockNum, 0, bloc.logicalBlockNum, count,
- UDF_SB_PARTLEN(sb, bloc.partitionReferenceNum));
+ (bloc.logicalBlockNum + count) > UDF_SB_PARTLEN(sb,
+ bloc.
+ partitionReferenceNum))
+ {
+ udf_debug("%d < %d || %d + %d > %d\n", bloc.logicalBlockNum, 0,
+ bloc.logicalBlockNum, count, UDF_SB_PARTLEN(sb,
+ bloc.
+ partitionReferenceNum));
goto error_return;
}
- block = bloc.logicalBlockNum + offset + (sizeof(struct spaceBitmapDesc) << 3);
+ block =
+ bloc.logicalBlockNum + offset +
+ (sizeof(struct spaceBitmapDesc) << 3);
-do_more:
+ do_more:
overflow = 0;
block_group = block >> (sb->s_blocksize_bits + 3);
bit = block % (sb->s_blocksize << 3);
/*
* Check to see if we are freeing blocks across a group boundary.
*/
- if (bit + count > (sb->s_blocksize << 3))
- {
+ if (bit + count > (sb->s_blocksize << 3)) {
overflow = bit + count - (sb->s_blocksize << 3);
count -= overflow;
}
goto error_return;
bh = bitmap->s_block_bitmap[bitmap_nr];
- for (i=0; i < count; i++)
- {
- if (udf_set_bit(bit + i, bh->b_data))
- {
+ for (i = 0; i < count; i++) {
+ if (udf_set_bit(bit + i, bh->b_data)) {
udf_debug("bit %ld already set\n", bit + i);
- udf_debug("byte=%2x\n", ((char *)bh->b_data)[(bit + i) >> 3]);
- }
- else
- {
+ udf_debug("byte=%2x\n",
+ ((char *)bh->b_data)[(bit + i) >> 3]);
+ } else {
if (inode)
DQUOT_FREE_BLOCK(inode, 1);
- if (UDF_SB_LVIDBH(sb))
- {
- UDF_SB_LVID(sb)->freeSpaceTable[UDF_SB_PARTITION(sb)] =
- cpu_to_le32(le32_to_cpu(UDF_SB_LVID(sb)->freeSpaceTable[UDF_SB_PARTITION(sb)])+1);
+ if (UDF_SB_LVIDBH(sb)) {
+ UDF_SB_LVID(sb)->
+ freeSpaceTable[UDF_SB_PARTITION(sb)] =
+ cpu_to_le32(le32_to_cpu
+ (UDF_SB_LVID(sb)->
+ freeSpaceTable[UDF_SB_PARTITION
+ (sb)]) + 1);
}
}
}
mark_buffer_dirty(bh);
- if (overflow)
- {
+ if (overflow) {
block += count;
count = overflow;
goto do_more;
}
-error_return:
+ error_return:
sb->s_dirt = 1;
if (UDF_SB_LVIDBH(sb))
mark_buffer_dirty(UDF_SB_LVIDBH(sb));
- up(&sbi->s_alloc_sem);
+ mutex_unlock(&sbi->s_alloc_mutex);
return;
}
-static int udf_bitmap_prealloc_blocks(struct super_block * sb,
- struct inode * inode,
- struct udf_bitmap *bitmap, uint16_t partition, uint32_t first_block,
- uint32_t block_count)
+static int udf_bitmap_prealloc_blocks(struct super_block *sb,
+ struct inode *inode,
+ struct udf_bitmap *bitmap,
+ uint16_t partition, uint32_t first_block,
+ uint32_t block_count)
{
struct udf_sb_info *sbi = UDF_SB(sb);
int alloc_count = 0;
int nr_groups, bitmap_nr;
struct buffer_head *bh;
- down(&sbi->s_alloc_sem);
+ mutex_lock(&sbi->s_alloc_mutex);
if (first_block < 0 || first_block >= UDF_SB_PARTLEN(sb, partition))
goto out;
if (first_block + block_count > UDF_SB_PARTLEN(sb, partition))
block_count = UDF_SB_PARTLEN(sb, partition) - first_block;
-repeat:
+ repeat:
nr_groups = (UDF_SB_PARTLEN(sb, partition) +
- (sizeof(struct spaceBitmapDesc) << 3) + (sb->s_blocksize * 8) - 1) / (sb->s_blocksize * 8);
+ (sizeof(struct spaceBitmapDesc) << 3) +
+ (sb->s_blocksize * 8) - 1) / (sb->s_blocksize * 8);
block = first_block + (sizeof(struct spaceBitmapDesc) << 3);
block_group = block >> (sb->s_blocksize_bits + 3);
group_start = block_group ? 0 : sizeof(struct spaceBitmapDesc);
bit = block % (sb->s_blocksize << 3);
- while (bit < (sb->s_blocksize << 3) && block_count > 0)
- {
+ while (bit < (sb->s_blocksize << 3) && block_count > 0) {
if (!udf_test_bit(bit, bh->b_data))
goto out;
else if (DQUOT_PREALLOC_BLOCK(inode, 1))
goto out;
- else if (!udf_clear_bit(bit, bh->b_data))
- {
+ else if (!udf_clear_bit(bit, bh->b_data)) {
udf_debug("bit already cleared for block %d\n", bit);
DQUOT_FREE_BLOCK(inode, 1);
goto out;
}
- block_count --;
- alloc_count ++;
- bit ++;
- block ++;
+ block_count--;
+ alloc_count++;
+ bit++;
+ block++;
}
mark_buffer_dirty(bh);
if (block_count > 0)
goto repeat;
-out:
- if (UDF_SB_LVIDBH(sb))
- {
+ out:
+ if (UDF_SB_LVIDBH(sb)) {
UDF_SB_LVID(sb)->freeSpaceTable[partition] =
- cpu_to_le32(le32_to_cpu(UDF_SB_LVID(sb)->freeSpaceTable[partition])-alloc_count);
+ cpu_to_le32(le32_to_cpu
+ (UDF_SB_LVID(sb)->freeSpaceTable[partition]) -
+ alloc_count);
mark_buffer_dirty(UDF_SB_LVIDBH(sb));
}
sb->s_dirt = 1;
- up(&sbi->s_alloc_sem);
+ mutex_unlock(&sbi->s_alloc_mutex);
return alloc_count;
}
-static int udf_bitmap_new_block(struct super_block * sb,
- struct inode * inode,
- struct udf_bitmap *bitmap, uint16_t partition, uint32_t goal, int *err)
+static int udf_bitmap_new_block(struct super_block *sb,
+ struct inode *inode,
+ struct udf_bitmap *bitmap, uint16_t partition,
+ uint32_t goal, int *err)
{
struct udf_sb_info *sbi = UDF_SB(sb);
- int newbit, bit=0, block, block_group, group_start;
+ int newbit, bit = 0, block, block_group, group_start;
int end_goal, nr_groups, bitmap_nr, i;
struct buffer_head *bh = NULL;
char *ptr;
int newblock = 0;
*err = -ENOSPC;
- down(&sbi->s_alloc_sem);
+ mutex_lock(&sbi->s_alloc_mutex);
-repeat:
+ repeat:
if (goal < 0 || goal >= UDF_SB_PARTLEN(sb, partition))
goal = 0;
if (bitmap_nr < 0)
goto error_return;
bh = bitmap->s_block_bitmap[bitmap_nr];
- ptr = memscan((char *)bh->b_data + group_start, 0xFF, sb->s_blocksize - group_start);
+ ptr =
+ memscan((char *)bh->b_data + group_start, 0xFF,
+ sb->s_blocksize - group_start);
- if ((ptr - ((char *)bh->b_data)) < sb->s_blocksize)
- {
+ if ((ptr - ((char *)bh->b_data)) < sb->s_blocksize) {
bit = block % (sb->s_blocksize << 3);
- if (udf_test_bit(bit, bh->b_data))
- {
+ if (udf_test_bit(bit, bh->b_data)) {
goto got_block;
}
end_goal = (bit + 63) & ~63;
bit = udf_find_next_one_bit(bh->b_data, end_goal, bit);
if (bit < end_goal)
goto got_block;
- ptr = memscan((char *)bh->b_data + (bit >> 3), 0xFF, sb->s_blocksize - ((bit + 7) >> 3));
+ ptr =
+ memscan((char *)bh->b_data + (bit >> 3), 0xFF,
+ sb->s_blocksize - ((bit + 7) >> 3));
newbit = (ptr - ((char *)bh->b_data)) << 3;
- if (newbit < sb->s_blocksize << 3)
- {
+ if (newbit < sb->s_blocksize << 3) {
bit = newbit;
goto search_back;
}
- newbit = udf_find_next_one_bit(bh->b_data, sb->s_blocksize << 3, bit);
- if (newbit < sb->s_blocksize << 3)
- {
+ newbit =
+ udf_find_next_one_bit(bh->b_data, sb->s_blocksize << 3,
+ bit);
+ if (newbit < sb->s_blocksize << 3) {
bit = newbit;
goto got_block;
}
}
- for (i=0; i<(nr_groups*2); i++)
- {
- block_group ++;
+ for (i = 0; i < (nr_groups * 2); i++) {
+ block_group++;
if (block_group >= nr_groups)
block_group = 0;
group_start = block_group ? 0 : sizeof(struct spaceBitmapDesc);
if (bitmap_nr < 0)
goto error_return;
bh = bitmap->s_block_bitmap[bitmap_nr];
- if (i < nr_groups)
- {
- ptr = memscan((char *)bh->b_data + group_start, 0xFF, sb->s_blocksize - group_start);
- if ((ptr - ((char *)bh->b_data)) < sb->s_blocksize)
- {
+ if (i < nr_groups) {
+ ptr =
+ memscan((char *)bh->b_data + group_start, 0xFF,
+ sb->s_blocksize - group_start);
+ if ((ptr - ((char *)bh->b_data)) < sb->s_blocksize) {
bit = (ptr - ((char *)bh->b_data)) << 3;
break;
}
- }
- else
- {
- bit = udf_find_next_one_bit((char *)bh->b_data, sb->s_blocksize << 3, group_start << 3);
+ } else {
+ bit =
+ udf_find_next_one_bit((char *)bh->b_data,
+ sb->s_blocksize << 3,
+ group_start << 3);
if (bit < sb->s_blocksize << 3)
break;
}
}
- if (i >= (nr_groups*2))
- {
- up(&sbi->s_alloc_sem);
+ if (i >= (nr_groups * 2)) {
+ mutex_unlock(&sbi->s_alloc_mutex);
return newblock;
}
if (bit < sb->s_blocksize << 3)
goto search_back;
else
- bit = udf_find_next_one_bit(bh->b_data, sb->s_blocksize << 3, group_start << 3);
- if (bit >= sb->s_blocksize << 3)
- {
- up(&sbi->s_alloc_sem);
+ bit =
+ udf_find_next_one_bit(bh->b_data, sb->s_blocksize << 3,
+ group_start << 3);
+ if (bit >= sb->s_blocksize << 3) {
+ mutex_unlock(&sbi->s_alloc_mutex);
return 0;
}
-search_back:
- for (i=0; i<7 && bit > (group_start << 3) && udf_test_bit(bit - 1, bh->b_data); i++, bit--);
+ search_back:
+ for (i = 0;
+ i < 7 && bit > (group_start << 3)
+ && udf_test_bit(bit - 1, bh->b_data); i++, bit--) ;
-got_block:
+ got_block:
/*
* Check quota for allocation of this block.
*/
- if (inode && DQUOT_ALLOC_BLOCK(inode, 1))
- {
- up(&sbi->s_alloc_sem);
+ if (inode && DQUOT_ALLOC_BLOCK(inode, 1)) {
+ mutex_unlock(&sbi->s_alloc_mutex);
*err = -EDQUOT;
return 0;
}
newblock = bit + (block_group << (sb->s_blocksize_bits + 3)) -
- (sizeof(struct spaceBitmapDesc) << 3);
+ (sizeof(struct spaceBitmapDesc) << 3);
- if (!udf_clear_bit(bit, bh->b_data))
- {
+ if (!udf_clear_bit(bit, bh->b_data)) {
udf_debug("bit already cleared for block %d\n", bit);
goto repeat;
}
mark_buffer_dirty(bh);
- if (UDF_SB_LVIDBH(sb))
- {
+ if (UDF_SB_LVIDBH(sb)) {
UDF_SB_LVID(sb)->freeSpaceTable[partition] =
- cpu_to_le32(le32_to_cpu(UDF_SB_LVID(sb)->freeSpaceTable[partition])-1);
+ cpu_to_le32(le32_to_cpu
+ (UDF_SB_LVID(sb)->freeSpaceTable[partition]) -
+ 1);
mark_buffer_dirty(UDF_SB_LVIDBH(sb));
}
sb->s_dirt = 1;
- up(&sbi->s_alloc_sem);
+ mutex_unlock(&sbi->s_alloc_mutex);
*err = 0;
return newblock;
-error_return:
+ error_return:
*err = -EIO;
- up(&sbi->s_alloc_sem);
+ mutex_unlock(&sbi->s_alloc_mutex);
return 0;
}
-static void udf_table_free_blocks(struct super_block * sb,
- struct inode * inode,
- struct inode * table,
- kernel_lb_addr bloc, uint32_t offset, uint32_t count)
+static void udf_table_free_blocks(struct super_block *sb,
+ struct inode *inode,
+ struct inode *table,
+ kernel_lb_addr bloc, uint32_t offset,
+ uint32_t count)
{
struct udf_sb_info *sbi = UDF_SB(sb);
uint32_t start, end;
- uint32_t nextoffset, oextoffset, elen;
- kernel_lb_addr nbloc, obloc, eloc;
- struct buffer_head *obh, *nbh;
+ uint32_t elen;
+ kernel_lb_addr eloc;
+ struct extent_position oepos, epos;
int8_t etype;
int i;
- down(&sbi->s_alloc_sem);
+ mutex_lock(&sbi->s_alloc_mutex);
if (bloc.logicalBlockNum < 0 ||
- (bloc.logicalBlockNum + count) > UDF_SB_PARTLEN(sb, bloc.partitionReferenceNum))
- {
- udf_debug("%d < %d || %d + %d > %d\n",
- bloc.logicalBlockNum, 0, bloc.logicalBlockNum, count,
- UDF_SB_PARTLEN(sb, bloc.partitionReferenceNum));
+ (bloc.logicalBlockNum + count) > UDF_SB_PARTLEN(sb,
+ bloc.
+ partitionReferenceNum))
+ {
+ udf_debug("%d < %d || %d + %d > %d\n", bloc.logicalBlockNum, 0,
+ bloc.logicalBlockNum, count, UDF_SB_PARTLEN(sb,
+ bloc.
+ partitionReferenceNum));
goto error_return;
}
but.. oh well */
if (inode)
DQUOT_FREE_BLOCK(inode, count);
- if (UDF_SB_LVIDBH(sb))
- {
+ if (UDF_SB_LVIDBH(sb)) {
UDF_SB_LVID(sb)->freeSpaceTable[UDF_SB_PARTITION(sb)] =
- cpu_to_le32(le32_to_cpu(UDF_SB_LVID(sb)->freeSpaceTable[UDF_SB_PARTITION(sb)])+count);
+ cpu_to_le32(le32_to_cpu
+ (UDF_SB_LVID(sb)->
+ freeSpaceTable[UDF_SB_PARTITION(sb)]) + count);
mark_buffer_dirty(UDF_SB_LVIDBH(sb));
}
start = bloc.logicalBlockNum + offset;
end = bloc.logicalBlockNum + offset + count - 1;
- oextoffset = nextoffset = sizeof(struct unallocSpaceEntry);
+ epos.offset = oepos.offset = sizeof(struct unallocSpaceEntry);
elen = 0;
- obloc = nbloc = UDF_I_LOCATION(table);
-
- obh = nbh = NULL;
+ epos.block = oepos.block = UDF_I_LOCATION(table);
+ epos.bh = oepos.bh = NULL;
while (count && (etype =
- udf_next_aext(table, &nbloc, &nextoffset, &eloc, &elen, &nbh, 1)) != -1)
- {
+ udf_next_aext(table, &epos, &eloc, &elen, 1)) != -1) {
if (((eloc.logicalBlockNum + (elen >> sb->s_blocksize_bits)) ==
- start))
- {
- if ((0x3FFFFFFF - elen) < (count << sb->s_blocksize_bits))
- {
- count -= ((0x3FFFFFFF - elen) >> sb->s_blocksize_bits);
- start += ((0x3FFFFFFF - elen) >> sb->s_blocksize_bits);
- elen = (etype << 30) | (0x40000000 - sb->s_blocksize);
- }
- else
- {
+ start)) {
+ if ((0x3FFFFFFF - elen) <
+ (count << sb->s_blocksize_bits)) {
+ count -=
+ ((0x3FFFFFFF -
+ elen) >> sb->s_blocksize_bits);
+ start +=
+ ((0x3FFFFFFF -
+ elen) >> sb->s_blocksize_bits);
+ elen =
+ (etype << 30) | (0x40000000 -
+ sb->s_blocksize);
+ } else {
elen = (etype << 30) |
- (elen + (count << sb->s_blocksize_bits));
+ (elen + (count << sb->s_blocksize_bits));
start += count;
count = 0;
}
- udf_write_aext(table, obloc, &oextoffset, eloc, elen, obh, 1);
- }
- else if (eloc.logicalBlockNum == (end + 1))
- {
- if ((0x3FFFFFFF - elen) < (count << sb->s_blocksize_bits))
- {
- count -= ((0x3FFFFFFF - elen) >> sb->s_blocksize_bits);
- end -= ((0x3FFFFFFF - elen) >> sb->s_blocksize_bits);
+ udf_write_aext(table, &oepos, eloc, elen, 1);
+ } else if (eloc.logicalBlockNum == (end + 1)) {
+ if ((0x3FFFFFFF - elen) <
+ (count << sb->s_blocksize_bits)) {
+ count -=
+ ((0x3FFFFFFF -
+ elen) >> sb->s_blocksize_bits);
+ end -=
+ ((0x3FFFFFFF -
+ elen) >> sb->s_blocksize_bits);
eloc.logicalBlockNum -=
- ((0x3FFFFFFF - elen) >> sb->s_blocksize_bits);
- elen = (etype << 30) | (0x40000000 - sb->s_blocksize);
- }
- else
- {
+ ((0x3FFFFFFF -
+ elen) >> sb->s_blocksize_bits);
+ elen =
+ (etype << 30) | (0x40000000 -
+ sb->s_blocksize);
+ } else {
eloc.logicalBlockNum = start;
elen = (etype << 30) |
- (elen + (count << sb->s_blocksize_bits));
+ (elen + (count << sb->s_blocksize_bits));
end -= count;
count = 0;
}
- udf_write_aext(table, obloc, &oextoffset, eloc, elen, obh, 1);
+ udf_write_aext(table, &oepos, eloc, elen, 1);
}
- if (nbh != obh)
- {
+ if (epos.bh != oepos.bh) {
i = -1;
- obloc = nbloc;
- udf_release_data(obh);
- atomic_inc(&nbh->b_count);
- obh = nbh;
- oextoffset = 0;
- }
- else
- oextoffset = nextoffset;
+ oepos.block = epos.block;
+ brelse(oepos.bh);
+ get_bh(epos.bh);
+ oepos.bh = epos.bh;
+ oepos.offset = 0;
+ } else
+ oepos.offset = epos.offset;
}
- if (count)
- {
+ if (count) {
/* NOTE: we CANNOT use udf_add_aext here, as it can try to allocate
- a new block, and since we hold the super block lock already
- very bad things would happen :)
+ a new block, and since we hold the super block lock already
+ very bad things would happen :)
- We copy the behavior of udf_add_aext, but instead of
- trying to allocate a new block close to the existing one,
- we just steal a block from the extent we are trying to add.
+ We copy the behavior of udf_add_aext, but instead of
+ trying to allocate a new block close to the existing one,
+ we just steal a block from the extent we are trying to add.
- It would be nice if the blocks were close together, but it
- isn't required.
- */
+ It would be nice if the blocks were close together, but it
+ isn't required.
+ */
int adsize;
short_ad *sad = NULL;
struct allocExtDesc *aed;
eloc.logicalBlockNum = start;
- elen = EXT_RECORDED_ALLOCATED |
- (count << sb->s_blocksize_bits);
+ elen = EXT_RECORDED_ALLOCATED | (count << sb->s_blocksize_bits);
if (UDF_I_ALLOCTYPE(table) == ICBTAG_FLAG_AD_SHORT)
adsize = sizeof(short_ad);
else if (UDF_I_ALLOCTYPE(table) == ICBTAG_FLAG_AD_LONG)
adsize = sizeof(long_ad);
- else
- {
- udf_release_data(obh);
- udf_release_data(nbh);
+ else {
+ brelse(oepos.bh);
+ brelse(epos.bh);
goto error_return;
}
- if (nextoffset + (2 * adsize) > sb->s_blocksize)
- {
+ if (epos.offset + (2 * adsize) > sb->s_blocksize) {
char *sptr, *dptr;
int loffset;
-
- udf_release_data(obh);
- obh = nbh;
- obloc = nbloc;
- oextoffset = nextoffset;
+
+ brelse(oepos.bh);
+ oepos = epos;
/* Steal a block from the extent being free'd */
- nbloc.logicalBlockNum = eloc.logicalBlockNum;
- eloc.logicalBlockNum ++;
+ epos.block.logicalBlockNum = eloc.logicalBlockNum;
+ eloc.logicalBlockNum++;
elen -= sb->s_blocksize;
- if (!(nbh = udf_tread(sb,
- udf_get_lb_pblock(sb, nbloc, 0))))
- {
- udf_release_data(obh);
+ if (!(epos.bh = udf_tread(sb,
+ udf_get_lb_pblock(sb,
+ epos.block,
+ 0)))) {
+ brelse(oepos.bh);
goto error_return;
}
- aed = (struct allocExtDesc *)(nbh->b_data);
- aed->previousAllocExtLocation = cpu_to_le32(obloc.logicalBlockNum);
- if (nextoffset + adsize > sb->s_blocksize)
- {
- loffset = nextoffset;
+ aed = (struct allocExtDesc *)(epos.bh->b_data);
+ aed->previousAllocExtLocation =
+ cpu_to_le32(oepos.block.logicalBlockNum);
+ if (epos.offset + adsize > sb->s_blocksize) {
+ loffset = epos.offset;
aed->lengthAllocDescs = cpu_to_le32(adsize);
- sptr = UDF_I_DATA(inode) + nextoffset -
- udf_file_entry_alloc_offset(inode) +
- UDF_I_LENEATTR(inode) - adsize;
- dptr = nbh->b_data + sizeof(struct allocExtDesc);
+ sptr = UDF_I_DATA(inode) + epos.offset -
+ udf_file_entry_alloc_offset(inode) +
+ UDF_I_LENEATTR(inode) - adsize;
+ dptr =
+ epos.bh->b_data +
+ sizeof(struct allocExtDesc);
memcpy(dptr, sptr, adsize);
- nextoffset = sizeof(struct allocExtDesc) + adsize;
- }
- else
- {
- loffset = nextoffset + adsize;
+ epos.offset =
+ sizeof(struct allocExtDesc) + adsize;
+ } else {
+ loffset = epos.offset + adsize;
aed->lengthAllocDescs = cpu_to_le32(0);
- sptr = (obh)->b_data + nextoffset;
- nextoffset = sizeof(struct allocExtDesc);
+ sptr = oepos.bh->b_data + epos.offset;
+ epos.offset = sizeof(struct allocExtDesc);
- if (obh)
- {
- aed = (struct allocExtDesc *)(obh)->b_data;
+ if (oepos.bh) {
+ aed =
+ (struct allocExtDesc *)oepos.bh->
+ b_data;
aed->lengthAllocDescs =
- cpu_to_le32(le32_to_cpu(aed->lengthAllocDescs) + adsize);
- }
- else
- {
+ cpu_to_le32(le32_to_cpu
+ (aed->
+ lengthAllocDescs) +
+ adsize);
+ } else {
UDF_I_LENALLOC(table) += adsize;
mark_inode_dirty(table);
}
}
if (UDF_SB_UDFREV(sb) >= 0x0200)
- udf_new_tag(nbh->b_data, TAG_IDENT_AED, 3, 1,
- nbloc.logicalBlockNum, sizeof(tag));
+ udf_new_tag(epos.bh->b_data, TAG_IDENT_AED, 3,
+ 1, epos.block.logicalBlockNum,
+ sizeof(tag));
else
- udf_new_tag(nbh->b_data, TAG_IDENT_AED, 2, 1,
- nbloc.logicalBlockNum, sizeof(tag));
- switch (UDF_I_ALLOCTYPE(table))
- {
- case ICBTAG_FLAG_AD_SHORT:
+ udf_new_tag(epos.bh->b_data, TAG_IDENT_AED, 2,
+ 1, epos.block.logicalBlockNum,
+ sizeof(tag));
+ switch (UDF_I_ALLOCTYPE(table)) {
+ case ICBTAG_FLAG_AD_SHORT:
{
- sad = (short_ad *)sptr;
- sad->extLength = cpu_to_le32(
- EXT_NEXT_EXTENT_ALLOCDECS |
- sb->s_blocksize);
- sad->extPosition = cpu_to_le32(nbloc.logicalBlockNum);
+ sad = (short_ad *) sptr;
+ sad->extLength =
+ cpu_to_le32
+ (EXT_NEXT_EXTENT_ALLOCDECS | sb->
+ s_blocksize);
+ sad->extPosition =
+ cpu_to_le32(epos.block.
+ logicalBlockNum);
break;
}
- case ICBTAG_FLAG_AD_LONG:
+ case ICBTAG_FLAG_AD_LONG:
{
- lad = (long_ad *)sptr;
- lad->extLength = cpu_to_le32(
- EXT_NEXT_EXTENT_ALLOCDECS |
- sb->s_blocksize);
- lad->extLocation = cpu_to_lelb(nbloc);
+ lad = (long_ad *) sptr;
+ lad->extLength =
+ cpu_to_le32
+ (EXT_NEXT_EXTENT_ALLOCDECS | sb->
+ s_blocksize);
+ lad->extLocation =
+ cpu_to_lelb(epos.block);
break;
}
}
- if (obh)
- {
- udf_update_tag(obh->b_data, loffset);
- mark_buffer_dirty(obh);
- }
- else
+ if (oepos.bh) {
+ udf_update_tag(oepos.bh->b_data, loffset);
+ mark_buffer_dirty(oepos.bh);
+ } else
mark_inode_dirty(table);
}
- if (elen) /* It's possible that stealing the block emptied the extent */
- {
- udf_write_aext(table, nbloc, &nextoffset, eloc, elen, nbh, 1);
+ if (elen) { /* It's possible that stealing the block emptied the extent */
+ udf_write_aext(table, &epos, eloc, elen, 1);
- if (!nbh)
- {
+ if (!epos.bh) {
UDF_I_LENALLOC(table) += adsize;
mark_inode_dirty(table);
- }
- else
- {
- aed = (struct allocExtDesc *)nbh->b_data;
+ } else {
+ aed = (struct allocExtDesc *)epos.bh->b_data;
aed->lengthAllocDescs =
- cpu_to_le32(le32_to_cpu(aed->lengthAllocDescs) + adsize);
- udf_update_tag(nbh->b_data, nextoffset);
- mark_buffer_dirty(nbh);
+ cpu_to_le32(le32_to_cpu
+ (aed->lengthAllocDescs) +
+ adsize);
+ udf_update_tag(epos.bh->b_data, epos.offset);
+ mark_buffer_dirty(epos.bh);
}
}
}
- udf_release_data(nbh);
- udf_release_data(obh);
+ brelse(epos.bh);
+ brelse(oepos.bh);
-error_return:
+ error_return:
sb->s_dirt = 1;
- up(&sbi->s_alloc_sem);
+ mutex_unlock(&sbi->s_alloc_mutex);
return;
}
-static int udf_table_prealloc_blocks(struct super_block * sb,
- struct inode * inode,
- struct inode *table, uint16_t partition, uint32_t first_block,
- uint32_t block_count)
+static int udf_table_prealloc_blocks(struct super_block *sb,
+ struct inode *inode,
+ struct inode *table, uint16_t partition,
+ uint32_t first_block, uint32_t block_count)
{
struct udf_sb_info *sbi = UDF_SB(sb);
int alloc_count = 0;
- uint32_t extoffset, elen, adsize;
- kernel_lb_addr bloc, eloc;
- struct buffer_head *bh;
+ uint32_t elen, adsize;
+ kernel_lb_addr eloc;
+ struct extent_position epos;
int8_t etype = -1;
if (first_block < 0 || first_block >= UDF_SB_PARTLEN(sb, partition))
else
return 0;
- down(&sbi->s_alloc_sem);
- extoffset = sizeof(struct unallocSpaceEntry);
- bloc = UDF_I_LOCATION(table);
-
- bh = NULL;
+ mutex_lock(&sbi->s_alloc_mutex);
+ epos.offset = sizeof(struct unallocSpaceEntry);
+ epos.block = UDF_I_LOCATION(table);
+ epos.bh = NULL;
eloc.logicalBlockNum = 0xFFFFFFFF;
while (first_block != eloc.logicalBlockNum && (etype =
- udf_next_aext(table, &bloc, &extoffset, &eloc, &elen, &bh, 1)) != -1)
- {
+ udf_next_aext(table,
+ &epos,
+ &eloc,
+ &elen,
+ 1)) !=
+ -1) {
udf_debug("eloc=%d, elen=%d, first_block=%d\n",
- eloc.logicalBlockNum, elen, first_block);
- ; /* empty loop body */
+ eloc.logicalBlockNum, elen, first_block);
+ ; /* empty loop body */
}
- if (first_block == eloc.logicalBlockNum)
- {
- extoffset -= adsize;
+ if (first_block == eloc.logicalBlockNum) {
+ epos.offset -= adsize;
alloc_count = (elen >> sb->s_blocksize_bits);
- if (inode && DQUOT_PREALLOC_BLOCK(inode, alloc_count > block_count ? block_count : alloc_count))
+ if (inode
+ && DQUOT_PREALLOC_BLOCK(inode,
+ alloc_count >
+ block_count ? block_count :
+ alloc_count))
alloc_count = 0;
- else if (alloc_count > block_count)
- {
+ else if (alloc_count > block_count) {
alloc_count = block_count;
eloc.logicalBlockNum += alloc_count;
elen -= (alloc_count << sb->s_blocksize_bits);
- udf_write_aext(table, bloc, &extoffset, eloc, (etype << 30) | elen, bh, 1);
- }
- else
- udf_delete_aext(table, bloc, extoffset, eloc, (etype << 30) | elen, bh);
- }
- else
+ udf_write_aext(table, &epos, eloc, (etype << 30) | elen,
+ 1);
+ } else
+ udf_delete_aext(table, epos, eloc,
+ (etype << 30) | elen);
+ } else
alloc_count = 0;
- udf_release_data(bh);
+ brelse(epos.bh);
- if (alloc_count && UDF_SB_LVIDBH(sb))
- {
+ if (alloc_count && UDF_SB_LVIDBH(sb)) {
UDF_SB_LVID(sb)->freeSpaceTable[partition] =
- cpu_to_le32(le32_to_cpu(UDF_SB_LVID(sb)->freeSpaceTable[partition])-alloc_count);
+ cpu_to_le32(le32_to_cpu
+ (UDF_SB_LVID(sb)->freeSpaceTable[partition]) -
+ alloc_count);
mark_buffer_dirty(UDF_SB_LVIDBH(sb));
sb->s_dirt = 1;
}
- up(&sbi->s_alloc_sem);
+ mutex_unlock(&sbi->s_alloc_mutex);
return alloc_count;
}
-static int udf_table_new_block(struct super_block * sb,
- struct inode * inode,
- struct inode *table, uint16_t partition, uint32_t goal, int *err)
+static int udf_table_new_block(struct super_block *sb,
+ struct inode *inode,
+ struct inode *table, uint16_t partition,
+ uint32_t goal, int *err)
{
struct udf_sb_info *sbi = UDF_SB(sb);
uint32_t spread = 0xFFFFFFFF, nspread = 0xFFFFFFFF;
uint32_t newblock = 0, adsize;
- uint32_t extoffset, goal_extoffset, elen, goal_elen = 0;
- kernel_lb_addr bloc, goal_bloc, eloc, goal_eloc;
- struct buffer_head *bh, *goal_bh;
+ uint32_t elen, goal_elen = 0;
+ kernel_lb_addr eloc, goal_eloc;
+ struct extent_position epos, goal_epos;
int8_t etype;
*err = -ENOSPC;
else
return newblock;
- down(&sbi->s_alloc_sem);
+ mutex_lock(&sbi->s_alloc_mutex);
if (goal < 0 || goal >= UDF_SB_PARTLEN(sb, partition))
goal = 0;
we stop. Otherwise we keep going till we run out of extents.
We store the buffer_head, bloc, and extoffset of the current closest
match and use that when we are done.
- */
-
- extoffset = sizeof(struct unallocSpaceEntry);
- bloc = UDF_I_LOCATION(table);
-
- goal_bh = bh = NULL;
+ */
+ epos.offset = sizeof(struct unallocSpaceEntry);
+ epos.block = UDF_I_LOCATION(table);
+ epos.bh = goal_epos.bh = NULL;
while (spread && (etype =
- udf_next_aext(table, &bloc, &extoffset, &eloc, &elen, &bh, 1)) != -1)
- {
- if (goal >= eloc.logicalBlockNum)
- {
- if (goal < eloc.logicalBlockNum + (elen >> sb->s_blocksize_bits))
+ udf_next_aext(table, &epos, &eloc, &elen, 1)) != -1) {
+ if (goal >= eloc.logicalBlockNum) {
+ if (goal <
+ eloc.logicalBlockNum +
+ (elen >> sb->s_blocksize_bits))
nspread = 0;
else
nspread = goal - eloc.logicalBlockNum -
- (elen >> sb->s_blocksize_bits);
- }
- else
+ (elen >> sb->s_blocksize_bits);
+ } else
nspread = eloc.logicalBlockNum - goal;
- if (nspread < spread)
- {
+ if (nspread < spread) {
spread = nspread;
- if (goal_bh != bh)
- {
- udf_release_data(goal_bh);
- goal_bh = bh;
- atomic_inc(&goal_bh->b_count);
+ if (goal_epos.bh != epos.bh) {
+ brelse(goal_epos.bh);
+ goal_epos.bh = epos.bh;
+ get_bh(goal_epos.bh);
}
- goal_bloc = bloc;
- goal_extoffset = extoffset - adsize;
+ goal_epos.block = epos.block;
+ goal_epos.offset = epos.offset - adsize;
goal_eloc = eloc;
goal_elen = (etype << 30) | elen;
}
}
- udf_release_data(bh);
+ brelse(epos.bh);
- if (spread == 0xFFFFFFFF)
- {
- udf_release_data(goal_bh);
- up(&sbi->s_alloc_sem);
+ if (spread == 0xFFFFFFFF) {
+ brelse(goal_epos.bh);
+ mutex_unlock(&sbi->s_alloc_mutex);
return 0;
}
/* This works, but very poorly.... */
newblock = goal_eloc.logicalBlockNum;
- goal_eloc.logicalBlockNum ++;
+ goal_eloc.logicalBlockNum++;
goal_elen -= sb->s_blocksize;
- if (inode && DQUOT_ALLOC_BLOCK(inode, 1))
- {
- udf_release_data(goal_bh);
- up(&sbi->s_alloc_sem);
+ if (inode && DQUOT_ALLOC_BLOCK(inode, 1)) {
+ brelse(goal_epos.bh);
+ mutex_unlock(&sbi->s_alloc_mutex);
*err = -EDQUOT;
return 0;
}
if (goal_elen)
- udf_write_aext(table, goal_bloc, &goal_extoffset, goal_eloc, goal_elen, goal_bh, 1);
+ udf_write_aext(table, &goal_epos, goal_eloc, goal_elen, 1);
else
- udf_delete_aext(table, goal_bloc, goal_extoffset, goal_eloc, goal_elen, goal_bh);
- udf_release_data(goal_bh);
+ udf_delete_aext(table, goal_epos, goal_eloc, goal_elen);
+ brelse(goal_epos.bh);
- if (UDF_SB_LVIDBH(sb))
- {
+ if (UDF_SB_LVIDBH(sb)) {
UDF_SB_LVID(sb)->freeSpaceTable[partition] =
- cpu_to_le32(le32_to_cpu(UDF_SB_LVID(sb)->freeSpaceTable[partition])-1);
+ cpu_to_le32(le32_to_cpu
+ (UDF_SB_LVID(sb)->freeSpaceTable[partition]) -
+ 1);
mark_buffer_dirty(UDF_SB_LVIDBH(sb));
}
sb->s_dirt = 1;
- up(&sbi->s_alloc_sem);
+ mutex_unlock(&sbi->s_alloc_mutex);
*err = 0;
return newblock;
}
-inline void udf_free_blocks(struct super_block * sb,
- struct inode * inode,
- kernel_lb_addr bloc, uint32_t offset, uint32_t count)
+inline void udf_free_blocks(struct super_block *sb,
+ struct inode *inode,
+ kernel_lb_addr bloc, uint32_t offset,
+ uint32_t count)
{
uint16_t partition = bloc.partitionReferenceNum;
- if (UDF_SB_PARTFLAGS(sb, partition) & UDF_PART_FLAG_UNALLOC_BITMAP)
- {
+ if (UDF_SB_PARTFLAGS(sb, partition) & UDF_PART_FLAG_UNALLOC_BITMAP) {
return udf_bitmap_free_blocks(sb, inode,
- UDF_SB_PARTMAPS(sb)[partition].s_uspace.s_bitmap,
- bloc, offset, count);
- }
- else if (UDF_SB_PARTFLAGS(sb, partition) & UDF_PART_FLAG_UNALLOC_TABLE)
- {
+ UDF_SB_PARTMAPS(sb)[partition].
+ s_uspace.s_bitmap, bloc, offset,
+ count);
+ } else if (UDF_SB_PARTFLAGS(sb, partition) &
+ UDF_PART_FLAG_UNALLOC_TABLE) {
return udf_table_free_blocks(sb, inode,
- UDF_SB_PARTMAPS(sb)[partition].s_uspace.s_table,
- bloc, offset, count);
- }
- else if (UDF_SB_PARTFLAGS(sb, partition) & UDF_PART_FLAG_FREED_BITMAP)
- {
+ UDF_SB_PARTMAPS(sb)[partition].
+ s_uspace.s_table, bloc, offset,
+ count);
+ } else if (UDF_SB_PARTFLAGS(sb, partition) & UDF_PART_FLAG_FREED_BITMAP) {
return udf_bitmap_free_blocks(sb, inode,
- UDF_SB_PARTMAPS(sb)[partition].s_fspace.s_bitmap,
- bloc, offset, count);
- }
- else if (UDF_SB_PARTFLAGS(sb, partition) & UDF_PART_FLAG_FREED_TABLE)
- {
+ UDF_SB_PARTMAPS(sb)[partition].
+ s_fspace.s_bitmap, bloc, offset,
+ count);
+ } else if (UDF_SB_PARTFLAGS(sb, partition) & UDF_PART_FLAG_FREED_TABLE) {
return udf_table_free_blocks(sb, inode,
- UDF_SB_PARTMAPS(sb)[partition].s_fspace.s_table,
- bloc, offset, count);
- }
- else
+ UDF_SB_PARTMAPS(sb)[partition].
+ s_fspace.s_table, bloc, offset,
+ count);
+ } else
return;
}
-inline int udf_prealloc_blocks(struct super_block * sb,
- struct inode * inode,
- uint16_t partition, uint32_t first_block, uint32_t block_count)
+inline int udf_prealloc_blocks(struct super_block *sb,
+ struct inode *inode,
+ uint16_t partition, uint32_t first_block,
+ uint32_t block_count)
{
- if (UDF_SB_PARTFLAGS(sb, partition) & UDF_PART_FLAG_UNALLOC_BITMAP)
- {
+ if (UDF_SB_PARTFLAGS(sb, partition) & UDF_PART_FLAG_UNALLOC_BITMAP) {
return udf_bitmap_prealloc_blocks(sb, inode,
- UDF_SB_PARTMAPS(sb)[partition].s_uspace.s_bitmap,
- partition, first_block, block_count);
- }
- else if (UDF_SB_PARTFLAGS(sb, partition) & UDF_PART_FLAG_UNALLOC_TABLE)
- {
+ UDF_SB_PARTMAPS(sb)
+ [partition].s_uspace.s_bitmap,
+ partition, first_block,
+ block_count);
+ } else if (UDF_SB_PARTFLAGS(sb, partition) &
+ UDF_PART_FLAG_UNALLOC_TABLE) {
return udf_table_prealloc_blocks(sb, inode,
- UDF_SB_PARTMAPS(sb)[partition].s_uspace.s_table,
- partition, first_block, block_count);
- }
- else if (UDF_SB_PARTFLAGS(sb, partition) & UDF_PART_FLAG_FREED_BITMAP)
- {
+ UDF_SB_PARTMAPS(sb)[partition].
+ s_uspace.s_table, partition,
+ first_block, block_count);
+ } else if (UDF_SB_PARTFLAGS(sb, partition) & UDF_PART_FLAG_FREED_BITMAP) {
return udf_bitmap_prealloc_blocks(sb, inode,
- UDF_SB_PARTMAPS(sb)[partition].s_fspace.s_bitmap,
- partition, first_block, block_count);
- }
- else if (UDF_SB_PARTFLAGS(sb, partition) & UDF_PART_FLAG_FREED_TABLE)
- {
+ UDF_SB_PARTMAPS(sb)
+ [partition].s_fspace.s_bitmap,
+ partition, first_block,
+ block_count);
+ } else if (UDF_SB_PARTFLAGS(sb, partition) & UDF_PART_FLAG_FREED_TABLE) {
return udf_table_prealloc_blocks(sb, inode,
- UDF_SB_PARTMAPS(sb)[partition].s_fspace.s_table,
- partition, first_block, block_count);
- }
- else
+ UDF_SB_PARTMAPS(sb)[partition].
+ s_fspace.s_table, partition,
+ first_block, block_count);
+ } else
return 0;
}
-inline int udf_new_block(struct super_block * sb,
- struct inode * inode,
- uint16_t partition, uint32_t goal, int *err)
+inline int udf_new_block(struct super_block *sb,
+ struct inode *inode,
+ uint16_t partition, uint32_t goal, int *err)
{
- if (UDF_SB_PARTFLAGS(sb, partition) & UDF_PART_FLAG_UNALLOC_BITMAP)
- {
- return udf_bitmap_new_block(sb, inode,
- UDF_SB_PARTMAPS(sb)[partition].s_uspace.s_bitmap,
- partition, goal, err);
- }
- else if (UDF_SB_PARTFLAGS(sb, partition) & UDF_PART_FLAG_UNALLOC_TABLE)
- {
+ int ret;
+
+ if (UDF_SB_PARTFLAGS(sb, partition) & UDF_PART_FLAG_UNALLOC_BITMAP) {
+ ret = udf_bitmap_new_block(sb, inode,
+ UDF_SB_PARTMAPS(sb)[partition].
+ s_uspace.s_bitmap, partition, goal,
+ err);
+ return ret;
+ } else if (UDF_SB_PARTFLAGS(sb, partition) &
+ UDF_PART_FLAG_UNALLOC_TABLE) {
return udf_table_new_block(sb, inode,
- UDF_SB_PARTMAPS(sb)[partition].s_uspace.s_table,
- partition, goal, err);
- }
- else if (UDF_SB_PARTFLAGS(sb, partition) & UDF_PART_FLAG_FREED_BITMAP)
- {
+ UDF_SB_PARTMAPS(sb)[partition].
+ s_uspace.s_table, partition, goal,
+ err);
+ } else if (UDF_SB_PARTFLAGS(sb, partition) & UDF_PART_FLAG_FREED_BITMAP) {
return udf_bitmap_new_block(sb, inode,
- UDF_SB_PARTMAPS(sb)[partition].s_fspace.s_bitmap,
- partition, goal, err);
- }
- else if (UDF_SB_PARTFLAGS(sb, partition) & UDF_PART_FLAG_FREED_TABLE)
- {
+ UDF_SB_PARTMAPS(sb)[partition].
+ s_fspace.s_bitmap, partition, goal,
+ err);
+ } else if (UDF_SB_PARTFLAGS(sb, partition) & UDF_PART_FLAG_FREED_TABLE) {
return udf_table_new_block(sb, inode,
- UDF_SB_PARTMAPS(sb)[partition].s_fspace.s_table,
- partition, goal, err);
- }
- else
- {
+ UDF_SB_PARTMAPS(sb)[partition].
+ s_fspace.s_table, partition, goal,
+ err);
+ } else {
*err = -EIO;
return 0;
}
git.samba.org / sfrench / cifs-2.6.git / blobdiff