static void __hfsplus_ext_write_extent(struct inode *inode, struct hfs_find_data *fd)
{
+ struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
int res;
- hfsplus_ext_build_key(fd->search_key, inode->i_ino, HFSPLUS_I(inode).cached_start,
- HFSPLUS_IS_RSRC(inode) ? HFSPLUS_TYPE_RSRC : HFSPLUS_TYPE_DATA);
+ WARN_ON(!mutex_is_locked(&hip->extents_lock));
+
+ hfsplus_ext_build_key(fd->search_key, inode->i_ino, hip->cached_start,
+ HFSPLUS_IS_RSRC(inode) ?
+ HFSPLUS_TYPE_RSRC : HFSPLUS_TYPE_DATA);
+
res = hfs_brec_find(fd);
- if (HFSPLUS_I(inode).flags & HFSPLUS_FLG_EXT_NEW) {
+ if (hip->flags & HFSPLUS_FLG_EXT_NEW) {
if (res != -ENOENT)
return;
- hfs_brec_insert(fd, HFSPLUS_I(inode).cached_extents, sizeof(hfsplus_extent_rec));
- HFSPLUS_I(inode).flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW);
+ hfs_brec_insert(fd, hip->cached_extents,
+ sizeof(hfsplus_extent_rec));
+ hip->flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW);
} else {
if (res)
return;
- hfs_bnode_write(fd->bnode, HFSPLUS_I(inode).cached_extents, fd->entryoffset, fd->entrylength);
- HFSPLUS_I(inode).flags &= ~HFSPLUS_FLG_EXT_DIRTY;
+ hfs_bnode_write(fd->bnode, hip->cached_extents,
+ fd->entryoffset, fd->entrylength);
+ hip->flags &= ~HFSPLUS_FLG_EXT_DIRTY;
}
}
-void hfsplus_ext_write_extent(struct inode *inode)
+static void hfsplus_ext_write_extent_locked(struct inode *inode)
{
- if (HFSPLUS_I(inode).flags & HFSPLUS_FLG_EXT_DIRTY) {
+ if (HFSPLUS_I(inode)->flags & HFSPLUS_FLG_EXT_DIRTY) {
struct hfs_find_data fd;
- hfs_find_init(HFSPLUS_SB(inode->i_sb).ext_tree, &fd);
+ hfs_find_init(HFSPLUS_SB(inode->i_sb)->ext_tree, &fd);
__hfsplus_ext_write_extent(inode, &fd);
hfs_find_exit(&fd);
}
}
+void hfsplus_ext_write_extent(struct inode *inode)
+{
+ mutex_lock(&HFSPLUS_I(inode)->extents_lock);
+ hfsplus_ext_write_extent_locked(inode);
+ mutex_unlock(&HFSPLUS_I(inode)->extents_lock);
+}
+
static inline int __hfsplus_ext_read_extent(struct hfs_find_data *fd,
struct hfsplus_extent *extent,
u32 cnid, u32 block, u8 type)
static inline int __hfsplus_ext_cache_extent(struct hfs_find_data *fd, struct inode *inode, u32 block)
{
+ struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
int res;
- if (HFSPLUS_I(inode).flags & HFSPLUS_FLG_EXT_DIRTY)
+ WARN_ON(!mutex_is_locked(&hip->extents_lock));
+
+ if (hip->flags & HFSPLUS_FLG_EXT_DIRTY)
__hfsplus_ext_write_extent(inode, fd);
- res = __hfsplus_ext_read_extent(fd, HFSPLUS_I(inode).cached_extents, inode->i_ino,
- block, HFSPLUS_IS_RSRC(inode) ? HFSPLUS_TYPE_RSRC : HFSPLUS_TYPE_DATA);
+ res = __hfsplus_ext_read_extent(fd, hip->cached_extents, inode->i_ino,
+ block, HFSPLUS_IS_RSRC(inode) ?
+ HFSPLUS_TYPE_RSRC :
+ HFSPLUS_TYPE_DATA);
if (!res) {
- HFSPLUS_I(inode).cached_start = be32_to_cpu(fd->key->ext.start_block);
- HFSPLUS_I(inode).cached_blocks = hfsplus_ext_block_count(HFSPLUS_I(inode).cached_extents);
+ hip->cached_start = be32_to_cpu(fd->key->ext.start_block);
+ hip->cached_blocks = hfsplus_ext_block_count(hip->cached_extents);
} else {
- HFSPLUS_I(inode).cached_start = HFSPLUS_I(inode).cached_blocks = 0;
- HFSPLUS_I(inode).flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW);
+ hip->cached_start = hip->cached_blocks = 0;
+ hip->flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW);
}
return res;
}
static int hfsplus_ext_read_extent(struct inode *inode, u32 block)
{
+ struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
struct hfs_find_data fd;
int res;
- if (block >= HFSPLUS_I(inode).cached_start &&
- block < HFSPLUS_I(inode).cached_start + HFSPLUS_I(inode).cached_blocks)
+ if (block >= hip->cached_start &&
+ block < hip->cached_start + hip->cached_blocks)
return 0;
- hfs_find_init(HFSPLUS_SB(inode->i_sb).ext_tree, &fd);
+ hfs_find_init(HFSPLUS_SB(inode->i_sb)->ext_tree, &fd);
res = __hfsplus_ext_cache_extent(&fd, inode, block);
hfs_find_exit(&fd);
return res;
int hfsplus_get_block(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create)
{
- struct super_block *sb;
+ struct super_block *sb = inode->i_sb;
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
+ struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
int res = -EIO;
u32 ablock, dblock, mask;
int shift;
- sb = inode->i_sb;
-
/* Convert inode block to disk allocation block */
- shift = HFSPLUS_SB(sb).alloc_blksz_shift - sb->s_blocksize_bits;
- ablock = iblock >> HFSPLUS_SB(sb).fs_shift;
+ shift = sbi->alloc_blksz_shift - sb->s_blocksize_bits;
+ ablock = iblock >> sbi->fs_shift;
- if (iblock >= HFSPLUS_I(inode).fs_blocks) {
- if (iblock > HFSPLUS_I(inode).fs_blocks || !create)
+ if (iblock >= hip->fs_blocks) {
+ if (iblock > hip->fs_blocks || !create)
return -EIO;
- if (ablock >= HFSPLUS_I(inode).alloc_blocks) {
+ if (ablock >= hip->alloc_blocks) {
res = hfsplus_file_extend(inode);
if (res)
return res;
} else
create = 0;
- if (ablock < HFSPLUS_I(inode).first_blocks) {
- dblock = hfsplus_ext_find_block(HFSPLUS_I(inode).first_extents, ablock);
+ if (ablock < hip->first_blocks) {
+ dblock = hfsplus_ext_find_block(hip->first_extents, ablock);
goto done;
}
if (inode->i_ino == HFSPLUS_EXT_CNID)
return -EIO;
- mutex_lock(&HFSPLUS_I(inode).extents_lock);
+ mutex_lock(&hip->extents_lock);
res = hfsplus_ext_read_extent(inode, ablock);
if (!res) {
- dblock = hfsplus_ext_find_block(HFSPLUS_I(inode).cached_extents, ablock -
- HFSPLUS_I(inode).cached_start);
+ dblock = hfsplus_ext_find_block(hip->cached_extents,
+ ablock - hip->cached_start);
} else {
- mutex_unlock(&HFSPLUS_I(inode).extents_lock);
+ mutex_unlock(&hip->extents_lock);
return -EIO;
}
- mutex_unlock(&HFSPLUS_I(inode).extents_lock);
+ mutex_unlock(&hip->extents_lock);
done:
dprint(DBG_EXTENT, "get_block(%lu): %llu - %u\n", inode->i_ino, (long long)iblock, dblock);
- mask = (1 << HFSPLUS_SB(sb).fs_shift) - 1;
- map_bh(bh_result, sb, (dblock << HFSPLUS_SB(sb).fs_shift) + HFSPLUS_SB(sb).blockoffset + (iblock & mask));
+ mask = (1 << sbi->fs_shift) - 1;
+ map_bh(bh_result, sb, (dblock << sbi->fs_shift) + sbi->blockoffset + (iblock & mask));
if (create) {
set_buffer_new(bh_result);
- HFSPLUS_I(inode).phys_size += sb->s_blocksize;
- HFSPLUS_I(inode).fs_blocks++;
+ hip->phys_size += sb->s_blocksize;
+ hip->fs_blocks++;
inode_add_bytes(inode, sb->s_blocksize);
mark_inode_dirty(inode);
}
if (total_blocks == blocks)
return 0;
- hfs_find_init(HFSPLUS_SB(sb).ext_tree, &fd);
+ hfs_find_init(HFSPLUS_SB(sb)->ext_tree, &fd);
do {
res = __hfsplus_ext_read_extent(&fd, ext_entry, cnid,
total_blocks, type);
int hfsplus_file_extend(struct inode *inode)
{
struct super_block *sb = inode->i_sb;
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
+ struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
u32 start, len, goal;
int res;
- if (HFSPLUS_SB(sb).alloc_file->i_size * 8 < HFSPLUS_SB(sb).total_blocks - HFSPLUS_SB(sb).free_blocks + 8) {
+ if (sbi->alloc_file->i_size * 8 <
+ sbi->total_blocks - sbi->free_blocks + 8) {
// extend alloc file
- printk(KERN_ERR "hfs: extend alloc file! (%Lu,%u,%u)\n", HFSPLUS_SB(sb).alloc_file->i_size * 8,
- HFSPLUS_SB(sb).total_blocks, HFSPLUS_SB(sb).free_blocks);
+ printk(KERN_ERR "hfs: extend alloc file! (%Lu,%u,%u)\n",
+ sbi->alloc_file->i_size * 8,
+ sbi->total_blocks, sbi->free_blocks);
return -ENOSPC;
}
- mutex_lock(&HFSPLUS_I(inode).extents_lock);
- if (HFSPLUS_I(inode).alloc_blocks == HFSPLUS_I(inode).first_blocks)
- goal = hfsplus_ext_lastblock(HFSPLUS_I(inode).first_extents);
+ mutex_lock(&hip->extents_lock);
+ if (hip->alloc_blocks == hip->first_blocks)
+ goal = hfsplus_ext_lastblock(hip->first_extents);
else {
- res = hfsplus_ext_read_extent(inode, HFSPLUS_I(inode).alloc_blocks);
+ res = hfsplus_ext_read_extent(inode, hip->alloc_blocks);
if (res)
goto out;
- goal = hfsplus_ext_lastblock(HFSPLUS_I(inode).cached_extents);
+ goal = hfsplus_ext_lastblock(hip->cached_extents);
}
- len = HFSPLUS_I(inode).clump_blocks;
- start = hfsplus_block_allocate(sb, HFSPLUS_SB(sb).total_blocks, goal, &len);
- if (start >= HFSPLUS_SB(sb).total_blocks) {
+ len = hip->clump_blocks;
+ start = hfsplus_block_allocate(sb, sbi->total_blocks, goal, &len);
+ if (start >= sbi->total_blocks) {
start = hfsplus_block_allocate(sb, goal, 0, &len);
if (start >= goal) {
res = -ENOSPC;
}
dprint(DBG_EXTENT, "extend %lu: %u,%u\n", inode->i_ino, start, len);
- if (HFSPLUS_I(inode).alloc_blocks <= HFSPLUS_I(inode).first_blocks) {
- if (!HFSPLUS_I(inode).first_blocks) {
+
+ if (hip->alloc_blocks <= hip->first_blocks) {
+ if (!hip->first_blocks) {
dprint(DBG_EXTENT, "first extents\n");
/* no extents yet */
- HFSPLUS_I(inode).first_extents[0].start_block = cpu_to_be32(start);
- HFSPLUS_I(inode).first_extents[0].block_count = cpu_to_be32(len);
+ hip->first_extents[0].start_block = cpu_to_be32(start);
+ hip->first_extents[0].block_count = cpu_to_be32(len);
res = 0;
} else {
/* try to append to extents in inode */
- res = hfsplus_add_extent(HFSPLUS_I(inode).first_extents,
- HFSPLUS_I(inode).alloc_blocks,
+ res = hfsplus_add_extent(hip->first_extents,
+ hip->alloc_blocks,
start, len);
if (res == -ENOSPC)
goto insert_extent;
}
if (!res) {
- hfsplus_dump_extent(HFSPLUS_I(inode).first_extents);
- HFSPLUS_I(inode).first_blocks += len;
+ hfsplus_dump_extent(hip->first_extents);
+ hip->first_blocks += len;
}
} else {
- res = hfsplus_add_extent(HFSPLUS_I(inode).cached_extents,
- HFSPLUS_I(inode).alloc_blocks -
- HFSPLUS_I(inode).cached_start,
+ res = hfsplus_add_extent(hip->cached_extents,
+ hip->alloc_blocks - hip->cached_start,
start, len);
if (!res) {
- hfsplus_dump_extent(HFSPLUS_I(inode).cached_extents);
- HFSPLUS_I(inode).flags |= HFSPLUS_FLG_EXT_DIRTY;
- HFSPLUS_I(inode).cached_blocks += len;
+ hfsplus_dump_extent(hip->cached_extents);
+ hip->flags |= HFSPLUS_FLG_EXT_DIRTY;
+ hip->cached_blocks += len;
} else if (res == -ENOSPC)
goto insert_extent;
}
out:
- mutex_unlock(&HFSPLUS_I(inode).extents_lock);
+ mutex_unlock(&hip->extents_lock);
if (!res) {
- HFSPLUS_I(inode).alloc_blocks += len;
+ hip->alloc_blocks += len;
mark_inode_dirty(inode);
}
return res;
insert_extent:
dprint(DBG_EXTENT, "insert new extent\n");
- hfsplus_ext_write_extent(inode);
+ hfsplus_ext_write_extent_locked(inode);
- memset(HFSPLUS_I(inode).cached_extents, 0, sizeof(hfsplus_extent_rec));
- HFSPLUS_I(inode).cached_extents[0].start_block = cpu_to_be32(start);
- HFSPLUS_I(inode).cached_extents[0].block_count = cpu_to_be32(len);
- hfsplus_dump_extent(HFSPLUS_I(inode).cached_extents);
- HFSPLUS_I(inode).flags |= HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW;
- HFSPLUS_I(inode).cached_start = HFSPLUS_I(inode).alloc_blocks;
- HFSPLUS_I(inode).cached_blocks = len;
+ memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
+ hip->cached_extents[0].start_block = cpu_to_be32(start);
+ hip->cached_extents[0].block_count = cpu_to_be32(len);
+ hfsplus_dump_extent(hip->cached_extents);
+ hip->flags |= HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW;
+ hip->cached_start = hip->alloc_blocks;
+ hip->cached_blocks = len;
res = 0;
goto out;
void hfsplus_file_truncate(struct inode *inode)
{
struct super_block *sb = inode->i_sb;
+ struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
struct hfs_find_data fd;
u32 alloc_cnt, blk_cnt, start;
int res;
- dprint(DBG_INODE, "truncate: %lu, %Lu -> %Lu\n", inode->i_ino,
- (long long)HFSPLUS_I(inode).phys_size, inode->i_size);
- if (inode->i_size > HFSPLUS_I(inode).phys_size) {
+ dprint(DBG_INODE, "truncate: %lu, %Lu -> %Lu\n",
+ inode->i_ino, (long long)hip->phys_size, inode->i_size);
+
+ if (inode->i_size > hip->phys_size) {
struct address_space *mapping = inode->i_mapping;
struct page *page;
void *fsdata;
return;
mark_inode_dirty(inode);
return;
- } else if (inode->i_size == HFSPLUS_I(inode).phys_size)
+ } else if (inode->i_size == hip->phys_size)
return;
- blk_cnt = (inode->i_size + HFSPLUS_SB(sb).alloc_blksz - 1) >> HFSPLUS_SB(sb).alloc_blksz_shift;
- alloc_cnt = HFSPLUS_I(inode).alloc_blocks;
+ blk_cnt = (inode->i_size + HFSPLUS_SB(sb)->alloc_blksz - 1) >>
+ HFSPLUS_SB(sb)->alloc_blksz_shift;
+ alloc_cnt = hip->alloc_blocks;
if (blk_cnt == alloc_cnt)
goto out;
- mutex_lock(&HFSPLUS_I(inode).extents_lock);
- hfs_find_init(HFSPLUS_SB(sb).ext_tree, &fd);
+ mutex_lock(&hip->extents_lock);
+ hfs_find_init(HFSPLUS_SB(sb)->ext_tree, &fd);
while (1) {
- if (alloc_cnt == HFSPLUS_I(inode).first_blocks) {
- hfsplus_free_extents(sb, HFSPLUS_I(inode).first_extents,
+ if (alloc_cnt == hip->first_blocks) {
+ hfsplus_free_extents(sb, hip->first_extents,
alloc_cnt, alloc_cnt - blk_cnt);
- hfsplus_dump_extent(HFSPLUS_I(inode).first_extents);
- HFSPLUS_I(inode).first_blocks = blk_cnt;
+ hfsplus_dump_extent(hip->first_extents);
+ hip->first_blocks = blk_cnt;
break;
}
res = __hfsplus_ext_cache_extent(&fd, inode, alloc_cnt);
if (res)
break;
- start = HFSPLUS_I(inode).cached_start;
- hfsplus_free_extents(sb, HFSPLUS_I(inode).cached_extents,
+ start = hip->cached_start;
+ hfsplus_free_extents(sb, hip->cached_extents,
alloc_cnt - start, alloc_cnt - blk_cnt);
- hfsplus_dump_extent(HFSPLUS_I(inode).cached_extents);
+ hfsplus_dump_extent(hip->cached_extents);
if (blk_cnt > start) {
- HFSPLUS_I(inode).flags |= HFSPLUS_FLG_EXT_DIRTY;
+ hip->flags |= HFSPLUS_FLG_EXT_DIRTY;
break;
}
alloc_cnt = start;
- HFSPLUS_I(inode).cached_start = HFSPLUS_I(inode).cached_blocks = 0;
- HFSPLUS_I(inode).flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW);
+ hip->cached_start = hip->cached_blocks = 0;
+ hip->flags &= ~(HFSPLUS_FLG_EXT_DIRTY | HFSPLUS_FLG_EXT_NEW);
hfs_brec_remove(&fd);
}
hfs_find_exit(&fd);
- mutex_unlock(&HFSPLUS_I(inode).extents_lock);
+ mutex_unlock(&hip->extents_lock);
- HFSPLUS_I(inode).alloc_blocks = blk_cnt;
+ hip->alloc_blocks = blk_cnt;
out:
- HFSPLUS_I(inode).phys_size = inode->i_size;
- HFSPLUS_I(inode).fs_blocks = (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
- inode_set_bytes(inode, HFSPLUS_I(inode).fs_blocks << sb->s_blocksize_bits);
+ hip->phys_size = inode->i_size;
+ hip->fs_blocks = (inode->i_size + sb->s_blocksize - 1) >> sb->s_blocksize_bits;
+ inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits);
mark_inode_dirty(inode);
}
projects / mv-sheeva.git / blobdiff