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Diffstat (limited to 'fs/hfsplus/bitmap.c')
-rw-r--r--fs/hfsplus/bitmap.c23
1 files changed, 13 insertions, 10 deletions
diff --git a/fs/hfsplus/bitmap.c b/fs/hfsplus/bitmap.c
index ea30afc..1cad80c 100644
--- a/fs/hfsplus/bitmap.c
+++ b/fs/hfsplus/bitmap.c
@@ -15,8 +15,10 @@
#define PAGE_CACHE_BITS (PAGE_CACHE_SIZE * 8)
-int hfsplus_block_allocate(struct super_block *sb, u32 size, u32 offset, u32 *max)
+int hfsplus_block_allocate(struct super_block *sb, u32 size,
+ u32 offset, u32 *max)
{
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
struct page *page;
struct address_space *mapping;
__be32 *pptr, *curr, *end;
@@ -29,8 +31,8 @@ int hfsplus_block_allocate(struct super_block *sb, u32 size, u32 offset, u32 *ma
return size;
dprint(DBG_BITMAP, "block_allocate: %u,%u,%u\n", size, offset, len);
- mutex_lock(&HFSPLUS_SB(sb).alloc_file->i_mutex);
- mapping = HFSPLUS_SB(sb).alloc_file->i_mapping;
+ mutex_lock(&sbi->alloc_mutex);
+ mapping = sbi->alloc_file->i_mapping;
page = read_mapping_page(mapping, offset / PAGE_CACHE_BITS, NULL);
if (IS_ERR(page)) {
start = size;
@@ -150,16 +152,17 @@ done:
set_page_dirty(page);
kunmap(page);
*max = offset + (curr - pptr) * 32 + i - start;
- HFSPLUS_SB(sb).free_blocks -= *max;
+ sbi->free_blocks -= *max;
sb->s_dirt = 1;
dprint(DBG_BITMAP, "-> %u,%u\n", start, *max);
out:
- mutex_unlock(&HFSPLUS_SB(sb).alloc_file->i_mutex);
+ mutex_unlock(&sbi->alloc_mutex);
return start;
}
int hfsplus_block_free(struct super_block *sb, u32 offset, u32 count)
{
+ struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
struct page *page;
struct address_space *mapping;
__be32 *pptr, *curr, *end;
@@ -172,11 +175,11 @@ int hfsplus_block_free(struct super_block *sb, u32 offset, u32 count)
dprint(DBG_BITMAP, "block_free: %u,%u\n", offset, count);
/* are all of the bits in range? */
- if ((offset + count) > HFSPLUS_SB(sb).total_blocks)
+ if ((offset + count) > sbi->total_blocks)
return -2;
- mutex_lock(&HFSPLUS_SB(sb).alloc_file->i_mutex);
- mapping = HFSPLUS_SB(sb).alloc_file->i_mapping;
+ mutex_lock(&sbi->alloc_mutex);
+ mapping = sbi->alloc_file->i_mapping;
pnr = offset / PAGE_CACHE_BITS;
page = read_mapping_page(mapping, pnr, NULL);
pptr = kmap(page);
@@ -224,9 +227,9 @@ done:
out:
set_page_dirty(page);
kunmap(page);
- HFSPLUS_SB(sb).free_blocks += len;
+ sbi->free_blocks += len;
sb->s_dirt = 1;
- mutex_unlock(&HFSPLUS_SB(sb).alloc_file->i_mutex);
+ mutex_unlock(&sbi->alloc_mutex);
return 0;
}