reiserfs: fix usage of signed ints for block numbers
Do a quick signedness check for block numbers. There are a number of places
where signed integers are used for block numbers, which limits the usable file
system size to 8 TiB. The disk format, excepting a problem which will be
fixed in the following patch, supports file systems up to 16 TiB in size.
This patch cleans up those sites so that we can enable the full usable size.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/reiserfs/bitmap.c b/fs/reiserfs/bitmap.c
index 28a1b06..f727517 100644
--- a/fs/reiserfs/bitmap.c
+++ b/fs/reiserfs/bitmap.c
@@ -47,7 +47,9 @@
test_bit(_ALLOC_ ## optname , &SB_ALLOC_OPTS(s))
static inline void get_bit_address(struct super_block *s,
- b_blocknr_t block, int *bmap_nr, int *offset)
+ b_blocknr_t block,
+ unsigned int *bmap_nr,
+ unsigned int *offset)
{
/* It is in the bitmap block number equal to the block
* number divided by the number of bits in a block. */
@@ -58,7 +60,7 @@
int is_reusable(struct super_block *s, b_blocknr_t block, int bit_value)
{
- int bmap, offset;
+ unsigned int bmap, offset;
if (block == 0 || block >= SB_BLOCK_COUNT(s)) {
reiserfs_warning(s,
@@ -108,8 +110,8 @@
/* searches in journal structures for a given block number (bmap, off). If block
is found in reiserfs journal it suggests next free block candidate to test. */
-static inline int is_block_in_journal(struct super_block *s, int bmap, int
- off, int *next)
+static inline int is_block_in_journal(struct super_block *s, unsigned int bmap,
+ int off, int *next)
{
b_blocknr_t tmp;
@@ -130,8 +132,8 @@
/* it searches for a window of zero bits with given minimum and maximum lengths in one bitmap
* block; */
static int scan_bitmap_block(struct reiserfs_transaction_handle *th,
- int bmap_n, int *beg, int boundary, int min,
- int max, int unfm)
+ unsigned int bmap_n, int *beg, int boundary,
+ int min, int max, int unfm)
{
struct super_block *s = th->t_super;
struct reiserfs_bitmap_info *bi = &SB_AP_BITMAP(s)[bmap_n];
@@ -307,16 +309,16 @@
* bitmap and place new blocks there. Returns number of allocated blocks. */
static int scan_bitmap(struct reiserfs_transaction_handle *th,
b_blocknr_t * start, b_blocknr_t finish,
- int min, int max, int unfm, unsigned long file_block)
+ int min, int max, int unfm, sector_t file_block)
{
int nr_allocated = 0;
struct super_block *s = th->t_super;
/* find every bm and bmap and bmap_nr in this file, and change them all to bitmap_blocknr
* - Hans, it is not a block number - Zam. */
- int bm, off;
- int end_bm, end_off;
- int off_max = s->s_blocksize << 3;
+ unsigned int bm, off;
+ unsigned int end_bm, end_off;
+ unsigned int off_max = s->s_blocksize << 3;
BUG_ON(!th->t_trans_id);
@@ -383,7 +385,7 @@
struct reiserfs_super_block *rs;
struct buffer_head *sbh, *bmbh;
struct reiserfs_bitmap_info *apbi;
- int nr, offset;
+ unsigned int nr, offset;
BUG_ON(!th->t_trans_id);
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index 0804289..a991af9 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -199,7 +199,7 @@
// files which were created in the earlier version can not be longer,
// than 2 gb
//
-static int file_capable(struct inode *inode, long block)
+static int file_capable(struct inode *inode, sector_t block)
{
if (get_inode_item_key_version(inode) != KEY_FORMAT_3_5 || // it is new file.
block < (1 << (31 - inode->i_sb->s_blocksize_bits))) // old file, but 'block' is inside of 2gb
@@ -242,7 +242,7 @@
// Please improve the english/clarity in the comment above, as it is
// hard to understand.
-static int _get_block_create_0(struct inode *inode, long block,
+static int _get_block_create_0(struct inode *inode, sector_t block,
struct buffer_head *bh_result, int args)
{
INITIALIZE_PATH(path);
@@ -250,7 +250,7 @@
struct buffer_head *bh;
struct item_head *ih, tmp_ih;
int fs_gen;
- int blocknr;
+ b_blocknr_t blocknr;
char *p = NULL;
int chars;
int ret;
@@ -569,7 +569,7 @@
}
static inline int _allocate_block(struct reiserfs_transaction_handle *th,
- long block,
+ sector_t block,
struct inode *inode,
b_blocknr_t * allocated_block_nr,
struct treepath *path, int flags)
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index 4cad9e7..0e30ba0 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -219,11 +219,12 @@
}
}
-static int set_bit_in_list_bitmap(struct super_block *p_s_sb, int block,
+static int set_bit_in_list_bitmap(struct super_block *p_s_sb,
+ b_blocknr_t block,
struct reiserfs_list_bitmap *jb)
{
- int bmap_nr = block / (p_s_sb->s_blocksize << 3);
- int bit_nr = block % (p_s_sb->s_blocksize << 3);
+ unsigned int bmap_nr = block / (p_s_sb->s_blocksize << 3);
+ unsigned int bit_nr = block % (p_s_sb->s_blocksize << 3);
if (!jb->bitmaps[bmap_nr]) {
jb->bitmaps[bmap_nr] = get_bitmap_node(p_s_sb);
@@ -289,7 +290,7 @@
*/
int reiserfs_allocate_list_bitmaps(struct super_block *p_s_sb,
struct reiserfs_list_bitmap *jb_array,
- int bmap_nr)
+ unsigned int bmap_nr)
{
int i;
int failed = 0;
@@ -483,7 +484,7 @@
**
*/
int reiserfs_in_journal(struct super_block *p_s_sb,
- int bmap_nr, int bit_nr, int search_all,
+ unsigned int bmap_nr, int bit_nr, int search_all,
b_blocknr_t * next_zero_bit)
{
struct reiserfs_journal *journal = SB_JOURNAL(p_s_sb);
@@ -1013,7 +1014,7 @@
struct reiserfs_journal_list *jl, int flushall)
{
int i;
- int bn;
+ b_blocknr_t bn;
struct buffer_head *tbh = NULL;
unsigned long trans_id = jl->j_trans_id;
struct reiserfs_journal *journal = SB_JOURNAL(s);
@@ -2307,8 +2308,9 @@
Right now it is only used from journal code. But later we might use it
from other places.
Note: Do not use journal_getblk/sb_getblk functions here! */
-static struct buffer_head *reiserfs_breada(struct block_device *dev, int block,
- int bufsize, unsigned int max_block)
+static struct buffer_head *reiserfs_breada(struct block_device *dev,
+ b_blocknr_t block, int bufsize,
+ b_blocknr_t max_block)
{
struct buffer_head *bhlist[BUFNR];
unsigned int blocks = BUFNR;
diff --git a/fs/reiserfs/stree.c b/fs/reiserfs/stree.c
index 981027d..ca41567 100644
--- a/fs/reiserfs/stree.c
+++ b/fs/reiserfs/stree.c
@@ -559,7 +559,7 @@
/* The function is NOT SCHEDULE-SAFE! */
static void search_by_key_reada(struct super_block *s,
struct buffer_head **bh,
- unsigned long *b, int num)
+ b_blocknr_t *b, int num)
{
int i, j;
@@ -611,7 +611,7 @@
DISK_LEAF_NODE_LEVEL */
)
{
- int n_block_number;
+ b_blocknr_t n_block_number;
int expected_level;
struct buffer_head *p_s_bh;
struct path_element *p_s_last_element;
@@ -619,7 +619,7 @@
int right_neighbor_of_leaf_node;
int fs_gen;
struct buffer_head *reada_bh[SEARCH_BY_KEY_READA];
- unsigned long reada_blocks[SEARCH_BY_KEY_READA];
+ b_blocknr_t reada_blocks[SEARCH_BY_KEY_READA];
int reada_count = 0;
#ifdef CONFIG_REISERFS_CHECK
diff --git a/include/linux/reiserfs_fs.h b/include/linux/reiserfs_fs.h
index 8dcf237..69a3e12 100644
--- a/include/linux/reiserfs_fs.h
+++ b/include/linux/reiserfs_fs.h
@@ -1734,8 +1734,8 @@
int journal_mark_freed(struct reiserfs_transaction_handle *,
struct super_block *, b_blocknr_t blocknr);
int journal_transaction_should_end(struct reiserfs_transaction_handle *, int);
-int reiserfs_in_journal(struct super_block *p_s_sb, int bmap_nr, int bit_nr,
- int searchall, b_blocknr_t * next);
+int reiserfs_in_journal(struct super_block *p_s_sb, unsigned int bmap_nr,
+ int bit_nr, int searchall, b_blocknr_t *next);
int journal_begin(struct reiserfs_transaction_handle *,
struct super_block *p_s_sb, unsigned long);
int journal_join_abort(struct reiserfs_transaction_handle *,
@@ -1743,7 +1743,7 @@
void reiserfs_journal_abort(struct super_block *sb, int errno);
void reiserfs_abort(struct super_block *sb, int errno, const char *fmt, ...);
int reiserfs_allocate_list_bitmaps(struct super_block *s,
- struct reiserfs_list_bitmap *, int);
+ struct reiserfs_list_bitmap *, unsigned int);
void add_save_link(struct reiserfs_transaction_handle *th,
struct inode *inode, int truncate);
@@ -2041,7 +2041,7 @@
* arguments, such as node, search path, transaction_handle, etc. */
struct __reiserfs_blocknr_hint {
struct inode *inode; /* inode passed to allocator, if we allocate unf. nodes */
- long block; /* file offset, in blocks */
+ sector_t block; /* file offset, in blocks */
struct in_core_key key;
struct treepath *path; /* search path, used by allocator to deternine search_start by
* various ways */
@@ -2099,7 +2099,8 @@
static inline int reiserfs_new_unf_blocknrs(struct reiserfs_transaction_handle
*th, struct inode *inode,
b_blocknr_t * new_blocknrs,
- struct treepath *path, long block)
+ struct treepath *path,
+ sector_t block)
{
reiserfs_blocknr_hint_t hint = {
.th = th,
@@ -2116,7 +2117,8 @@
static inline int reiserfs_new_unf_blocknrs2(struct reiserfs_transaction_handle
*th, struct inode *inode,
b_blocknr_t * new_blocknrs,
- struct treepath *path, long block)
+ struct treepath *path,
+ sector_t block)
{
reiserfs_blocknr_hint_t hint = {
.th = th,