ufs: untangle ubh_...block...(), part 2

pass cylinder group descriptor instead of its buffer head (ubh,
always UCPI_UBH(ucpi)) and its ->c_freeoff.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

Author: Al Viro

fs/ufs/balloc.c

@@ -95,7 +95,7 @@ void ufs_free_fragments(struct inode *inode, u64 fragment, unsigned count)
 	 * Trying to reassemble free fragments into block
 	 */
 	blkno = ufs_fragstoblks (bbase);
-	if (ubh_isblockset(uspi, UCPI_UBH(ucpi), ucpi->c_freeoff, blkno)) {
+	if (ubh_isblockset(uspi, ucpi, blkno)) {
 		fs32_sub(sb, &ucg->cg_cs.cs_nffree, uspi->s_fpb);
 		uspi->cs_total.cs_nffree -= uspi->s_fpb;
 		fs32_sub(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nffree, uspi->s_fpb);
@@ -182,10 +182,10 @@ void ufs_free_blocks(struct inode *inode, u64 fragment, unsigned count)
 
 	for (i = bit; i < end_bit; i += uspi->s_fpb) {
 		blkno = ufs_fragstoblks(i);
-		if (ubh_isblockset(uspi, UCPI_UBH(ucpi), ucpi->c_freeoff, blkno)) {
+		if (ubh_isblockset(uspi, ucpi, blkno)) {
 			ufs_error(sb, "ufs_free_blocks", "freeing free fragment");
 		}
-		ubh_setblock(uspi, UCPI_UBH(ucpi), ucpi->c_freeoff, blkno);
+		ubh_setblock(uspi, ucpi, blkno);
 		inode_sub_bytes(inode, uspi->s_fpb << uspi->s_fshift);
 		if ((UFS_SB(sb)->s_flags & UFS_CG_MASK) == UFS_CG_44BSD)
 			ufs_clusteracct (sb, ucpi, blkno, 1);
@@ -716,7 +716,7 @@ static u64 ufs_alloccg_block(struct inode *inode,
 	/*
 	 * If the requested block is available, use it.
 	 */
-	if (ubh_isblockset(uspi, UCPI_UBH(ucpi), ucpi->c_freeoff, ufs_fragstoblks(goal))) {
+	if (ubh_isblockset(uspi, ucpi, ufs_fragstoblks(goal))) {
 		result = goal;
 		goto gotit;
 	}
@@ -730,7 +730,7 @@ static u64 ufs_alloccg_block(struct inode *inode,
 	if (!try_add_frags(inode, uspi->s_fpb))
 		return 0;
 	blkno = ufs_fragstoblks(result);
-	ubh_clrblock(uspi, UCPI_UBH(ucpi), ucpi->c_freeoff, blkno);
+	ubh_clrblock(uspi, ucpi, blkno);
 	if ((UFS_SB(sb)->s_flags & UFS_CG_MASK) == UFS_CG_44BSD)
 		ufs_clusteracct (sb, ucpi, blkno, -1);
 

fs/ufs/util.h

@@ -455,9 +455,11 @@ static inline unsigned _ubh_find_last_zero_bit_(
 	return (base << uspi->s_bpfshift) + pos - begin;
 } 	
 
-static inline int ubh_isblockset(struct ufs_sb_private_info * uspi,
-	struct ufs_buffer_head * ubh, unsigned begin, unsigned block)
+static inline int ubh_isblockset(struct ufs_sb_private_info *uspi,
+	struct ufs_cg_private_info *ucpi, unsigned block)
 {
+	struct ufs_buffer_head *ubh = UCPI_UBH(ucpi);
+	unsigned begin = ucpi->c_freeoff;
 	u8 mask;
 	switch (uspi->s_fpb) {
 	case 8:
@@ -475,9 +477,11 @@ static inline int ubh_isblockset(struct ufs_sb_private_info * uspi,
 	return 0;	
 }
 
-static inline void ubh_clrblock(struct ufs_sb_private_info * uspi,
-	struct ufs_buffer_head * ubh, unsigned begin, unsigned block)
+static inline void ubh_clrblock(struct ufs_sb_private_info *uspi,
+	struct ufs_cg_private_info *ucpi, unsigned block)
 {
+	struct ufs_buffer_head *ubh = UCPI_UBH(ucpi);
+	unsigned begin = ucpi->c_freeoff;
 	switch (uspi->s_fpb) {
 	case 8:
 	    	*ubh_get_addr (ubh, begin + block) = 0x00;
@@ -495,8 +499,10 @@ static inline void ubh_clrblock(struct ufs_sb_private_info * uspi,
 }
 
 static inline void ubh_setblock(struct ufs_sb_private_info * uspi,
-	struct ufs_buffer_head * ubh, unsigned begin, unsigned block)
+	struct ufs_cg_private_info *ucpi, unsigned block)
 {
+	struct ufs_buffer_head *ubh = UCPI_UBH(ucpi);
+	unsigned begin = ucpi->c_freeoff;
 	switch (uspi->s_fpb) {
 	case 8:
 	    	*ubh_get_addr(ubh, begin + block) = 0xff;