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udf: convert macros related to bitmaps to functions

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convert UDF_SB_ALLOC_BITMAP macro to udf_sb_alloc_bitmap function
convert UDF_SB_FREE_BITMAP macro to udf_sb_free_bitmap function

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: Ben Fennema <bfennema@falcon.csc.calpoly.edu>
Acked-by: Jan Kara <jack@suse.cz>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Marcin Slusarz
2008-02-08 04:20:33 -08:00
committed by Linus Torvalds
parent deae6cfcdc
commit 66e1da3f47
2 changed files with 55 additions and 44 deletions
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38
fs/udf/udf_sb.h
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@@ -43,46 +43,8 @@ static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi);
#define UDF_SB_ALLOC_BITMAP(X,Y,Z)\
{\
struct udf_sb_info *sbi = UDF_SB(X);\
int nr_groups = ((sbi->s_partmaps[(Y)].s_partition_len + (sizeof(struct spaceBitmapDesc) << 3) +\
((X)->s_blocksize * 8) - 1) / ((X)->s_blocksize * 8));\
int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) * nr_groups);\
if (size <= PAGE_SIZE)\
sbi->s_partmaps[(Y)].Z.s_bitmap = kmalloc(size, GFP_KERNEL);\
else\
sbi->s_partmaps[(Y)].Z.s_bitmap = vmalloc(size);\
if (sbi->s_partmaps[(Y)].Z.s_bitmap != NULL) {\
memset(sbi->s_partmaps[(Y)].Z.s_bitmap, 0x00, size);\
sbi->s_partmaps[(Y)].Z.s_bitmap->s_block_bitmap =\
(struct buffer_head **)(sbi->s_partmaps[(Y)].Z.s_bitmap + 1);\
sbi->s_partmaps[(Y)].Z.s_bitmap->s_nr_groups = nr_groups;\
} else {\
udf_error(X, __FUNCTION__, "Unable to allocate space for bitmap and %d buffer_head pointers", nr_groups);\
}\
}
#define UDF_SB_FREE_BITMAP(X,Y,Z)\
{\
int i;\
int nr_groups = UDF_SB_BITMAP_NR_GROUPS(X,Y,Z);\
int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) * nr_groups);\
for (i = 0; i < nr_groups; i++) {\
if (UDF_SB_BITMAP(X,Y,Z,i))\
brelse(UDF_SB_BITMAP(X,Y,Z,i));\
}\
if (size <= PAGE_SIZE)\
kfree(UDF_SB(X)->s_partmaps[Y].Z.s_bitmap);\
else\
vfree(UDF_SB(X)->s_partmaps[Y].Z.s_bitmap);\
}
#define UDF_QUERY_FLAG(X,Y) ( UDF_SB(X)->s_flags & ( 1 << (Y) ) )
#define UDF_SET_FLAG(X,Y) ( UDF_SB(X)->s_flags |= ( 1 << (Y) ) )
#define UDF_CLEAR_FLAG(X,Y) ( UDF_SB(X)->s_flags &= ~( 1 << (Y) ) )
#define UDF_SB_BITMAP(X,Y,Z,I) ( UDF_SB(X)->s_partmaps[(Y)].Z.s_bitmap->s_block_bitmap[I] )
#define UDF_SB_BITMAP_NR_GROUPS(X,Y,Z) ( UDF_SB(X)->s_partmaps[(Y)].Z.s_bitmap->s_nr_groups )
#endif /* __LINUX_UDF_SB_H */