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udf: move calculating of nr_groups into helper function

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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 04:20:34 -08:00
committed by Linus Torvalds
parent 66e1da3f47
commit 883cb9d184
3 changed files with 13 additions and 9 deletions
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16
fs/udf/super.c
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@@ -937,18 +937,22 @@ static void udf_load_fileset(struct super_block *sb, struct buffer_head *bh,
root->logicalBlockNum, root->partitionReferenceNum);
}
int udf_compute_nr_groups(struct super_block *sb, u32 partition)
{
struct udf_part_map *map = &UDF_SB(sb)->s_partmaps[partition];
return (map->s_partition_len +
(sizeof(struct spaceBitmapDesc) << 3) +
(sb->s_blocksize * 8) - 1) /
(sb->s_blocksize * 8);
}
static struct udf_bitmap *udf_sb_alloc_bitmap(struct super_block *sb, u32 index)
{
struct udf_part_map *map = &UDF_SB(sb)->s_partmaps[index];
struct udf_bitmap *bitmap;
int nr_groups;
int size;
/* TODO: move calculating of nr_groups into helper function */
nr_groups = (map->s_partition_len +
(sizeof(struct spaceBitmapDesc) << 3) +
(sb->s_blocksize * 8) - 1) /
(sb->s_blocksize * 8);
nr_groups = udf_compute_nr_groups(sb, index);
size = sizeof(struct udf_bitmap) +
(sizeof(struct buffer_head *) * nr_groups);