Messages in this thread Patch in this message | | | Subject | [PATCH 22/24] udf: convert UDF_SB_ALLOC_BITMAP macro to udf_sb_alloc_bitmap function | Date | Sun, 23 Dec 2007 02:51:12 +0100 | From | marcin.slusarz@gmail ... |
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Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> CC: Ben Fennema <bfennema@falcon.csc.calpoly.edu> CC: Jan Kara <jack@suse.cz> --- fs/udf/super.c | 4 ++-- fs/udf/udf_sb.h | 37 ++++++++++++++++++++----------------- 2 files changed, 22 insertions(+), 19 deletions(-)
diff --git a/fs/udf/super.c b/fs/udf/super.c index 33ccf66..1afea58 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -949,7 +949,7 @@ static int udf_load_partdesc(struct super_block *sb, struct buffer_head *bh) i, map->s_uspace.s_table->i_ino); } if (phd->unallocSpaceBitmap.extLength) { - UDF_SB_ALLOC_BITMAP(sb, i, s_uspace); + map->s_uspace.s_bitmap = udf_sb_alloc_bitmap(sb, i); if (map->s_uspace.s_bitmap != NULL) { map->s_uspace.s_bitmap->s_extLength = le32_to_cpu(phd->unallocSpaceBitmap.extLength); @@ -979,7 +979,7 @@ static int udf_load_partdesc(struct super_block *sb, struct buffer_head *bh) i, map->s_fspace.s_table->i_ino); } if (phd->freedSpaceBitmap.extLength) { - UDF_SB_ALLOC_BITMAP(sb, i, s_fspace); + map->s_fspace.s_bitmap = udf_sb_alloc_bitmap(sb, i); if (map->s_fspace.s_bitmap != NULL) { map->s_fspace.s_bitmap->s_extLength = le32_to_cpu(phd->freedSpaceBitmap.extLength); diff --git a/fs/udf/udf_sb.h b/fs/udf/udf_sb.h index a5805c5..4cf91f2 100644 --- a/fs/udf/udf_sb.h +++ b/fs/udf/udf_sb.h @@ -2,6 +2,7 @@ #define __LINUX_UDF_SB_H #include <linux/errno.h> +#include <linux/vmalloc.h> /* Since UDF 2.01 is ISO 13346 based... */ #define UDF_SUPER_MAGIC 0x15013346 @@ -149,23 +150,25 @@ static inline void udf_update_revision(struct super_block *sb, __u16 revision) udf_sb(sb)->s_udfrev = revision; } -#define UDF_SB_ALLOC_BITMAP(X,Y,Z)\ -{\ - int nr_groups = ((udf_sb_partmap((X),(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)\ - udf_sb_partmaps(X)[(Y)].Z.s_bitmap = kmalloc(size, GFP_KERNEL);\ - else\ - udf_sb_partmaps(X)[(Y)].Z.s_bitmap = vmalloc(size);\ - if (udf_sb_partmaps(X)[(Y)].Z.s_bitmap != NULL) {\ - memset(udf_sb_partmaps(X)[(Y)].Z.s_bitmap, 0x00, size);\ - udf_sb_partmaps(X)[(Y)].Z.s_bitmap->s_block_bitmap =\ - (struct buffer_head **)(udf_sb_partmaps(X)[(Y)].Z.s_bitmap + 1);\ - udf_sb_partmaps(X)[(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);\ - }\ +static inline struct udf_bitmap *udf_sb_alloc_bitmap(struct super_block *sb, __u32 index) +{ + struct udf_part_map *map = udf_sb_partmap(sb, index); + int nr_groups = (map->s_partition_len + (sizeof(struct spaceBitmapDesc) << 3) + + (sb->s_blocksize * 8) - 1) / (sb->s_blocksize * 8); + int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) * nr_groups); + struct udf_bitmap *bitmap; + + if (size <= PAGE_SIZE) + bitmap = kmalloc(size, GFP_KERNEL); + else + bitmap = vmalloc(size); + if (bitmap != NULL) { + memset(bitmap, 0x00, size); + bitmap->s_block_bitmap = (struct buffer_head **)(bitmap + 1); + bitmap->s_nr_groups = nr_groups; + } else + udf_error(sb, __FUNCTION__, "Unable to allocate space for bitmap and %d buffer_head pointers", nr_groups); + return bitmap; } #define UDF_SB_FREE_BITMAP(X,Y,Z)\ -- 1.5.3.4
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