Messages in this thread | | | Date | Mon, 7 Jan 2008 12:35:24 +0100 | From | Jan Kara <> | Subject | Re: [PATCH 22/24] udf: convert UDF_SB_ALLOC_BITMAP macro to udf_sb_alloc_bitmap function |
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On Sun 23-12-07 02:51:12, marcin.slusarz@gmail.com wrote: > Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> > CC: Ben Fennema <bfennema@falcon.csc.calpoly.edu> > CC: Jan Kara <jack@suse.cz> Looks much better :). Acked-by: Jan Kara <jack@suse.cz>
Honza
> --- > 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 > -- Jan Kara <jack@suse.cz> SUSE Labs, CR
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