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udf: convert UDF_SB_ALLOC_PARTMAPS macro to udf_sb_alloc_partition_maps function

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- convert UDF_SB_ALLOC_PARTMAPS macro to udf_sb_alloc_partition_maps function
- convert kmalloc + memset to kcalloc
- check if kcalloc failed (partially)

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: Ben Fennema <bfennema@falcon.csc.calpoly.edu>
Cc: Jan Kara <jack@suse.cz>
Acked-by: 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 04:20:32 -08:00 committed by Linus Torvalds
parent 6c79e987d6
commit dc5d39be6d
2 changed files with 23 additions and 15 deletions
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25
fs/udf/super.c
View File

@ -52,6 +52,7 @@
#include <linux/buffer_head.h>
#include <linux/vfs.h>
#include <linux/vmalloc.h>
#include <linux/errno.h>
#include <asm/byteorder.h>
#include <linux/udf_fs.h>
@ -226,6 +227,24 @@ static void __exit exit_udf_fs(void)
module_init(init_udf_fs)
module_exit(exit_udf_fs)
static int udf_sb_alloc_partition_maps(struct super_block *sb, u32 count)
{
struct udf_sb_info *sbi = UDF_SB(sb);
sbi->s_partmaps = kcalloc(count, sizeof(struct udf_part_map),
GFP_KERNEL);
if (!sbi->s_partmaps) {
udf_error(sb, __FUNCTION__,
"Unable to allocate space for %d partition maps",
count);
sbi->s_partitions = 0;
return -ENOMEM;
}
sbi->s_partitions = count;
return 0;
}
/*
* udf_parse_options
*
@ -1037,7 +1056,9 @@ static int udf_load_logicalvol(struct super_block *sb, struct buffer_head *bh,
lvd = (struct logicalVolDesc *)bh->b_data;
UDF_SB_ALLOC_PARTMAPS(sb, le32_to_cpu(lvd->numPartitionMaps));
i = udf_sb_alloc_partition_maps(sb, le32_to_cpu(lvd->numPartitionMaps));
if (i != 0)
return i;
for (i = 0, offset = 0;
i < sbi->s_partitions && offset < le32_to_cpu(lvd->mapTableLength);
@ -1242,7 +1263,7 @@ static int udf_process_sequence(struct super_block *sb, long block,
if (i == VDS_POS_PRIMARY_VOL_DESC) {
udf_load_pvoldesc(sb, bh);
} else if (i == VDS_POS_LOGICAL_VOL_DESC) {
udf_load_logicalvol(sb, bh, fileset);
udf_load_logicalvol(sb, bh, fileset); /* TODO: check return value */
} else if (i == VDS_POS_PARTITION_DESC) {
struct buffer_head *bh2 = NULL;
if (udf_load_partdesc(sb, bh)) {

13
fs/udf/udf_sb.h
View File

@ -43,19 +43,6 @@ 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_PARTMAPS(X,Y)\
{\
struct udf_sb_info *sbi = UDF_SB(X);\
sbi->s_partmaps = kmalloc(sizeof(struct udf_part_map) * Y, GFP_KERNEL);\
if (sbi->s_partmaps != NULL) {\
sbi->s_partitions = Y;\
memset(sbi->s_partmaps, 0x00, sizeof(struct udf_part_map) * Y);\
} else {\
sbi->s_partitions = 0;\
udf_error(X, __FUNCTION__, "Unable to allocate space for %d partition maps", Y);\
}\
}
#define UDF_SB_ALLOC_BITMAP(X,Y,Z)\
{\
struct udf_sb_info *sbi = UDF_SB(X);\