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ext3: use ext3_get_group_desc()

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Use ext3_get_group_desc()

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Akinobu Mita 2008-04-28 02:16:08 -07:00 committed by Linus Torvalds
parent 22a5daf537
commit e0e369a7dd
1 changed files with 5 additions and 18 deletions
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23
fs/ext3/inode.c
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@ -2454,11 +2454,10 @@ void ext3_truncate(struct inode *inode)
static ext3_fsblk_t ext3_get_inode_block(struct super_block *sb, static ext3_fsblk_t ext3_get_inode_block(struct super_block *sb,
unsigned long ino, struct ext3_iloc *iloc) unsigned long ino, struct ext3_iloc *iloc)
{ {
unsigned long desc, group_desc, block_group; unsigned long block_group;
unsigned long offset; unsigned long offset;
ext3_fsblk_t block; ext3_fsblk_t block;
struct buffer_head *bh; struct ext3_group_desc *gdp;
struct ext3_group_desc * gdp;
if (!ext3_valid_inum(sb, ino)) { if (!ext3_valid_inum(sb, ino)) {
/* /*
@ -2470,27 +2469,15 @@ static ext3_fsblk_t ext3_get_inode_block(struct super_block *sb,
} }
block_group = (ino - 1) / EXT3_INODES_PER_GROUP(sb); block_group = (ino - 1) / EXT3_INODES_PER_GROUP(sb);
if (block_group >= EXT3_SB(sb)->s_groups_count) { gdp = ext3_get_group_desc(sb, block_group, NULL);
ext3_error(sb,"ext3_get_inode_block","group >= groups count"); if (!gdp)
return 0; return 0;
}
smp_rmb();
group_desc = block_group >> EXT3_DESC_PER_BLOCK_BITS(sb);
desc = block_group & (EXT3_DESC_PER_BLOCK(sb) - 1);
bh = EXT3_SB(sb)->s_group_desc[group_desc];
if (!bh) {
ext3_error (sb, "ext3_get_inode_block",
"Descriptor not loaded");
return 0;
}
gdp = (struct ext3_group_desc *)bh->b_data;
/* /*
* Figure out the offset within the block group inode table * Figure out the offset within the block group inode table
*/ */
offset = ((ino - 1) % EXT3_INODES_PER_GROUP(sb)) * offset = ((ino - 1) % EXT3_INODES_PER_GROUP(sb)) *
EXT3_INODE_SIZE(sb); EXT3_INODE_SIZE(sb);
block = le32_to_cpu(gdp[desc].bg_inode_table) + block = le32_to_cpu(gdp->bg_inode_table) +
(offset >> EXT3_BLOCK_SIZE_BITS(sb)); (offset >> EXT3_BLOCK_SIZE_BITS(sb));
iloc->block_group = block_group; iloc->block_group = block_group;