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-rw-r--r--fs/ext3/balloc.c48
1 files changed, 4 insertions, 44 deletions
diff --git a/fs/ext3/balloc.c b/fs/ext3/balloc.c
index 7a87d15523be..a8ba7e831278 100644
--- a/fs/ext3/balloc.c
+++ b/fs/ext3/balloc.c
@@ -80,14 +80,6 @@ struct ext3_group_desc * ext3_get_group_desc(struct super_block * sb,
80 return desc + offset; 80 return desc + offset;
81} 81}
82 82
83static inline int
84block_in_use(ext3_fsblk_t block, struct super_block *sb, unsigned char *map)
85{
86 return ext3_test_bit ((block -
87 le32_to_cpu(EXT3_SB(sb)->s_es->s_first_data_block)) %
88 EXT3_BLOCKS_PER_GROUP(sb), map);
89}
90
91/** 83/**
92 * read_block_bitmap() 84 * read_block_bitmap()
93 * @sb: super block 85 * @sb: super block
@@ -101,51 +93,20 @@ block_in_use(ext3_fsblk_t block, struct super_block *sb, unsigned char *map)
101static struct buffer_head * 93static struct buffer_head *
102read_block_bitmap(struct super_block *sb, unsigned int block_group) 94read_block_bitmap(struct super_block *sb, unsigned int block_group)
103{ 95{
104 int i;
105 struct ext3_group_desc * desc; 96 struct ext3_group_desc * desc;
106 struct buffer_head * bh = NULL; 97 struct buffer_head * bh = NULL;
107 ext3_fsblk_t bitmap_blk;
108 98
109 desc = ext3_get_group_desc (sb, block_group, NULL); 99 desc = ext3_get_group_desc (sb, block_group, NULL);
110 if (!desc) 100 if (!desc)
111 return NULL; 101 goto error_out;
112 bitmap_blk = le32_to_cpu(desc->bg_block_bitmap); 102 bh = sb_bread(sb, le32_to_cpu(desc->bg_block_bitmap));
113 bh = sb_bread(sb, bitmap_blk);
114 if (!bh) 103 if (!bh)
115 ext3_error (sb, __FUNCTION__, 104 ext3_error (sb, "read_block_bitmap",
116 "Cannot read block bitmap - " 105 "Cannot read block bitmap - "
117 "block_group = %d, block_bitmap = %u", 106 "block_group = %d, block_bitmap = %u",
118 block_group, le32_to_cpu(desc->bg_block_bitmap)); 107 block_group, le32_to_cpu(desc->bg_block_bitmap));
119
120 /* check whether block bitmap block number is set */
121 if (!block_in_use(bitmap_blk, sb, bh->b_data)) {
122 /* bad block bitmap */
123 goto error_out;
124 }
125 /* check whether the inode bitmap block number is set */
126 bitmap_blk = le32_to_cpu(desc->bg_inode_bitmap);
127 if (!block_in_use(bitmap_blk, sb, bh->b_data)) {
128 /* bad block bitmap */
129 goto error_out;
130 }
131 /* check whether the inode table block number is set */
132 bitmap_blk = le32_to_cpu(desc->bg_inode_table);
133 for (i = 0; i < EXT3_SB(sb)->s_itb_per_group; i++, bitmap_blk++) {
134 if (!block_in_use(bitmap_blk, sb, bh->b_data)) {
135 /* bad block bitmap */
136 goto error_out;
137 }
138 }
139
140 return bh;
141
142error_out: 108error_out:
143 brelse(bh); 109 return bh;
144 ext3_error(sb, __FUNCTION__,
145 "Invalid block bitmap - "
146 "block_group = %d, block = %lu",
147 block_group, bitmap_blk);
148 return NULL;
149} 110}
150/* 111/*
151 * The reservation window structure operations 112 * The reservation window structure operations
@@ -1772,7 +1733,6 @@ ext3_fsblk_t ext3_count_free_blocks(struct super_block *sb)
1772#endif 1733#endif
1773} 1734}
1774 1735
1775
1776static inline int test_root(int a, int b) 1736static inline int test_root(int a, int b)
1777{ 1737{
1778 int num = b; 1738 int num = b;