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-rw-r--r--fs/ext4/extents.c20
1 files changed, 12 insertions, 8 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 6132353..e403321 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -326,11 +326,14 @@ ext4_ext_max_entries(struct inode *inode, int depth)
static int ext4_valid_extent(struct inode *inode, struct ext4_extent *ext)
{
- ext4_fsblk_t block = ext_pblock(ext);
+ ext4_fsblk_t block = ext_pblock(ext), valid_block;
int len = ext4_ext_get_actual_len(ext);
struct ext4_super_block *es = EXT4_SB(inode->i_sb)->s_es;
- if (unlikely(block < le32_to_cpu(es->s_first_data_block) ||
- ((block + len) > ext4_blocks_count(es))))
+
+ valid_block = le32_to_cpu(es->s_first_data_block) +
+ EXT4_SB(inode->i_sb)->s_gdb_count;
+ if (unlikely(block <= valid_block ||
+ ((block + len) > ext4_blocks_count(es))))
return 0;
else
return 1;
@@ -339,10 +342,13 @@ static int ext4_valid_extent(struct inode *inode, struct ext4_extent *ext)
static int ext4_valid_extent_idx(struct inode *inode,
struct ext4_extent_idx *ext_idx)
{
- ext4_fsblk_t block = idx_pblock(ext_idx);
+ ext4_fsblk_t block = idx_pblock(ext_idx), valid_block;
struct ext4_super_block *es = EXT4_SB(inode->i_sb)->s_es;
- if (unlikely(block < le32_to_cpu(es->s_first_data_block) ||
- (block >= ext4_blocks_count(es))))
+
+ valid_block = le32_to_cpu(es->s_first_data_block) +
+ EXT4_SB(inode->i_sb)->s_gdb_count;
+ if (unlikely(block <= valid_block ||
+ (block >= ext4_blocks_count(es))))
return 0;
else
return 1;
@@ -2416,8 +2422,6 @@ static int ext4_ext_zeroout(struct inode *inode, struct ext4_extent *ex)
len = ee_len;
bio = bio_alloc(GFP_NOIO, len);
- if (!bio)
- return -ENOMEM;
bio->bi_sector = ee_pblock;
bio->bi_bdev = inode->i_sb->s_bdev;
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