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-rw-r--r--fs/ext2/balloc.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/ext2/balloc.c b/fs/ext2/balloc.c
index 547c165299c0..92e9a7489174 100644
--- a/fs/ext2/balloc.c
+++ b/fs/ext2/balloc.c
@@ -1203,13 +1203,13 @@ int ext2_data_block_valid(struct ext2_sb_info *sbi, ext2_fsblk_t start_blk,
unsigned int count)
{
if ((start_blk <= le32_to_cpu(sbi->s_es->s_first_data_block)) ||
- (start_blk + count < start_blk) ||
- (start_blk > le32_to_cpu(sbi->s_es->s_blocks_count)))
+ (start_blk + count - 1 < start_blk) ||
+ (start_blk + count - 1 >= le32_to_cpu(sbi->s_es->s_blocks_count)))
return 0;
/* Ensure we do not step over superblock */
if ((start_blk <= sbi->s_sb_block) &&
- (start_blk + count >= sbi->s_sb_block))
+ (start_blk + count - 1 >= sbi->s_sb_block))
return 0;
return 1;