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path: root/fs/ext4/fsmap.c
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Diffstat (limited to 'fs/ext4/fsmap.c')
-rw-r--r--fs/ext4/fsmap.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/ext4/fsmap.c b/fs/ext4/fsmap.c
index b19436098837..7ec340898598 100644
--- a/fs/ext4/fsmap.c
+++ b/fs/ext4/fsmap.c
@@ -480,6 +480,7 @@ static int ext4_getfsmap_datadev(struct super_block *sb,
struct ext4_sb_info *sbi = EXT4_SB(sb);
ext4_fsblk_t start_fsb;
ext4_fsblk_t end_fsb;
+ ext4_fsblk_t bofs;
ext4_fsblk_t eofs;
ext4_group_t start_ag;
ext4_group_t end_ag;
@@ -487,9 +488,12 @@ static int ext4_getfsmap_datadev(struct super_block *sb,
ext4_grpblk_t last_cluster;
int error = 0;
+ bofs = le32_to_cpu(sbi->s_es->s_first_data_block);
eofs = ext4_blocks_count(sbi->s_es);
if (keys[0].fmr_physical >= eofs)
return 0;
+ else if (keys[0].fmr_physical < bofs)
+ keys[0].fmr_physical = bofs;
if (keys[1].fmr_physical >= eofs)
keys[1].fmr_physical = eofs - 1;
start_fsb = keys[0].fmr_physical;