Block number '0' should not be used as the fake block number for
the delayed new buffer. This will result in vfs calling umap_underlying_metadata for
block number '0'. So use -1 instead.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
---
fs/ext4/inode.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index e91f978..3afd5f1 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -2318,7 +2318,7 @@ static int ext4_da_get_block_prep(struct inode *inode, sector_t iblock,
/* not enough space to reserve */
return ret;
- map_bh(bh_result, inode->i_sb, 0);
+ map_bh(bh_result, inode->i_sb, -1);
set_buffer_new(bh_result);
set_buffer_delay(bh_result);
} else if (ret > 0) {
--
tg: (56a50ad..) ext4_corruption_fix (depends on: master)
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