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authorJan Kara <jack@suse.cz>2022-12-21 17:45:51 +0100
committerJan Kara <jack@suse.cz>2023-01-06 15:44:07 +0100
commit83c7423d1eb6806d13c521d1002cc1a012111719 (patch)
treef88fec02d7b2f94e649619ce7b1a0918834447a1
parent41c03ba9beea760bd2d2ac9250b09a2e192da2dc (diff)
udf: Fix extension of the last extent in the file
When extending the last extent in the file within the last block, we wrongly computed the length of the last extent. This is mostly a cosmetical problem since the extent does not contain any data and the length will be fixed up by following operations but still. Fixes: 1f3868f06855 ("udf: Fix extending file within last block") Signed-off-by: Jan Kara <jack@suse.cz>
-rw-r--r--fs/udf/inode.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 1d7c2a812fc1..f3e988928d1d 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -595,7 +595,7 @@ static void udf_do_extend_final_block(struct inode *inode,
*/
if (new_elen <= (last_ext->extLength & UDF_EXTENT_LENGTH_MASK))
return;
- added_bytes = (last_ext->extLength & UDF_EXTENT_LENGTH_MASK) - new_elen;
+ added_bytes = new_elen - (last_ext->extLength & UDF_EXTENT_LENGTH_MASK);
last_ext->extLength += added_bytes;
UDF_I(inode)->i_lenExtents += added_bytes;