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authorJan Kara <jack@suse.cz>2022-12-21 17:45:51 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2023-01-12 12:00:42 +0100
commit8df176a823c828765d3d6fde6eed47ec1721f459 (patch)
treea169fc96ea00694412c4ad032bf7c8e38108651c
parent1dddeceb26002cfea4c375e92ac6498768dc7349 (diff)
udf: Fix extension of the last extent in the file
[ Upstream commit 83c7423d1eb6806d13c521d1002cc1a012111719 ] 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> Signed-off-by: Sasha Levin <sashal@kernel.org>
-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 b9a83820e1ad..3c380140515d 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -600,7 +600,7 @@ 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;