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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: 1f3868f068 ("udf: Fix extending file within last block")
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara 2022-12-21 17:45:51 +01:00
parent 41c03ba9be
commit 83c7423d1e
1 changed files with 1 additions and 1 deletions
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2
fs/udf/inode.c
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@ -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;