exfat: hold the invalidate lock while truncating

truncate_setsize() ends in truncate_inode_pages(), which is documented
as being "Called under (and serialised by) inode->i_rwsem and
mapping->invalidate_lock".

Hold invalidate_lock while executing truncate_setsize() to ensure that
truncate and mmap writes are mutually exclusive. This can simplify the
handling in exfat_page_mkwrite().

Fixes: 82a81a7352bc ("exfat: add iomap buffered I/O support")
Cc: stable@vger.kernel.org
Signed-off-by: Chi Zhiling <chizhiling@kylinos.cn>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

0 files changed, 0 insertions, 0 deletions