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Date: Tue, 27 Oct 2020 23:56:43 -0400 From: "Theodore Y. Ts'o" <tytso@....edu> To: Jan Kara <jack@...e.cz> Cc: linux-ext4@...r.kernel.org, Mauricio Faria de Oliveira <mfo@...onical.com> Subject: Re: [PATCH] ext4: Fix mmap write protection for data=journal mode On Tue, Oct 27, 2020 at 02:27:51PM +0100, Jan Kara wrote: > Commit afb585a97f81 "ext4: data=journal: write-protect pages on > j_submit_inode_data_buffers()") added calls ext4_jbd2_inode_add_write() > to track inode ranges whose mappings need to get write-protected during > transaction commits. However the added calls use wrong start of a range > (0 instead of page offset) and so write protection is not necessarily > effective. Use correct range start to fix the problem. > > Fixes: afb585a97f81 ("ext4: data=journal: write-protect pages on j_submit_inode_data_buffers()") > Signed-off-by: Jan Kara <jack@...e.cz> Thanks, applied. - Ted
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