Re: [PATCH v3 05/49] fs/buffer: comment on direct access to bvec table

2017-08-10 Thread Christoph Hellwig
> + /* > + * It is safe to truncate the last bvec in the following way > + * even though multipage bvec is supported, but we need to > + * fix the parameters passed to zero_user(). > + */ > + struct bio_vec *bvec = &bio->bi_io_vec[bio->bi_vcnt - 1]; A 'we need to fix XX

[PATCH v3 05/49] fs/buffer: comment on direct access to bvec table

2017-08-08 Thread Ming Lei
Signed-off-by: Ming Lei --- fs/buffer.c | 7 ++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/fs/buffer.c b/fs/buffer.c index 5715dac7821f..c821ed6a6f0e 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -3054,8 +3054,13 @@ static void end_bio_bh_io_sync(struct bio *bio) void guar