On 11/11/17 11:21 AM, Zorro Lang wrote:
> do_preadv and do_pwritev all have a 'buffer_size' argument, but they
> never used it. Instead of it, they use global 'buffersize' variable,
> which is initialized in alloc_buffer(). As the 'buffer_size' is
> useless, so remove it for clear code.
>
> Signed-off-by: Zorro Lang <zlang@xxxxxxxxxx>
I'm going to hold off on this one for 4.14; I want to think a bit about
why we have this global in the first place, and if it makes more sense
to eliminate the global and pass the buffer size around properly.
Thanks,
-Eric
> ---
> io/pread.c | 7 +++----
> io/pwrite.c | 5 ++---
> 2 files changed, 5 insertions(+), 7 deletions(-)
>
> diff --git a/io/pread.c b/io/pread.c
> index 60650aa3..98e992b0 100644
> --- a/io/pread.c
> +++ b/io/pread.c
> @@ -176,8 +176,7 @@ static ssize_t
> do_preadv(
> int fd,
> off64_t offset,
> - size_t count,
> - size_t buffer_size)
> + size_t count)
> {
> int vecs = 0;
> ssize_t oldlen = 0;
> @@ -205,7 +204,7 @@ do_preadv(
> return bytes;
> }
> #else
> -#define do_preadv(fd, offset, count, buffer_size) (0)
> +#define do_preadv(fd, offset, count) (0)
> #endif
>
> static ssize_t
> @@ -218,7 +217,7 @@ do_pread(
> if (!vectors)
> return pread(fd, buffer, min(count, buffer_size), offset);
>
> - return do_preadv(fd, offset, count, buffer_size);
> + return do_preadv(fd, offset, count);
> }
>
> static int
> diff --git a/io/pwrite.c b/io/pwrite.c
> index a89edfd0..f75c6164 100644
> --- a/io/pwrite.c
> +++ b/io/pwrite.c
> @@ -66,7 +66,6 @@ do_pwritev(
> int fd,
> off64_t offset,
> size_t count,
> - size_t buffer_size,
> int pwritev2_flags)
> {
> int vecs = 0;
> @@ -102,7 +101,7 @@ do_pwritev(
> return bytes;
> }
> #else
> -#define do_pwritev(fd, offset, count, buffer_size, pwritev2_flags) (0)
> +#define do_pwritev(fd, offset, count, pwritev2_flags) (0)
> #endif
>
> static ssize_t
> @@ -116,7 +115,7 @@ do_pwrite(
> if (!vectors)
> return pwrite(fd, buffer, min(count, buffer_size), offset);
>
> - return do_pwritev(fd, offset, count, buffer_size, pwritev2_flags);
> + return do_pwritev(fd, offset, count, pwritev2_flags);
> }
>
> static int
>
--
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