diff mbox series

[12/23] ceph: use bvec_set_page to initialize a bvec

Message ID 20230130092157.1759539-13-hch@lst.de (mailing list archive)
State New
Headers show
Series [01/23] block: factor out a bvec_set_page helper | expand

Commit Message

Christoph Hellwig Jan. 30, 2023, 9:21 a.m. UTC
Use the bvec_set_page helper to initialize a bvec.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 fs/ceph/file.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

Comments

Ilya Dryomov Jan. 30, 2023, 6:02 p.m. UTC | #1
On Mon, Jan 30, 2023 at 10:22 AM Christoph Hellwig <hch@lst.de> wrote:
>
> Use the bvec_set_page helper to initialize a bvec.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
>  fs/ceph/file.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/fs/ceph/file.c b/fs/ceph/file.c
> index 764598e1efd91f..6419dce7c57987 100644
> --- a/fs/ceph/file.c
> +++ b/fs/ceph/file.c
> @@ -103,11 +103,11 @@ static ssize_t __iter_get_bvecs(struct iov_iter *iter, size_t maxsize,
>                 size += bytes;
>
>                 for ( ; bytes; idx++, bvec_idx++) {
> -                       struct bio_vec bv = {
> -                               .bv_page = pages[idx],
> -                               .bv_len = min_t(int, bytes, PAGE_SIZE - start),
> -                               .bv_offset = start,
> -                       };
> +                       struct bio_vec bv;
> +
> +                       bvec_set_page(&bv, pages[idx],

Hi Christoph,

There is trailing whitespace on this line which git complains about
and it made me take a second look.  I think bvec_set_page() allows to
make this more compact:

        for ( ; bytes; idx++, bvec_idx++) {
                int len = min_t(int, bytes, PAGE_SIZE - start);

                bvec_set_page(&bvecs[bvec_idx], pages[idx], len, start);
                bytes -= len;
                start = 0;
        }

Thanks,

                Ilya
Xiubo Li Jan. 31, 2023, 1:51 a.m. UTC | #2
On 31/01/2023 02:02, Ilya Dryomov wrote:
> On Mon, Jan 30, 2023 at 10:22 AM Christoph Hellwig <hch@lst.de> wrote:
>> Use the bvec_set_page helper to initialize a bvec.
>>
>> Signed-off-by: Christoph Hellwig <hch@lst.de>
>> ---
>>   fs/ceph/file.c | 10 +++++-----
>>   1 file changed, 5 insertions(+), 5 deletions(-)
>>
>> diff --git a/fs/ceph/file.c b/fs/ceph/file.c
>> index 764598e1efd91f..6419dce7c57987 100644
>> --- a/fs/ceph/file.c
>> +++ b/fs/ceph/file.c
>> @@ -103,11 +103,11 @@ static ssize_t __iter_get_bvecs(struct iov_iter *iter, size_t maxsize,
>>                  size += bytes;
>>
>>                  for ( ; bytes; idx++, bvec_idx++) {
>> -                       struct bio_vec bv = {
>> -                               .bv_page = pages[idx],
>> -                               .bv_len = min_t(int, bytes, PAGE_SIZE - start),
>> -                               .bv_offset = start,
>> -                       };
>> +                       struct bio_vec bv;
>> +
>> +                       bvec_set_page(&bv, pages[idx],
> Hi Christoph,
>
> There is trailing whitespace on this line which git complains about
> and it made me take a second look.  I think bvec_set_page() allows to
> make this more compact:
>
>          for ( ; bytes; idx++, bvec_idx++) {
>                  int len = min_t(int, bytes, PAGE_SIZE - start);
>
>                  bvec_set_page(&bvecs[bvec_idx], pages[idx], len, start);
>                  bytes -= len;
>                  start = 0;
>          }
>
This looks better.

Thanks
diff mbox series

Patch

diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 764598e1efd91f..6419dce7c57987 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -103,11 +103,11 @@  static ssize_t __iter_get_bvecs(struct iov_iter *iter, size_t maxsize,
 		size += bytes;
 
 		for ( ; bytes; idx++, bvec_idx++) {
-			struct bio_vec bv = {
-				.bv_page = pages[idx],
-				.bv_len = min_t(int, bytes, PAGE_SIZE - start),
-				.bv_offset = start,
-			};
+			struct bio_vec bv;
+
+			bvec_set_page(&bv, pages[idx], 
+				      min_t(int, bytes, PAGE_SIZE - start),
+				      start);
 
 			bvecs[bvec_idx] = bv;
 			bytes -= bv.bv_len;