Re: [PATCH 31/34] nfs: convert put_page() to put_user_page*()
On 03/08/2019 2:41 am, John Hubbard wrote:
On 8/2/19 6:27 PM, Calum Mackay wrote:
On 02/08/2019 3:20 am, john.hubb...@gmail.com wrote:
...
Since it's static, and only called twice, might it be better to change its two
callers [nfs_direct_{read,write}_schedule_iovec()] to call put_user_pages()
directly, and remove nfs_direct_release_pages() entirely?
thanks,
calum.
void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo,
Hi Calum,
Absolutely! Is it OK to add your reviewed-by, with the following incremental
patch made to this one?
Thanks John; looks good.
Reviewed-by: Calum Mackay
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index b00b89dda3c5..c0c1b9f2c069 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -276,11 +276,6 @@ ssize_t nfs_direct_IO(struct kiocb *iocb, struct iov_iter
*iter)
return nfs_file_direct_write(iocb, iter);
}
-static void nfs_direct_release_pages(struct page **pages, unsigned int npages)
-{
- put_user_pages(pages, npages);
-}
-
void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo,
struct nfs_direct_req *dreq)
{
@@ -510,7 +505,7 @@ static ssize_t nfs_direct_read_schedule_iovec(struct
nfs_direct_req *dreq,
pos += req_len;
dreq->bytes_left -= req_len;
}
- nfs_direct_release_pages(pagevec, npages);
+ put_user_pages(pagevec, npages);
kvfree(pagevec);
if (result < 0)
break;
@@ -933,7 +928,7 @@ static ssize_t nfs_direct_write_schedule_iovec(struct
nfs_direct_req *dreq,
pos += req_len;
dreq->bytes_left -= req_len;
}
- nfs_direct_release_pages(pagevec, npages);
+ put_user_pages(pagevec, npages);
kvfree(pagevec);
if (result < 0)
break;
thanks,
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Re: [PATCH 31/34] nfs: convert put_page() to put_user_page*()
On 8/2/19 6:27 PM, Calum Mackay wrote:
> On 02/08/2019 3:20 am, john.hubb...@gmail.com wrote:
...
> Since it's static, and only called twice, might it be better to change its
> two callers [nfs_direct_{read,write}_schedule_iovec()] to call
> put_user_pages() directly, and remove nfs_direct_release_pages() entirely?
>
> thanks,
> calum.
>
>
>> void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo,
>>
Hi Calum,
Absolutely! Is it OK to add your reviewed-by, with the following incremental
patch made to this one?
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index b00b89dda3c5..c0c1b9f2c069 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -276,11 +276,6 @@ ssize_t nfs_direct_IO(struct kiocb *iocb, struct iov_iter
*iter)
return nfs_file_direct_write(iocb, iter);
}
-static void nfs_direct_release_pages(struct page **pages, unsigned int npages)
-{
- put_user_pages(pages, npages);
-}
-
void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo,
struct nfs_direct_req *dreq)
{
@@ -510,7 +505,7 @@ static ssize_t nfs_direct_read_schedule_iovec(struct
nfs_direct_req *dreq,
pos += req_len;
dreq->bytes_left -= req_len;
}
- nfs_direct_release_pages(pagevec, npages);
+ put_user_pages(pagevec, npages);
kvfree(pagevec);
if (result < 0)
break;
@@ -933,7 +928,7 @@ static ssize_t nfs_direct_write_schedule_iovec(struct
nfs_direct_req *dreq,
pos += req_len;
dreq->bytes_left -= req_len;
}
- nfs_direct_release_pages(pagevec, npages);
+ put_user_pages(pagevec, npages);
kvfree(pagevec);
if (result < 0)
break;
thanks,
--
John Hubbard
NVIDIA
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Re: [PATCH 31/34] nfs: convert put_page() to put_user_page*()
On 02/08/2019 3:20 am, john.hubb...@gmail.com wrote:
From: John Hubbard
For pages that were retained via get_user_pages*(), release those pages
via the new put_user_page*() routines, instead of via put_page() or
release_pages().
This is part a tree-wide conversion, as described in commit fc1d8e7cca2d
("mm: introduce put_user_page*(), placeholder versions").
Cc: Trond Myklebust
Cc: Anna Schumaker
Cc: linux-...@vger.kernel.org
Signed-off-by: John Hubbard
---
fs/nfs/direct.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index 0cb442406168..b00b89dda3c5 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -278,9 +278,7 @@ ssize_t nfs_direct_IO(struct kiocb *iocb, struct iov_iter
*iter)
static void nfs_direct_release_pages(struct page **pages, unsigned int npages)
{
- unsigned int i;
- for (i = 0; i < npages; i++)
- put_page(pages[i]);
+ put_user_pages(pages, npages);
}
Since it's static, and only called twice, might it be better to change
its two callers [nfs_direct_{read,write}_schedule_iovec()] to call
put_user_pages() directly, and remove nfs_direct_release_pages() entirely?
thanks,
calum.
void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo,
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[PATCH 31/34] nfs: convert put_page() to put_user_page*()
From: John Hubbard
For pages that were retained via get_user_pages*(), release those pages
via the new put_user_page*() routines, instead of via put_page() or
release_pages().
This is part a tree-wide conversion, as described in commit fc1d8e7cca2d
("mm: introduce put_user_page*(), placeholder versions").
Cc: Trond Myklebust
Cc: Anna Schumaker
Cc: linux-...@vger.kernel.org
Signed-off-by: John Hubbard
---
fs/nfs/direct.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index 0cb442406168..b00b89dda3c5 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -278,9 +278,7 @@ ssize_t nfs_direct_IO(struct kiocb *iocb, struct iov_iter
*iter)
static void nfs_direct_release_pages(struct page **pages, unsigned int npages)
{
- unsigned int i;
- for (i = 0; i < npages; i++)
- put_page(pages[i]);
+ put_user_pages(pages, npages);
}
void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo,
--
2.22.0
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