[PATCH v9 1/5] NFS: Rename readpage_async_filler to nfs_pageio_add_page

Dave Wysochanski
2022-10-17T10:52:33Z

Rename readpage_async_filler to nfs_pageio_add_page to
better reflect what this function does (add a page to
the nfs_pageio_descriptor), and simplify arguments to
this function by removing struct nfs_readdesc.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
---
fs/nfs/read.c | 60 +++++++++++++++++++++++++--------------------------
1 file changed, 30 insertions(+), 30 deletions(-)

diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index 8ae2c8d1219d..525e82ea9a9e 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -127,11 +127,6 @@ static void nfs_readpage_release(struct nfs_page *req, int error)
nfs_release_request(req);
}

-struct nfs_readdesc {
- struct nfs_pageio_descriptor pgio;
- struct nfs_open_context *ctx;
-};
-
static void nfs_page_group_set_uptodate(struct nfs_page *req)
{
if (nfs_page_group_sync_on_bit(req, PG_UPTODATE))
@@ -153,7 +148,8 @@ static void nfs_read_completion(struct nfs_pgio_header *hdr)

if (test_bit(NFS_IOHDR_EOF, &hdr->flags)) {
/* note: regions of the page not covered by a
- * request are zeroed in readpage_async_filler */
+ * request are zeroed in nfs_pageio_add_page
+ */
if (bytes > hdr->good_bytes) {
/* nothing in this request was good, so zero
* the full extent of the request */
@@ -281,8 +277,10 @@ static void nfs_readpage_result(struct rpc_task *task,
nfs_readpage_retry(task, hdr);
}

-static int
-readpage_async_filler(struct nfs_readdesc *desc, struct page *page)
+int
+nfs_pageio_add_page(struct nfs_pageio_descriptor *pgio,
+ struct nfs_open_context *ctx,
+ struct page *page)
{
struct inode *inode = page_file_mapping(page)->host;
unsigned int rsize = NFS_SERVER(inode)->rsize;
@@ -302,15 +300,15 @@ readpage_async_filler(struct nfs_readdesc *desc, struct page *page)
goto out_unlock;
}

- new = nfs_create_request(desc->ctx, page, 0, aligned_len);
+ new = nfs_create_request(ctx, page, 0, aligned_len);
if (IS_ERR(new))
goto out_error;

if (len < PAGE_SIZE)
zero_user_segment(page, len, PAGE_SIZE);
- if (!nfs_pageio_add_request(&desc->pgio, new)) {
+ if (!nfs_pageio_add_request(pgio, new)) {
nfs_list_remove_request(new);
- error = desc->pgio.pg_error;
+ error = pgio->pg_error;
nfs_readpage_release(new, error);
goto out;
}
@@ -332,7 +330,8 @@ readpage_async_filler(struct nfs_readdesc *desc, struct page *page)
int nfs_read_folio(struct file *file, struct folio *folio)
{
struct page *page = &folio->page;
- struct nfs_readdesc desc;
+ struct nfs_pageio_descriptor pgio;
+ struct nfs_open_context *ctx;
struct inode *inode = page_file_mapping(page)->host;
int ret;

@@ -358,29 +357,29 @@ int nfs_read_folio(struct file *file, struct folio *folio)

if (file == NULL) {
ret = -EBADF;
- desc.ctx = nfs_find_open_context(inode, NULL, FMODE_READ);
- if (desc.ctx == NULL)
+ ctx = nfs_find_open_context(inode, NULL, FMODE_READ);
+ if (ctx == NULL)
goto out_unlock;
} else
- desc.ctx = get_nfs_open_context(nfs_file_open_context(file));
+ ctx = get_nfs_open_context(nfs_file_open_context(file));

- xchg(&desc.ctx->error, 0);
- nfs_pageio_init_read(&desc.pgio, inode, false,
+ xchg(&ctx->error, 0);
+ nfs_pageio_init_read(&pgio, inode, false,
&nfs_async_read_completion_ops);

- ret = readpage_async_filler(&desc, page);
+ ret = nfs_pageio_add_page(&pgio, ctx, page);
if (ret)
goto out;

- nfs_pageio_complete_read(&desc.pgio);
- ret = desc.pgio.pg_error < 0 ? desc.pgio.pg_error : 0;
+ nfs_pageio_complete_read(&pgio);
+ ret = pgio.pg_error < 0 ? pgio.pg_error : 0;
if (!ret) {
ret = wait_on_page_locked_killable(page);
if (!PageUptodate(page) && !ret)
- ret = xchg(&desc.ctx->error, 0);
+ ret = xchg(&ctx->error, 0);
}
out:
- put_nfs_open_context(desc.ctx);
+ put_nfs_open_context(ctx);
trace_nfs_aop_readpage_done(inode, page, ret);
return ret;
out_unlock:
@@ -391,9 +390,10 @@ int nfs_read_folio(struct file *file, struct folio *folio)

void nfs_readahead(struct readahead_control *ractl)
{
+ struct nfs_pageio_descriptor pgio;
+ struct nfs_open_context *ctx;
unsigned int nr_pages = readahead_count(ractl);
struct file *file = ractl->file;
- struct nfs_readdesc desc;
struct inode *inode = ractl->mapping->host;
struct page *page;
int ret;
@@ -407,25 +407,25 @@ void nfs_readahead(struct readahead_control *ractl)

if (file == NULL) {
ret = -EBADF;
- desc.ctx = nfs_find_open_context(inode, NULL, FMODE_READ);
- if (desc.ctx == NULL)
+ ctx = nfs_find_open_context(inode, NULL, FMODE_READ);
+ if (ctx == NULL)
goto out;
} else
- desc.ctx = get_nfs_open_context(nfs_file_open_context(file));
+ ctx = get_nfs_open_context(nfs_file_open_context(file));

- nfs_pageio_init_read(&desc.pgio, inode, false,
+ nfs_pageio_init_read(&pgio, inode, false,
&nfs_async_read_completion_ops);

while ((page = readahead_page(ractl)) != NULL) {
- ret = readpage_async_filler(&desc, page);
+ ret = nfs_pageio_add_page(&pgio, ctx, page);
put_page(page);
if (ret)
break;
}

- nfs_pageio_complete_read(&desc.pgio);
+ nfs_pageio_complete_read(&pgio);

- put_nfs_open_context(desc.ctx);
+ put_nfs_open_context(ctx);
out:
trace_nfs_aop_readahead_done(inode, nr_pages, ret);
}
--
2.31.1