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net: convert sunrpc from pagevec to folio_batch 

Remove the last usage of pagevecs.  There is a slight change here; we now
free the folio_batch as soon as it fills up instead of freeing the
folio_batch when we try to add a page to a full batch.  This should have
no effect in practice.

Link: https://lkml.kernel.org/r/20230621164557.3510324-10-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2023-06-21 17:45:53 +01:00 committed by Andrew Morton
parent f8a101ff09
commit 76fa884290
2 changed files with 6 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/linux/sunrpc/svc.h
View File

@ -223,7 +223,7 @@ struct svc_rqst {
struct page * *rq_next_page; /* next reply page to use */
struct page * *rq_page_end; /* one past the last page */
struct pagevec rq_pvec;
struct folio_batch rq_fbatch;
struct kvec rq_vec[RPCSVC_MAXPAGES]; /* generally useful.. */
struct bio_vec rq_bvec[RPCSVC_MAXPAGES];

10
net/sunrpc/svc.c
View File

@ -649,7 +649,7 @@ svc_rqst_alloc(struct svc_serv *serv, struct svc_pool *pool, int node)
if (!rqstp)
return rqstp;
pagevec_init(&rqstp->rq_pvec);
folio_batch_init(&rqstp->rq_fbatch);
__set_bit(RQ_BUSY, &rqstp->rq_flags);
rqstp->rq_server = serv;
@ -860,9 +860,9 @@ bool svc_rqst_replace_page(struct svc_rqst *rqstp, struct page *page)
}
if (*rqstp->rq_next_page) {
if (!pagevec_space(&rqstp->rq_pvec))
__pagevec_release(&rqstp->rq_pvec);
pagevec_add(&rqstp->rq_pvec, *rqstp->rq_next_page);
if (!folio_batch_add(&rqstp->rq_fbatch,
page_folio(*rqstp->rq_next_page)))
__folio_batch_release(&rqstp->rq_fbatch);
}
get_page(page);
@ -896,7 +896,7 @@ void svc_rqst_release_pages(struct svc_rqst *rqstp)
void
svc_rqst_free(struct svc_rqst *rqstp)
{
pagevec_release(&rqstp->rq_pvec);
folio_batch_release(&rqstp->rq_fbatch);
svc_release_buffer(rqstp);
if (rqstp->rq_scratch_page)
put_page(rqstp->rq_scratch_page);