lkml.org 
[lkml]   [2020]   [Sep]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 04/13] ceph: Tell the VFS that readpage was synchronous
Date
The ceph readpage implementation was already synchronous, so use
AOP_UPDATED_PAGE to avoid cycling the page lock.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
fs/ceph/addr.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 6ea761c84494..b2bf8bf7a312 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -291,10 +291,11 @@ static int ceph_do_readpage(struct file *filp, struct page *page)
static int ceph_readpage(struct file *filp, struct page *page)
{
int r = ceph_do_readpage(filp, page);
- if (r != -EINPROGRESS)
- unlock_page(page);
- else
- r = 0;
+ if (r == -EINPROGRESS)
+ return 0;
+ if (r == 0)
+ return AOP_UPDATED_PAGE;
+ unlock_page(page);
return r;
}

--
2.28.0
\
 
 \ /
  Last update: 2020-09-17 21:54    [W:0.669 / U:0.224 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site