Linux-Fsdevel Archive on lore.kernel.org
 help / color / Atom feed
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
To: linux-fsdevel@vger.kernel.org
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>,
	linux-mm@kvack.org, Richard Weinberger <richard@nod.at>
Subject: [PATCH v3 16/18] ubifs: Tell the VFS that readpage was synchronous
Date: Fri, 16 Oct 2020 17:04:41 +0100
Message-ID: <20201016160443.18685-17-willy@infradead.org> (raw)
In-Reply-To: <20201016160443.18685-1-willy@infradead.org>

The ubifs 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>
Acked-by: Richard Weinberger <richard@nod.at>
---
 fs/ubifs/file.c | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index b77d1637bbbc..82633509c45e 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -772,7 +772,6 @@ static int ubifs_do_bulk_read(struct ubifs_info *c, struct bu_info *bu,
 	if (err)
 		goto out_warn;
 
-	unlock_page(page1);
 	ret = 1;
 
 	isize = i_size_read(inode);
@@ -892,11 +891,16 @@ static int ubifs_bulk_read(struct page *page)
 
 static int ubifs_readpage(struct file *file, struct page *page)
 {
-	if (ubifs_bulk_read(page))
-		return 0;
-	do_readpage(page);
-	unlock_page(page);
-	return 0;
+	int err;
+
+	err = ubifs_bulk_read(page);
+	if (err == 0)
+		err = do_readpage(page);
+	if (err < 0) {
+		unlock_page(page);
+		return err;
+	}
+	return AOP_UPDATED_PAGE;
 }
 
 static int do_writepage(struct page *page, int len)
-- 
2.28.0


  parent reply index

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-16 16:04 [PATCH v3 00/18] Allow readpage to return a locked page Matthew Wilcox (Oracle)
2020-10-16 16:04 ` [PATCH v3 01/18] cachefiles: Handle readpage error correctly Matthew Wilcox (Oracle)
2020-10-16 16:04 ` [PATCH v3 02/18] swap: Call aops->readahead if appropriate Matthew Wilcox (Oracle)
2020-10-16 16:04 ` [PATCH v3 03/18] fs: Add AOP_UPDATED_PAGE return value Matthew Wilcox (Oracle)
2020-10-16 16:04 ` [PATCH v3 04/18] mm/filemap: Inline wait_on_page_read into its one caller Matthew Wilcox (Oracle)
2020-10-16 16:04 ` [PATCH v3 05/18] 9p: Tell the VFS that readpage was synchronous Matthew Wilcox (Oracle)
2020-10-16 16:04 ` [PATCH v3 06/18] afs: " Matthew Wilcox (Oracle)
2020-10-16 16:04 ` [PATCH v3 07/18] ceph: " Matthew Wilcox (Oracle)
2020-10-16 16:04 ` [PATCH v3 08/18] cifs: " Matthew Wilcox (Oracle)
2020-10-16 16:04 ` [PATCH v3 09/18] cramfs: " Matthew Wilcox (Oracle)
2020-10-16 16:04 ` [PATCH v3 10/18] ecryptfs: " Matthew Wilcox (Oracle)
2020-10-16 16:04 ` [PATCH v3 11/18] ext4: " Matthew Wilcox (Oracle)
2020-10-18 14:24   ` Theodore Y. Ts'o
2020-10-16 16:04 ` [PATCH v3 12/18] ext4: Return error from ext4_readpage Matthew Wilcox (Oracle)
2020-10-18 14:25   ` Theodore Y. Ts'o
2020-10-18 15:04     ` Matthew Wilcox
2020-10-16 16:04 ` [PATCH v3 13/18] fuse: Tell the VFS that readpage was synchronous Matthew Wilcox (Oracle)
2020-10-20 14:13   ` Miklos Szeredi
2020-10-16 16:04 ` [PATCH v3 14/18] hostfs: " Matthew Wilcox (Oracle)
2020-10-16 16:04 ` [PATCH v3 15/18] jffs2: " Matthew Wilcox (Oracle)
2020-10-16 16:04 ` Matthew Wilcox (Oracle) [this message]
2020-10-16 16:04 ` [PATCH v3 17/18] udf: " Matthew Wilcox (Oracle)
2020-10-16 16:04 ` [PATCH v3 18/18] vboxsf: " Matthew Wilcox (Oracle)

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20201016160443.18685-17-willy@infradead.org \
    --to=willy@infradead.org \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=richard@nod.at \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-Fsdevel Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-fsdevel/0 linux-fsdevel/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-fsdevel linux-fsdevel/ https://lore.kernel.org/linux-fsdevel \
		linux-fsdevel@vger.kernel.org
	public-inbox-index linux-fsdevel

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-fsdevel


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git