From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
To: linux-fsdevel@vger.kernel.org
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>,
linux-mm@kvack.org, Tyler Hicks <code@tyhicks.com>,
ecryptfs@vger.kernel.org
Subject: [PATCH v3 10/18] ecryptfs: Tell the VFS that readpage was synchronous
Date: Fri, 16 Oct 2020 17:04:35 +0100 [thread overview]
Message-ID: <20201016160443.18685-11-willy@infradead.org> (raw)
In-Reply-To: <20201016160443.18685-1-willy@infradead.org>
The ecryptfs 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/ecryptfs/mmap.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/fs/ecryptfs/mmap.c b/fs/ecryptfs/mmap.c
index 019572c6b39a..dee35181d789 100644
--- a/fs/ecryptfs/mmap.c
+++ b/fs/ecryptfs/mmap.c
@@ -219,12 +219,13 @@ static int ecryptfs_readpage(struct file *file, struct page *page)
}
}
out:
- if (rc)
- ClearPageUptodate(page);
- else
- SetPageUptodate(page);
- ecryptfs_printk(KERN_DEBUG, "Unlocking page with index = [0x%.16lx]\n",
+ ecryptfs_printk(KERN_DEBUG, "Returning page with index = [0x%.16lx]\n",
page->index);
+ if (!rc) {
+ SetPageUptodate(page);
+ return AOP_UPDATED_PAGE;
+ }
+ ClearPageUptodate(page);
unlock_page(page);
return rc;
}
--
2.28.0
prev parent reply other threads:[~2020-10-16 16:04 UTC|newest]
Thread overview: 2+ 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 ` Matthew Wilcox (Oracle) [this message]
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