Re: [PATCH 5.4/5.10/5.15] nfs: Leave pages in the pagecache if readpage failed

On Wed, Jun 26, 2024 at 11:46:14AM -0700, Kuniyuki Iwashima wrote:

From: "Matthew Wilcox (Oracle)" willy@infradead.org

commit 0b768a9610c6de9811c6d33900bebfb665192ee1 upstream

The pagecache handles readpage failing by itself; it doesn't want filesystems to remove pages from under it.

Signed-off-by: Matthew Wilcox (Oracle) willy@infradead.org Signed-off-by: Kuniyuki Iwashima kuniyu@amazon.com

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When NFS server returns NFS4ERR_SERVERFAULT, the client returned Remote I/O error immediately on 4.14 and 6.1, but on 5.4/5.10/5.15, the client retries forever and get stuck until userspace aborts it.

The patch fixed the issue but did not have Fixes: tag.

Please backport this to 5.4/5.10/5.15.

Now queued up, thanks.

greg k-h