From c944eae25654394a246f464c0c042e7a1b4ff603 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 22 Sep 2020 10:18:26 +0800 Subject: [PATCH] NFS: Revalidate the file size on a fatal write error stable inclusion from linux-4.19.104 commit 3060883146e59cb60c7e2d8981bc256f7c5283df -------------------------------- commit 0df68ced55443243951d02cc497be31fadf28173 upstream. If we suffer a fatal error upon writing a file, which causes us to need to revalidate the entire mapping, then we should also revalidate the file size. Fixes: d2ceb7e57086 ("NFS: Don't use page_file_mapping after removing the page") Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker Signed-off-by: Greg Kroah-Hartman Signed-off-by: Yang Yingliang --- fs/nfs/write.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/fs/nfs/write.c b/fs/nfs/write.c index e27637fa0f79..e8152781814d 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -240,7 +240,15 @@ static void nfs_grow_file(struct page *page, unsigned int offset, unsigned int c /* A writeback failed: mark the page as bad, and invalidate the page cache */ static void nfs_set_pageerror(struct address_space *mapping) { + struct inode *inode = mapping->host; + nfs_zap_mapping(mapping->host, mapping); + /* Force file size revalidation */ + spin_lock(&inode->i_lock); + NFS_I(inode)->cache_validity |= NFS_INO_REVAL_FORCED | + NFS_INO_REVAL_PAGECACHE | + NFS_INO_INVALID_SIZE; + spin_unlock(&inode->i_lock); } /* -- GitLab