From: Trond Myklebust Date: Mon, 6 Jan 2020 20:25:00 +0000 (-0500) Subject: NFS: Revalidate the file size on a fatal write error X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=0df68ced55443243951d02cc497be31fadf28173;p=openwrt%2Fstaging%2Fblogic.git NFS: Revalidate the file size on a fatal write error 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 --- diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 21787711e352..adedc16780c5 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -243,7 +243,15 @@ out: /* 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); } static void nfs_mapping_set_error(struct page *page, int error)