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NFS: Revalidate the file size on a fatal write error 

commit 0df68ced55 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: d2ceb7e570 ("NFS: Don't use page_file_mapping after removing the page")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
Trond Myklebust 2020-01-06 15:25:00 -05:00 committed by Greg Kroah-Hartman
parent b7560b5b72
commit 1ef47a06d2
1 changed files with 8 additions and 0 deletions
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8
fs/nfs/write.c
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@ -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)