From 1907e0fec10c2498729d27550c460528e49abe1e Mon Sep 17 00:00:00 2001
From: David Howells <dhowells@redhat.com>
Date: Thu, 23 Feb 2023 08:15:38 +0000
Subject: [PATCH] cifs: Add some missing xas_retry() calls
The xas_for_each loops added into fs/cifs/file.c need to go round again if
indicated by xas_retry().
Fixes: b8713c4dbfa3 ("cifs: Add some helper functions")
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
cc: Shyam Prasad N <nspmangalore@gmail.com>
cc: Rohith Surabattula <rohiths.msft@gmail.com>
cc: Tom Talpey <tom@talpey.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-cifs@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
---
fs/cifs/file.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index ebfcaae8c4373..879524bf7528b 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -52,6 +52,8 @@ static void cifs_undirty_folios(struct inode *inode, loff_t start, unsigned int
end = (start + len - 1) / PAGE_SIZE;
xas_for_each_marked(&xas, folio, end, PAGECACHE_TAG_DIRTY) {
+ if (xas_retry(&xas, folio))
+ continue;
xas_pause(&xas);
rcu_read_unlock();
folio_lock(folio);
@@ -81,6 +83,8 @@ void cifs_pages_written_back(struct inode *inode, loff_t start, unsigned int len
end = (start + len - 1) / PAGE_SIZE;
xas_for_each(&xas, folio, end) {
+ if (xas_retry(&xas, folio))
+ continue;
if (!folio_test_writeback(folio)) {
WARN_ONCE(1, "bad %x @%llx page %lx %lx\n",
len, start, folio_index(folio), end);
@@ -112,6 +116,8 @@ void cifs_pages_write_failed(struct inode *inode, loff_t start, unsigned int len
end = (start + len - 1) / PAGE_SIZE;
xas_for_each(&xas, folio, end) {
+ if (xas_retry(&xas, folio))
+ continue;
if (!folio_test_writeback(folio)) {
WARN_ONCE(1, "bad %x @%llx page %lx %lx\n",
len, start, folio_index(folio), end);
--
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