From 7f2b4e8ea5b49846f7d20f1694dbca81f88b8d50 Mon Sep 17 00:00:00 2001
From: Chao Yu <yuchao0@huawei.com>
Date: Tue, 8 Aug 2017 19:09:08 +0800
Subject: [PATCH] f2fs: retry to revoke atomic commit in -ENOMEM case
During atomic committing, if we encounter -ENOMEM in revoke path, it's
better to give a chance to retry revoking.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
fs/f2fs/segment.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 95267630c8c46..05144b3a7f622 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -213,9 +213,15 @@ static int __revoke_inmem_pages(struct inode *inode,
struct node_info ni;
trace_f2fs_commit_inmem_page(page, INMEM_REVOKE);
-
+retry:
set_new_dnode(&dn, inode, NULL, NULL, 0);
- if (get_dnode_of_data(&dn, page->index, LOOKUP_NODE)) {
+ err = get_dnode_of_data(&dn, page->index, LOOKUP_NODE);
+ if (err) {
+ if (err == -ENOMEM) {
+ congestion_wait(BLK_RW_ASYNC, HZ/50);
+ cond_resched();
+ goto retry;
+ }
err = -EAGAIN;
goto next;
}
--
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