Linux-f2fs-devel Archive on lore.kernel.org
 help / color / Atom feed
From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>, Jaegeuk Kim <jaegeuk@kernel.org>,
	linux-f2fs-devel@lists.sourceforge.net
Subject: [f2fs-dev] [PATCH AUTOSEL 4.19 064/191] f2fs: avoid infinite loop in f2fs_alloc_nid
Date: Sat,  9 Nov 2019 21:38:06 -0500
Message-ID: <20191110024013.29782-64-sashal@kernel.org> (raw)
In-Reply-To: <20191110024013.29782-1-sashal@kernel.org>

From: Jaegeuk Kim <jaegeuk@kernel.org>

[ Upstream commit f84262b0862d43b71b3e80a036cdd9d82e620367 ]

If we have an error in f2fs_build_free_nids, we're able to fall into a loop
to find free nids.

Suggested-by: Chao Yu <chao@kernel.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/f2fs/node.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index aa8f19e1bdb3d..e5d474681471c 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -2367,8 +2367,9 @@ bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid)
 	spin_unlock(&nm_i->nid_list_lock);
 
 	/* Let's scan nat pages and its caches to get free nids */
-	f2fs_build_free_nids(sbi, true, false);
-	goto retry;
+	if (!f2fs_build_free_nids(sbi, true, false))
+		goto retry;
+	return false;
 }
 
 /*
-- 
2.20.1



_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel

       reply index

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20191110024013.29782-1-sashal@kernel.org>
2019-11-10  2:38 ` Sasha Levin [this message]
2019-11-10  2:38 ` [f2fs-dev] [PATCH AUTOSEL 4.19 065/191] f2fs: fix to recover inode's uid/gid during POR Sasha Levin
2019-11-10  2:39 ` [f2fs-dev] [PATCH AUTOSEL 4.19 128/191] f2fs: fix remount problem of option io_bits Sasha Levin
2019-11-10  2:39 ` [f2fs-dev] [PATCH AUTOSEL 4.19 146/191] f2fs: update i_size after DIO completion Sasha Levin
2019-11-10  2:39 ` [f2fs-dev] [PATCH AUTOSEL 4.19 147/191] f2fs: fix to recover inode's project id during POR Sasha Levin
2019-11-10  2:39 ` [f2fs-dev] [PATCH AUTOSEL 4.19 148/191] f2fs: mark inode dirty explicitly in recover_inode() Sasha Levin

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20191110024013.29782-64-sashal@kernel.org \
    --to=sashal@kernel.org \
    --cc=jaegeuk@kernel.org \
    --cc=linux-f2fs-devel@lists.sourceforge.net \
    --cc=linux-kernel@vger.kernel.org \
    --cc=stable@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-f2fs-devel Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-f2fs-devel/0 linux-f2fs-devel/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-f2fs-devel linux-f2fs-devel/ https://lore.kernel.org/linux-f2fs-devel \
		linux-f2fs-devel@lists.sourceforge.net
	public-inbox-index linux-f2fs-devel

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/net.sourceforge.lists.linux-f2fs-devel


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git