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From: Christoph Hellwig <hch@lst.de>
To: "Theodore Ts'o" <tytso@mit.edu>, Jaegeuk Kim <jaegeuk@kernel.org>,
	Chao Yu <chao@kernel.org>, Al Viro <viro@zeniv.linux.org.uk>,
	Richard Weinberger <richard@nod.at>,
	linux-xfs@vger.kernel.org
Cc: linux-kernel@vger.kernel.org,
	linux-f2fs-devel@lists.sourceforge.net,
	Eric Biggers <ebiggers@kernel.org>,
	linux-mtd@lists.infradead.org, linux-fsdevel@vger.kernel.org,
	linux-ext4@vger.kernel.org
Subject: [PATCH 1/4] ubifs: remove broken lazytime support
Date: Wed, 25 Mar 2020 13:28:22 +0100
Message-ID: <20200325122825.1086872-2-hch@lst.de> (raw)
In-Reply-To: <20200325122825.1086872-1-hch@lst.de>

When "ubifs: introduce UBIFS_ATIME_SUPPORT to ubifs" introduces atime
support to ubifs, it also lazytime support, but that support is
terminally broken, as it causes mark_inode_dirty_sync to be called from
__writeback_single_inode, which will then trigger the locking assert
in ubifs_dirty_inode.  Just remove this broken support for now, it can
be readded later, especially as some infrastructure changes should
make that easier soon.

Fixes: 8c1c5f263833 ("ubifs: introduce UBIFS_ATIME_SUPPORT to ubifs")
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 fs/ubifs/file.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index 743928efffc1..49fe062ce45e 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -1375,7 +1375,6 @@ int ubifs_update_time(struct inode *inode, struct timespec64 *time,
 	struct ubifs_info *c = inode->i_sb->s_fs_info;
 	struct ubifs_budget_req req = { .dirtied_ino = 1,
 			.dirtied_ino_d = ALIGN(ui->data_len, 8) };
-	int iflags = I_DIRTY_TIME;
 	int err, release;
 
 	if (!IS_ENABLED(CONFIG_UBIFS_ATIME_SUPPORT))
@@ -1393,11 +1392,8 @@ int ubifs_update_time(struct inode *inode, struct timespec64 *time,
 	if (flags & S_MTIME)
 		inode->i_mtime = *time;
 
-	if (!(inode->i_sb->s_flags & SB_LAZYTIME))
-		iflags |= I_DIRTY_SYNC;
-
 	release = ui->dirty;
-	__mark_inode_dirty(inode, iflags);
+	__mark_inode_dirty(inode, I_DIRTY_SYNC);
 	mutex_unlock(&ui->ui_mutex);
 	if (release)
 		ubifs_release_budget(c, &req);
-- 
2.25.1


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Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-25 12:28 lazytime fixes Christoph Hellwig
2020-03-25 12:28 ` Christoph Hellwig [this message]
2020-03-25 15:51   ` [PATCH 1/4] ubifs: remove broken lazytime support Sergei Shtylyov
2020-03-25 12:28 ` [PATCH 2/4] fs: avoid double-writing the inode on a lazytime expiration Christoph Hellwig
2020-03-25 15:01   ` Christoph Hellwig
2020-03-26  3:22   ` Dave Chinner
2020-03-26 17:01     ` Christoph Hellwig
2020-03-25 12:28 ` [PATCH 3/4] fs: don't call ->dirty_inode for lazytime timestamp updates Christoph Hellwig
2020-03-25 12:28 ` [PATCH 4/4] fs: clean up generic_update_time a bit Christoph Hellwig

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