From: Jan Kara <jack@suse.cz>
To: linux-fsdevel@vger.kernel.org
Cc: Dave Kleikamp <shaggy@kernel.org>,
jfs-discussion@lists.sourceforge.net, tytso@mit.edu,
Jeff Mahoney <jeffm@suse.de>, Mark Fasheh <mfasheh@suse.com>,
Dave Chinner <david@fromorbit.com>,
reiserfs-devel@vger.kernel.org, xfs@oss.sgi.com,
cluster-devel@redhat.com, Jan Kara <jack@suse.cz>,
linux-ext4@vger.kernel.org,
Steven Whitehouse <swhiteho@redhat.com>,
ocfs2-devel@oss.oracle.com, viro@zeniv.linux.org.uk
Subject: [PATCH] ext4: Avoid lock inversion between i_mmap_mutex and transaction start
Date: Fri, 10 Oct 2014 16:23:13 +0200 [thread overview]
Message-ID: <1412951028-4085-9-git-send-email-jack@suse.cz> (raw)
In-Reply-To: <1412951028-4085-1-git-send-email-jack@suse.cz>
When DAX is enabled, it uses i_mmap_mutex as a protection against
truncate during page fault. This inevitably forces i_mmap_mutex to rank
outside of a transaction start and thus we have to avoid calling
pagecache purging operations when transaction is started.
Signed-off-by: Jan Kara <jack@suse.cz>
---
fs/ext4/inode.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 8a064734e6eb..494a8645d63e 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3631,13 +3631,19 @@ int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length)
if (IS_SYNC(inode))
ext4_handle_sync(handle);
- /* Now release the pages again to reduce race window */
+ inode->i_mtime = inode->i_ctime = ext4_current_time(inode);
+ ext4_mark_inode_dirty(handle, inode);
+ ext4_journal_stop(handle);
+
+ /*
+ * Now release the pages again to reduce race window. This has to happen
+ * outside of a transaction to avoid lock inversion on i_mmap_mutex
+ * when DAX is enabled.
+ */
if (last_block_offset > first_block_offset)
truncate_pagecache_range(inode, first_block_offset,
last_block_offset);
-
- inode->i_mtime = inode->i_ctime = ext4_current_time(inode);
- ext4_mark_inode_dirty(handle, inode);
+ goto out_dio;
out_stop:
ext4_journal_stop(handle);
out_dio:
--
1.8.1.4
WARNING: multiple messages have this Message-ID (diff)
From: Jan Kara <jack@suse.cz>
To: linux-fsdevel@vger.kernel.org
Cc: Dave Kleikamp <shaggy@kernel.org>,
jfs-discussion@lists.sourceforge.net, tytso@mit.edu,
Jeff Mahoney <jeffm@suse.de>, Mark Fasheh <mfasheh@suse.com>,
reiserfs-devel@vger.kernel.org, xfs@oss.sgi.com,
cluster-devel@redhat.com, Joel Becker <jlbec@evilplan.org>,
Jan Kara <jack@suse.cz>,
linux-ext4@vger.kernel.org,
Steven Whitehouse <swhiteho@redhat.com>,
ocfs2-devel@oss.oracle.com, viro@zeniv.linux.org.uk
Subject: [PATCH] ext4: Avoid lock inversion between i_mmap_mutex and transaction start
Date: Fri, 10 Oct 2014 16:23:13 +0200 [thread overview]
Message-ID: <1412951028-4085-9-git-send-email-jack@suse.cz> (raw)
In-Reply-To: <1412951028-4085-1-git-send-email-jack@suse.cz>
When DAX is enabled, it uses i_mmap_mutex as a protection against
truncate during page fault. This inevitably forces i_mmap_mutex to rank
outside of a transaction start and thus we have to avoid calling
pagecache purging operations when transaction is started.
Signed-off-by: Jan Kara <jack@suse.cz>
---
fs/ext4/inode.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 8a064734e6eb..494a8645d63e 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3631,13 +3631,19 @@ int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length)
if (IS_SYNC(inode))
ext4_handle_sync(handle);
- /* Now release the pages again to reduce race window */
+ inode->i_mtime = inode->i_ctime = ext4_current_time(inode);
+ ext4_mark_inode_dirty(handle, inode);
+ ext4_journal_stop(handle);
+
+ /*
+ * Now release the pages again to reduce race window. This has to happen
+ * outside of a transaction to avoid lock inversion on i_mmap_mutex
+ * when DAX is enabled.
+ */
if (last_block_offset > first_block_offset)
truncate_pagecache_range(inode, first_block_offset,
last_block_offset);
-
- inode->i_mtime = inode->i_ctime = ext4_current_time(inode);
- ext4_mark_inode_dirty(handle, inode);
+ goto out_dio;
out_stop:
ext4_journal_stop(handle);
out_dio:
--
1.8.1.4
_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs
WARNING: multiple messages have this Message-ID (diff)
From: Jan Kara <jack@suse.cz>
To: linux-fsdevel@vger.kernel.org
Cc: Dave Kleikamp <shaggy@kernel.org>,
jfs-discussion@lists.sourceforge.net, tytso@mit.edu,
Jeff Mahoney <jeffm@suse.de>, Mark Fasheh <mfasheh@suse.com>,
Dave Chinner <david@fromorbit.com>,
reiserfs-devel@vger.kernel.org, xfs@oss.sgi.com,
cluster-devel@redhat.com, Jan Kara <jack@suse.cz>,
linux-ext4@vger.kernel.org,
Steven Whitehouse <swhiteho@redhat.com>,
ocfs2-devel@oss.oracle.com, viro@zeniv.linux.org.uk
Subject: [Ocfs2-devel] [PATCH] ext4: Avoid lock inversion between i_mmap_mutex and transaction start
Date: Fri, 10 Oct 2014 16:23:13 +0200 [thread overview]
Message-ID: <1412951028-4085-9-git-send-email-jack@suse.cz> (raw)
In-Reply-To: <1412951028-4085-1-git-send-email-jack@suse.cz>
When DAX is enabled, it uses i_mmap_mutex as a protection against
truncate during page fault. This inevitably forces i_mmap_mutex to rank
outside of a transaction start and thus we have to avoid calling
pagecache purging operations when transaction is started.
Signed-off-by: Jan Kara <jack@suse.cz>
---
fs/ext4/inode.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 8a064734e6eb..494a8645d63e 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3631,13 +3631,19 @@ int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length)
if (IS_SYNC(inode))
ext4_handle_sync(handle);
- /* Now release the pages again to reduce race window */
+ inode->i_mtime = inode->i_ctime = ext4_current_time(inode);
+ ext4_mark_inode_dirty(handle, inode);
+ ext4_journal_stop(handle);
+
+ /*
+ * Now release the pages again to reduce race window. This has to happen
+ * outside of a transaction to avoid lock inversion on i_mmap_mutex
+ * when DAX is enabled.
+ */
if (last_block_offset > first_block_offset)
truncate_pagecache_range(inode, first_block_offset,
last_block_offset);
-
- inode->i_mtime = inode->i_ctime = ext4_current_time(inode);
- ext4_mark_inode_dirty(handle, inode);
+ goto out_dio;
out_stop:
ext4_journal_stop(handle);
out_dio:
--
1.8.1.4
WARNING: multiple messages have this Message-ID (diff)
From: Jan Kara <jack@suse.cz>
To: cluster-devel.redhat.com
Subject: [Cluster-devel] [PATCH] ext4: Avoid lock inversion between i_mmap_mutex and transaction start
Date: Fri, 10 Oct 2014 16:23:13 +0200 [thread overview]
Message-ID: <1412951028-4085-9-git-send-email-jack@suse.cz> (raw)
In-Reply-To: <1412951028-4085-1-git-send-email-jack@suse.cz>
When DAX is enabled, it uses i_mmap_mutex as a protection against
truncate during page fault. This inevitably forces i_mmap_mutex to rank
outside of a transaction start and thus we have to avoid calling
pagecache purging operations when transaction is started.
Signed-off-by: Jan Kara <jack@suse.cz>
---
fs/ext4/inode.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 8a064734e6eb..494a8645d63e 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3631,13 +3631,19 @@ int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length)
if (IS_SYNC(inode))
ext4_handle_sync(handle);
- /* Now release the pages again to reduce race window */
+ inode->i_mtime = inode->i_ctime = ext4_current_time(inode);
+ ext4_mark_inode_dirty(handle, inode);
+ ext4_journal_stop(handle);
+
+ /*
+ * Now release the pages again to reduce race window. This has to happen
+ * outside of a transaction to avoid lock inversion on i_mmap_mutex
+ * when DAX is enabled.
+ */
if (last_block_offset > first_block_offset)
truncate_pagecache_range(inode, first_block_offset,
last_block_offset);
-
- inode->i_mtime = inode->i_ctime = ext4_current_time(inode);
- ext4_mark_inode_dirty(handle, inode);
+ goto out_dio;
out_stop:
ext4_journal_stop(handle);
out_dio:
--
1.8.1.4
next prev parent reply other threads:[~2014-10-10 14:23 UTC|newest]
Thread overview: 181+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-10 14:23 [PATCH 0/2 v2] Fix data corruption when blocksize < pagesize for mmapped data Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH 1/2 RESEND] bdi: Fix hung task on sync Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] block: free q->flush_rq in blk_init_allocated_queue error paths Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 15:19 ` Dave Jones
2014-10-10 15:19 ` [Cluster-devel] " Dave Jones
2014-10-10 15:32 ` Jan Kara
2014-10-10 15:32 ` [Cluster-devel] " Jan Kara
2014-10-10 15:32 ` [Ocfs2-devel] " Jan Kara
2014-10-10 15:32 ` Jan Kara
2014-10-10 14:23 ` [PATCH] block: improve rq_affinity placement Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] block: Make rq_affinity = 1 work as expected Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] block: strict rq_affinity Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] ext3: Fix deadlock in data=journal mode when fs is frozen Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] ext3: Speedup WB_SYNC_ALL pass Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` Jan Kara [this message]
2014-10-10 14:23 ` [Cluster-devel] [PATCH] ext4: Avoid lock inversion between i_mmap_mutex and transaction start Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH 1/2] ext4: Don't check quota format when there are no quota files Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH 1/2] ext4: Fix block zeroing when punching holes in indirect block files Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] ext4: Fix buffer double free in ext4_alloc_branch() Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` [PATCH] ext4: Fix jbd2 warning under heavy xattr load Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] ext4: Fix zeroing of page during writeback Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] ext4: Remove orphan list handling Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] ext4: Speedup WB_SYNC_ALL pass Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` [PATCH for 3.14-stable] fanotify: fix double free of pending permission events Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] fs: Avoid userspace mounting anon_inodefs filesystem Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH 1/2] jbd2: Avoid pointless scanning of checkpoint lists Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] jbd2: Optimize jbd2_log_do_checkpoint() a bit Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] lockdep: Dump info via tracing Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] mm: Fixup pagecache_isize_extended() definitions for !CONFIG_MMU Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] ncpfs: fix rmdir returns Device or resource busy Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] ocfs2: Fix quota file corruption Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH 1/2] printk: Debug patch1 Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] printk: debug: Slow down printing to 9600 bauds Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] printk: enable interrupts before calling console_trylock_for_printk() Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] quota: Fix race between dqput() and dquot_scan_active() Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] scsi: Keep interrupts disabled while submitting requests Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] sync: don't block the flusher thread waiting on IO Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] timer: Fix lock inversion between hrtimer_bases.lock and scheduler locks Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] udf: Avoid infinite loop when processing indirect ICBs Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] udf: Print error when inode is loaded Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] vfs: Allocate anon_inode_inode in anon_inode_init() Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH 1/2] vfs: Fix data corruption when blocksize < pagesize for mmaped data Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH RESEND] vfs: Return EINVAL for default SEEK_HOLE, SEEK_DATA implementation Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] writeback: plug writeback at a high level Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH] x86: Fixup lockdep complaint caused by io apic code Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH 2/2 RESEND] bdi: Avoid oops on device removal Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH 2/2] ext3: Don't check quota format when there are no quota files Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH 2/2] ext4: Fix hole punching for files with indirect blocks Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH 2/2] ext4: Fix mmap data corruption when blocksize < pagesize Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH 2/2] jbd2: Simplify calling convention around __jbd2_journal_clean_checkpoint_list Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
2014-10-10 14:23 ` [PATCH 2/2] printk: Debug patch 2 Jan Kara
2014-10-10 14:23 ` [Cluster-devel] " Jan Kara
2014-10-10 14:23 ` [Ocfs2-devel] " Jan Kara
2014-10-10 14:23 ` Jan Kara
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