From: Kamal Mostafa <kamal@canonical.com>
To: Jan Kara <jack@suse.cz>, Alexander Viro <viro@zeniv.linux.org.uk>,
Andreas Dilger <adilger.kernel@dilger.ca>,
Matthew Wilcox <matthew@wil.cx>,
Randy Dunlap <rdunlap@xenotime.net>, Theodore Tso <tytso@mit.edu>
Cc: linux-doc@vger.kernel.org, linux-ext4@vger.kernel.org,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
Surbhi Palande <csurbhi@gmail.com>,
Valerie Aurora <val@vaaconsulting.com>,
Kamal Mostafa <kamal@canonical.com>,
Christopher Chaltain <christopher.chaltain@canonical.com>,
"Peter M. Petrakis" <peter.petrakis@canonical.com>,
Mikulas Patocka <mpatocka@redhat.com>
Subject: [PATCH v2 7/7] Documentation: Correct s_umount state for freeze_fs/unfreeze_fs
Date: Thu, 8 Dec 2011 10:04:37 -0800 [thread overview]
Message-ID: <1323367477-21685-8-git-send-email-kamal@canonical.com> (raw)
In-Reply-To: <1323367477-21685-1-git-send-email-kamal@canonical.com>
From: Valerie Aurora <val@vaaconsulting.com>
freeze_fs/unfreeze_fs ops are called with s_umount held for write, not read.
BugLink: https://bugs.launchpad.net/bugs/897421
Signed-off-by: Valerie Aurora <val@vaaconsulting.com>
Cc: Kamal Mostafa <kamal@canonical.com>
Tested-by: Peter M. Petrakis <peter.petrakis@canonical.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
Documentation/filesystems/Locking | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking
index d819ba1..7e46a94 100644
--- a/Documentation/filesystems/Locking
+++ b/Documentation/filesystems/Locking
@@ -134,8 +134,8 @@ evict_inode:
put_super: write
write_super: read
sync_fs: read
-freeze_fs: read
-unfreeze_fs: read
+freeze_fs: write
+unfreeze_fs: write
statfs: maybe(read) (see below)
remount_fs: write
umount_begin: no
--
1.7.5.4
next prev parent reply other threads:[~2011-12-08 18:05 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-08 18:04 [PATCH v2 0/7] fix s_umount thaw/write and journal deadlock Kamal Mostafa
2011-12-08 18:04 ` [PATCH v2 1/7] Adding support to freeze and unfreeze a journal Kamal Mostafa
2012-01-10 20:20 ` Eric Sandeen
2012-01-10 21:31 ` Jan Kara
2012-01-10 21:55 ` Surbhi Palande
[not found] ` <CAMBkX3eVeKSmEzmYTe6Oe_D6kAMQTL5LYoi1-Axj7CcrM85Pow@mail.gmail.com>
2012-01-11 0:04 ` Jan Kara
2012-01-11 0:13 ` Surbhi Palande
2012-01-11 0:51 ` Jan Kara
2012-01-11 3:08 ` Eric Sandeen
2012-01-10 22:00 ` Surbhi Palande
2011-12-08 18:04 ` [PATCH v2 2/7] Freeze and thaw the journal on ext4 freeze Kamal Mostafa
2012-01-06 0:32 ` Jan Kara
2011-12-08 18:04 ` [PATCH v2 3/7] VFS: Fix s_umount thaw/write deadlock Kamal Mostafa
2012-01-06 1:50 ` Jan Kara
2011-12-08 18:04 ` [PATCH v2 4/7] VFS: Rename and refactor writeback_inodes_sb_if_idle Kamal Mostafa
2011-12-13 3:34 ` Miao Xie
2011-12-15 7:10 ` Miao Xie
2011-12-16 20:48 ` Kamal Mostafa
2012-01-06 0:33 ` Jan Kara
2011-12-08 18:04 ` [PATCH v2 5/7] VFS: Avoid read-write deadlock in try_to_writeback_inodes_sb Kamal Mostafa
2012-01-06 0:35 ` Jan Kara
2012-01-11 20:29 ` Kamal Mostafa
2012-01-12 15:53 ` Mikulas Patocka
2011-12-08 18:04 ` [PATCH v2 6/7] VFS: Document s_frozen state through freeze_super Kamal Mostafa
2012-01-06 0:36 ` Jan Kara
2011-12-08 18:04 ` Kamal Mostafa [this message]
2012-01-06 0:36 ` [PATCH v2 7/7] Documentation: Correct s_umount state for freeze_fs/unfreeze_fs Jan Kara
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