linux-kernel - [PATCH take 2 01/28] VFS: introduce writeback_inodes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1210070159-22794-2-git-send-email-Artem.Bityutskiy@nokia.com>
Date:	Tue,  6 May 2008 13:35:32 +0300
From:	Artem Bityutskiy <Artem.Bityutskiy@...ia.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Adrian Hunter <ext-adrian.hunter@...ia.com>,
	Artem Bityutskiy <Artem.Bityutskiy@...ia.com>
Subject: [PATCH take 2 01/28] VFS: introduce writeback_inodes_sb()

Let file systems to writeback their pages and inodes when needed. This
is needed for UBIFS budgeting sub-system because it has to force
write-back from time to time.

Note, it cannot be called if one of the dirty pages is locked by
the caller, otherwise it'll deadlock.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@...ia.com>
Signed-off-by: Adrian Hunter <ext-adrian.hunter@...ia.com>
---
 fs/fs-writeback.c         |    8 ++++++++
 include/linux/writeback.h |    1 +
 2 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 0655767..4591270 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -573,6 +573,14 @@ void sync_inodes_sb(struct super_block *sb, int wait)
 	spin_unlock(&inode_lock);
 }
 
+void writeback_inodes_sb(struct super_block *sb, struct writeback_control *wbc)
+{
+	spin_lock(&inode_lock);
+	sync_sb_inodes(sb, wbc);
+	spin_unlock(&inode_lock);
+}
+EXPORT_SYMBOL_GPL(writeback_inodes_sb);
+
 /*
  * Rather lame livelock avoidance.
  */
diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index b7b3362..0083a0a 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -71,6 +71,7 @@ struct writeback_control {
 void writeback_inodes(struct writeback_control *wbc);
 int inode_wait(void *);
 void sync_inodes_sb(struct super_block *, int wait);
+void writeback_inodes_sb(struct super_block *sb, struct writeback_control *wbc);
 void sync_inodes(int wait);
 
 /* writeback.h requires fs.h; it, too, is not included from here. */
-- 
1.5.4.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/