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]
Date:	Wed, 18 Apr 2012 00:53:38 +0800
From:	Zheng Liu <gnehzuil.liu@...il.com>
To:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-ext4@...r.kernel.org
Cc:	Zheng Liu <wenqing.lz@...bao.com>
Subject: [RFC][PATCH 3/3] ext4: add FALLOC_FL_NO_HIDE_STALE support

From: Zheng Liu <wenqing.lz@...bao.com>

When FALLOC_FL_NO_HIDE_STALE flag is marked, we create an initialized
extent directly.

Signed-off-by: Zheng Liu <wenqing.lz@...bao.com>
---
 fs/ext4/extents.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 1421938..efb5150 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -4291,7 +4291,7 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
 		return -EOPNOTSUPP;
 
 	/* Return error if mode is not supported */
-	if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))
+	if (mode & ~FALLOC_FL_SUPPORTED_FLAGS)
 		return -EOPNOTSUPP;
 
 	if (mode & FALLOC_FL_PUNCH_HOLE)
@@ -4316,7 +4316,10 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
 		trace_ext4_fallocate_exit(inode, offset, max_blocks, ret);
 		return ret;
 	}
-	flags = EXT4_GET_BLOCKS_CREATE_UNINIT_EXT;
+	if (mode & FALLOC_FL_NO_HIDE_STALE)
+		flags = EXT4_GET_BLOCKS_CREATE;
+	else
+		flags = EXT4_GET_BLOCKS_CREATE_UNINIT_EXT;
 	if (mode & FALLOC_FL_KEEP_SIZE)
 		flags |= EXT4_GET_BLOCKS_KEEP_SIZE;
 	/*
-- 
1.7.4.1

--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Powered by blists - more mailing lists