From patchwork Tue Apr 17 16:53:38 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [RFC,3/3] ext4: add FALLOC_FL_NO_HIDE_STALE support From: Zheng Liu X-Patchwork-Id: 153249 Message-Id: <1334681618-9452-4-git-send-email-wenqing.lz@taobao.com> To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org Cc: Zheng Liu Date: Wed, 18 Apr 2012 00:53:38 +0800 From: Zheng Liu When FALLOC_FL_NO_HIDE_STALE flag is marked, we create an initialized extent directly. Signed-off-by: Zheng Liu --- 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; /*