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authorJaegeuk Kim <jaegeuk@kernel.org>2014-10-24 06:48:09 +0400
committerJaegeuk Kim <jaegeuk@kernel.org>2014-11-05 04:34:11 +0300
commitb3d208f96d6bb21247108a956dead6a028d5cdb2 (patch)
tree0adfa5781bae898208c62a94c6087322f16a94be /include/linux/f2fs_fs.h
parent1f7732fe6cc0c37befc74cef1d289cd2272b7a5c (diff)
downloadlinux-b3d208f96d6bb21247108a956dead6a028d5cdb2.tar.xz
f2fs: revisit inline_data to avoid data races and potential bugs
This patch simplifies the inline_data usage with the following rule. 1. inline_data is set during the file creation. 2. If new data is requested to be written ranges out of inline_data, f2fs converts that inode permanently. 3. There is no cases which converts non-inline_data inode to inline_data. 4. The inline_data flag should be changed under inode page lock. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'include/linux/f2fs_fs.h')
-rw-r--r--include/linux/f2fs_fs.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
index 63f8303b79ba..cc1064f3153f 100644
--- a/include/linux/f2fs_fs.h
+++ b/include/linux/f2fs_fs.h
@@ -172,6 +172,7 @@ struct f2fs_extent {
#define F2FS_INLINE_XATTR 0x01 /* file inline xattr flag */
#define F2FS_INLINE_DATA 0x02 /* file inline data flag */
#define F2FS_INLINE_DENTRY 0x04 /* file inline dentry flag */
+#define F2FS_DATA_EXIST 0x08 /* file inline data exist flag */
#define MAX_INLINE_DATA (sizeof(__le32) * (DEF_ADDRS_PER_INODE - \
F2FS_INLINE_XATTR_ADDRS - 1))