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authorJaegeuk Kim <jaegeuk@kernel.org>2014-07-24 19:11:43 -0700
committerJaegeuk Kim <jaegeuk@kernel.org>2014-07-30 14:13:23 -0700
commitea1aa12ca237149227ef68af50c9a1acf027b625 (patch)
tree12ac50b385998668bc2978e0949897e071b43ea3 /fs/f2fs
parent6d99ba41a72c1213f2029e6fc66aa7943339b5db (diff)
downloadblackbird-obmc-linux-ea1aa12ca237149227ef68af50c9a1acf027b625.tar.gz
blackbird-obmc-linux-ea1aa12ca237149227ef68af50c9a1acf027b625.zip
f2fs: enable in-place-update for fdatasync
This patch enforces in-place-updates only when fdatasync is requested. If we adopt this in-place-updates for the fdatasync, we can skip to write the recovery information. Reviewed-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/f2fs.h1
-rw-r--r--fs/f2fs/file.c7
-rw-r--r--fs/f2fs/segment.h4
3 files changed, 12 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index ab3602576fb2..8f8685e16863 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -998,6 +998,7 @@ enum {
FI_INLINE_DATA, /* used for inline data*/
FI_APPEND_WRITE, /* inode has appended data */
FI_UPDATE_WRITE, /* inode has in-place-update data */
+ FI_NEED_IPU, /* used fo ipu for fdatasync */
};
static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 9b888fbf08b6..95501358932c 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -127,7 +127,14 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
return 0;
trace_f2fs_sync_file_enter(inode);
+
+ /* if fdatasync is triggered, let's do in-place-update */
+ if (datasync)
+ set_inode_flag(fi, FI_NEED_IPU);
+
ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
+ if (datasync)
+ clear_inode_flag(fi, FI_NEED_IPU);
if (ret) {
trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret);
return ret;
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index ee5c75e08d9c..55973f7b0330 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -486,6 +486,10 @@ static inline bool need_inplace_update(struct inode *inode)
if (S_ISDIR(inode->i_mode))
return false;
+ /* this is only set during fdatasync */
+ if (is_inode_flag_set(F2FS_I(inode), FI_NEED_IPU))
+ return true;
+
switch (SM_I(sbi)->ipu_policy) {
case F2FS_IPU_FORCE:
return true;
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