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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2014-07-24 19:11:43 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2014-07-30 14:13:23 -0700 |
| commit | ea1aa12ca237149227ef68af50c9a1acf027b625 (patch) | |
| tree | 12ac50b385998668bc2978e0949897e071b43ea3 /fs | |
| parent | 6d99ba41a72c1213f2029e6fc66aa7943339b5db (diff) | |
| download | linux-ea1aa12ca237149227ef68af50c9a1acf027b625.tar.bz2 | |
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')
| -rw-r--r-- | fs/f2fs/f2fs.h | 1 | ||||
| -rw-r--r-- | fs/f2fs/file.c | 7 | ||||
| -rw-r--r-- | fs/f2fs/segment.h | 4 |
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; |