Eric Lee / smarc-ti-linux-kernel

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Commit ea1aa12ca237149227ef68af50c9a1acf027b625

Authored by Jaegeuk Kim
1 parent 6d99ba41a7
Exists in ti-lsk-linux-4.1.y and in 10 other branches dlt-processor-sdk-linux-03.00.00.04, processor-sdk-linux-02.00.01, smarc-ti-lsk-linux-4.1.y, smarct3x-processor-sdk-04.01.00.06, smarct3x-processor-sdk-linux-02.00.01, smarct3x-processor-sdk-linux-03.00.00.04, smarct4x-800-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-04.01.00.06, smarct4x-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-linux-03.00.00.04

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>

Showing 3 changed files with 12 additions and 0 deletions Side-by-side Diff

... ... @@ -998,6 +998,7 @@
998 998 FI_INLINE_DATA, /* used for inline data*/
999 999 FI_APPEND_WRITE, /* inode has appended data */
1000 1000 FI_UPDATE_WRITE, /* inode has in-place-update data */
  1001 + FI_NEED_IPU, /* used fo ipu for fdatasync */
1001 1002 };
1002 1003  
1003 1004 static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
... ... @@ -127,7 +127,14 @@
127 127 return 0;
128 128  
129 129 trace_f2fs_sync_file_enter(inode);
  130 +
  131 + /* if fdatasync is triggered, let's do in-place-update */
  132 + if (datasync)
  133 + set_inode_flag(fi, FI_NEED_IPU);
  134 +
130 135 ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
  136 + if (datasync)
  137 + clear_inode_flag(fi, FI_NEED_IPU);
131 138 if (ret) {
132 139 trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret);
133 140 return ret;
... ... @@ -486,6 +486,10 @@
486 486 if (S_ISDIR(inode->i_mode))
487 487 return false;
488 488  
  489 + /* this is only set during fdatasync */
  490 + if (is_inode_flag_set(F2FS_I(inode), FI_NEED_IPU))
  491 + return true;
  492 +
489 493 switch (SM_I(sbi)->ipu_policy) {
490 494 case F2FS_IPU_FORCE:
491 495 return true;