tree f56763175e0fbee1e2079c9a330f3d73f971bc5c
parent 58c410351eba3d24f741c85a0eb9eaf15c94047d
author Jaegeuk Kim <jaegeuk.kim@samsung.com> 1395310208 +0900
committer Jaegeuk Kim <jaegeuk.kim@samsung.com> 1395321011 +0900

f2fs: introduce fi->i_sem to protect fi's info

This patch introduces fi->i_sem to protect fi's info that includes xattr_ver,
pino, i_nlink.
This enables to remove i_mutex during f2fs_sync_file, resulting in performance
improvement when a number of fsync calls are triggered from many concurrent
threads.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>