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authorJaegeuk Kim <jaegeuk@kernel.org>2016-07-01 04:49:15 +0300
committerJaegeuk Kim <jaegeuk@kernel.org>2016-07-08 20:33:29 +0300
commit237c0790e54020d522b8fd23097e8dcafb4e331d (patch)
tree57af2ddd9bff9382d6330ca894497d3fb37bfb2e /fs/f2fs/inline.c
parentfe76b796fc5194cc3d57265002e3a748566d073f (diff)
downloadlinux-237c0790e54020d522b8fd23097e8dcafb4e331d.tar.xz
f2fs: call SetPageUptodate if needed
SetPageUptodate() issues memory barrier, resulting in performance degrdation. Let's avoid that. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/inline.c')
-rw-r--r--fs/f2fs/inline.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
index e10e958250ff..2cd0edcc4ebc 100644
--- a/fs/f2fs/inline.c
+++ b/fs/f2fs/inline.c
@@ -59,7 +59,8 @@ void read_inline_data(struct page *page, struct page *ipage)
memcpy(dst_addr, src_addr, MAX_INLINE_DATA);
flush_dcache_page(page);
kunmap_atomic(dst_addr);
- SetPageUptodate(page);
+ if (!PageUptodate(page))
+ SetPageUptodate(page);
}
bool truncate_inline_inode(struct page *ipage, u64 from)
@@ -97,7 +98,8 @@ int f2fs_read_inline_data(struct inode *inode, struct page *page)
else
read_inline_data(page, ipage);
- SetPageUptodate(page);
+ if (!PageUptodate(page))
+ SetPageUptodate(page);
f2fs_put_page(ipage, 1);
unlock_page(page);
return 0;
@@ -370,7 +372,8 @@ static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage,
NR_INLINE_DENTRY * F2FS_SLOT_LEN);
kunmap_atomic(dentry_blk);
- SetPageUptodate(page);
+ if (!PageUptodate(page))
+ SetPageUptodate(page);
set_page_dirty(page);
/* clear inline dir and flag after data writeback */