From 54b591dfda1f5ab0bc2a9ce1bee5364110168777 Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Tue, 29 Apr 2014 17:28:32 +0900 Subject: f2fs: split grab_cache_page and wait_on_page_writeback for node pages This patch splits grab_cache_page_write_begin into grab_cache_page and wait_on_page_writeback for node pages. This patch intends to enhance the latency to get node pages by alleviating unnecessary wait_on_page_writeback. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/inline.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'fs/f2fs/inline.c') diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c index d215dbb09f07..8bf34f052f67 100644 --- a/fs/f2fs/inline.c +++ b/fs/f2fs/inline.c @@ -156,6 +156,7 @@ int f2fs_write_inline_data(struct inode *inode, return err; ipage = dn.inode_page; + f2fs_wait_on_page_writeback(ipage, NODE); zero_user_segment(ipage, INLINE_DATA_OFFSET, INLINE_DATA_OFFSET + MAX_INLINE_DATA); src_addr = kmap(page); @@ -188,6 +189,8 @@ void truncate_inline_data(struct inode *inode, u64 from) if (IS_ERR(ipage)) return; + f2fs_wait_on_page_writeback(ipage, NODE); + zero_user_segment(ipage, INLINE_DATA_OFFSET + from, INLINE_DATA_OFFSET + MAX_INLINE_DATA); set_page_dirty(ipage); @@ -218,6 +221,8 @@ process_inline: ipage = get_node_page(sbi, inode->i_ino); f2fs_bug_on(IS_ERR(ipage)); + f2fs_wait_on_page_writeback(ipage, NODE); + src_addr = inline_data_addr(npage); dst_addr = inline_data_addr(ipage); memcpy(dst_addr, src_addr, MAX_INLINE_DATA); @@ -229,6 +234,7 @@ process_inline: if (f2fs_has_inline_data(inode)) { ipage = get_node_page(sbi, inode->i_ino); f2fs_bug_on(IS_ERR(ipage)); + f2fs_wait_on_page_writeback(ipage, NODE); zero_user_segment(ipage, INLINE_DATA_OFFSET, INLINE_DATA_OFFSET + MAX_INLINE_DATA); clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA); -- cgit v1.2.3