On 2017/2/14 10:06, Jaegeuk Kim wrote:
> We've not seen this buggy case for a long time, so it's time to avoid this
> unnecessary get_node_info() call which reading NAT page to cache nat entry.
>
> Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org>
> ---
> fs/f2fs/node.c | 11 +++++------
> 1 file changed, 5 insertions(+), 6 deletions(-)
>
> diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
> index e001d084667f..b63bdb85ad66 100644
> --- a/fs/f2fs/node.c
> +++ b/fs/f2fs/node.c
> @@ -1033,7 +1033,7 @@ struct page *new_node_page(struct dnode_of_data *dn,
> unsigned int ofs, struct page *ipage)
> {
> struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
> - struct node_info old_ni, new_ni;
> + struct node_info new_ni;
> struct page *page;
> int err;
>
> @@ -1049,12 +1049,11 @@ struct page *new_node_page(struct dnode_of_data *dn,
> goto fail;
> }
>
> - get_node_info(sbi, dn->nid, &old_ni);
> -
> - /* Reinitialize old_ni with new node page */
> - f2fs_bug_on(sbi, old_ni.blk_addr != NULL_ADDR);
What about keeping get_node_info covered with CONFIG_F2FS_CHECK_FS for
consistence as we just introduce two new free nid caches, I think it will be
helpful for detecting bugs of these new codes.
Thanks,
> - new_ni = old_ni;
> + new_ni.nid = dn->nid;
> new_ni.ino = dn->inode->i_ino;
> + new_ni.blk_addr = NULL_ADDR;
> + new_ni.flag = 0;
> + new_ni.version = 0;
> set_node_addr(sbi, &new_ni, NEW_ADDR, false);
>
> f2fs_wait_on_page_writeback(page, NODE, true);
>
