Ping,
On 2017/8/8 19:09, Chao Yu wrote:
> During atomic committing, if we encounter -ENOMEM in revoke path, it's
> better to give a chance to retry revoking.
>
> Signed-off-by: Chao Yu <yuch...@huawei.com>
> ---
> fs/f2fs/segment.c | 10 ++++++++--
> 1 file changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
> index 45fb53411032..682ae68b9ef7 100644
> --- a/fs/f2fs/segment.c
> +++ b/fs/f2fs/segment.c
> @@ -213,9 +213,15 @@ static int __revoke_inmem_pages(struct inode *inode,
> struct node_info ni;
>
> trace_f2fs_commit_inmem_page(page, INMEM_REVOKE);
> -
> +retry:
> set_new_dnode(&dn, inode, NULL, NULL, 0);
> - if (get_dnode_of_data(&dn, page->index, LOOKUP_NODE)) {
> + err = get_dnode_of_data(&dn, page->index, LOOKUP_NODE);
> + if (err) {
> + if (err == -ENOMEM) {
> + congestion_wait(BLK_RW_ASYNC, HZ/50);
> + cond_resched();
> + goto retry;
> + }
> err = -EAGAIN;
> goto next;
> }
>
