From: Lai Siyao Date: Mon, 2 Feb 2015 02:52:17 +0000 (-0500) Subject: staging/lustre/llite: don't add to page cache upon failure X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=c67587a74847a27965ca1c6a4362c3b39e9943e1;p=deliverable%2Flinux.git staging/lustre/llite: don't add to page cache upon failure Reading directory pages may fail on MDS, in this case client should not cache a non-up-to-date directory page, because it will cause a later read on the same page fail. Signed-off-by: Lai Siyao Signed-off-by: Oleg Drokin Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5461 Reviewed-on: http://review.whamcloud.com/11450 Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/lustre/lustre/llite/dir.c b/drivers/staging/lustre/lustre/llite/dir.c index 69a4a63e1d8f..a18201913273 100644 --- a/drivers/staging/lustre/lustre/llite/dir.c +++ b/drivers/staging/lustre/lustre/llite/dir.c @@ -183,7 +183,10 @@ static int ll_dir_filler(void *_hash, struct page *page0) op_data->op_offset = hash; rc = md_readpage(exp, op_data, page_pool, &request); ll_finish_md_op_data(op_data); - if (rc == 0) { + if (rc < 0) { + /* page0 is special, which was added into page cache early */ + delete_from_page_cache(page0); + } else if (rc == 0) { body = req_capsule_server_get(&request->rq_pill, &RMF_MDT_BODY); /* Checked by mdc_readpage() */ LASSERT(body != NULL);