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| author |   Lai Siyao <lai.siyao@intel.com> | 2015-02-01 21:52:17 -0500 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-02-07 17:32:34 +0800 |
| commit | c67587a74847a27965ca1c6a4362c3b39e9943e1 (patch) | |
| tree | e808c2718ab3c064ec378d0f194b0e465eefd1a0 /drivers/staging | |
| parent | staging/lustre/llite: Add exception entry check after radix_tree (diff) | |
| download | linux-dev-c67587a74847a27965ca1c6a4362c3b39e9943e1.tar.xz linux-dev-c67587a74847a27965ca1c6a4362c3b39e9943e1.zip | |
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 <lai.siyao@intel.com>
Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5461
Reviewed-on: http://review.whamcloud.com/11450
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/lustre/lustre/llite/dir.c | 5 |
1 files changed, 4 insertions, 1 deletions
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); |