From: Emoly Liu <emoly.liu@intel.com>
Date: Tue, 15 Aug 2017 08:41:39 +0000 (+0800)
Subject: LU-9657 pfl: llapi_layout_comp_usei should handle non-pfl file
X-Git-Tag: 2.10.53~65
X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=commitdiff_plain;h=4f349ddde3567c19a522c707fc5ef2271016bfe6

LU-9657 pfl: llapi_layout_comp_usei should handle non-pfl file

This patch improves llapi_layout_comp_use() to treat non-composite
file as single component file. When doing "is composite" check,
"1" is returned when LLAPI_LAYOUT_COMP_USE_NEXT/PREV is specified.

Signed-off-by: Emoly Liu <emoly.liu@intel.com>
Change-Id: I3ba4f07ec843d9b61273af331060d5f8827c2f8b
Reviewed-on: https://review.whamcloud.com/27865
Tested-by: Jenkins
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Fan Yong <fan.yong@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
---

diff --git a/lustre/utils/liblustreapi_layout.c b/lustre/utils/liblustreapi_layout.c
index 5df0ae6..f02bf44 100644
--- a/lustre/utils/liblustreapi_layout.c
+++ b/lustre/utils/liblustreapi_layout.c
@@ -1841,8 +1841,11 @@ int llapi_layout_comp_use(struct llapi_layout *layout,
 		return -1;
 
 	if (!layout->llot_is_composite) {
-		errno = EINVAL;
-		return -1;
+		if (pos == LLAPI_LAYOUT_COMP_USE_FIRST ||
+		    pos == LLAPI_LAYOUT_COMP_USE_LAST)
+			return 0;
+		errno = ENOENT;
+		return 1;
 	}
 
 	head = list_entry(layout->llot_comp_list.next, typeof(*head), llc_list);