From: John L. Hammond <john.hammond@intel.com>
Date: Wed, 8 May 2013 02:46:39 +0000 (-0500)
Subject: LU-3268 lod: return root LOV EA in little-endian
X-Git-Tag: 2.4.53~74
X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=commitdiff_plain;h=4a1f10ef775b2b1a4631ee2f12bff3330b941e45

LU-3268 lod: return root LOV EA in little-endian

In lod_xattr_get() when constructing LOV EA to return for the
filesystem root, store members in little-endian byte order for
consistency with EAs from disk.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Change-Id: Id76da869e14ff71b8af21fe2b1d66abd54da0a2d
Reviewed-on: http://review.whamcloud.com/6285
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Li Wei <wei.g.li@intel.com>
Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
---

diff --git a/lustre/lod/lod_object.c b/lustre/lod/lod_object.c
index e3180e2..b237401 100644
--- a/lustre/lod/lod_object.c
+++ b/lustre/lod/lod_object.c
@@ -387,15 +387,19 @@ static int lod_xattr_get(const struct lu_env *env, struct dt_object *dt,
 		struct lov_desc    *desc = &dev->lod_desc;
 
 		if (buf->lb_buf == NULL) {
-			rc = sizeof(struct lov_user_md_v1);
-		} else if (buf->lb_len >= sizeof(struct lov_user_md_v1)) {
-			lum->lmm_magic = LOV_USER_MAGIC_V1;
+			rc = sizeof(*lum);
+		} else if (buf->lb_len >= sizeof(*lum)) {
+			lum->lmm_magic = cpu_to_le32(LOV_USER_MAGIC_V1);
 			lmm_oi_set_seq(&lum->lmm_oi, FID_SEQ_LOV_DEFAULT);
-			lum->lmm_pattern = desc->ld_pattern;
-			lum->lmm_stripe_size = desc->ld_default_stripe_size;
-			lum->lmm_stripe_count = desc->ld_default_stripe_count;
-			lum->lmm_stripe_offset = desc->ld_default_stripe_offset;
-			rc = sizeof(struct lov_user_md_v1);
+			lmm_oi_cpu_to_le(&lum->lmm_oi, &lum->lmm_oi);
+			lum->lmm_pattern = cpu_to_le32(desc->ld_pattern);
+			lum->lmm_stripe_size = cpu_to_le32(
+						desc->ld_default_stripe_size);
+			lum->lmm_stripe_count = cpu_to_le16(
+						desc->ld_default_stripe_count);
+			lum->lmm_stripe_offset = cpu_to_le16(
+						desc->ld_default_stripe_offset);
+			rc = sizeof(*lum);
 		} else {
 			rc = -ERANGE;
 		}