LU-6179 llite: Implement ladvise lockahead

[fs/lustre-release.git] / lustre / utils / liblustreapi_ladvise.c

diff --git a/lustre/utils/liblustreapi_ladvise.c b/lustre/utils/liblustreapi_ladvise.c
index 445c145..c098889 100644 (file)
--- a/lustre/utils/liblustreapi_ladvise.c
+++ b/lustre/utils/liblustreapi_ladvise.c
@@ -52,8 +52,9 @@
 int llapi_ladvise(int fd, unsigned long long flags, int num_advise,
                  struct llapi_lu_ladvise *ladvise)
 {
 int llapi_ladvise(int fd, unsigned long long flags, int num_advise,
                  struct llapi_lu_ladvise *ladvise)
 {

-       int rc;

        struct llapi_ladvise_hdr *ladvise_hdr;
        struct llapi_ladvise_hdr *ladvise_hdr;

+       int rc;
+       int i;

 
        if (num_advise < 1 || num_advise >= LAH_COUNT_MAX) {
                errno = EINVAL;
 
        if (num_advise < 1 || num_advise >= LAH_COUNT_MAX) {
                errno = EINVAL;


@@ -79,6 +80,18 @@ int llapi_ladvise(int fd, unsigned long long flags, int num_advise,
                llapi_error(LLAPI_MSG_ERROR, -errno, "cannot give advice");
                return -1;
        }
                llapi_error(LLAPI_MSG_ERROR, -errno, "cannot give advice");
                return -1;
        }

+
+       /* Copy results back in to caller provided structs */
+       for (i = 0; i < num_advise; i++) {
+               struct llapi_lu_ladvise *ladvise_iter;
+
+               ladvise_iter = &ladvise_hdr->lah_advise[i];
+
+               if (ladvise_iter->lla_advice == LU_LADVISE_LOCKAHEAD)
+                       ladvise[i].lla_lockahead_result =
+                                       ladvise_iter->lla_lockahead_result;
+       }
+

        return 0;
 }
 
        return 0;
 }