LU-5162 mdc: Add exception entry check for radix_tree

[fs/lustre-release.git] / lustre / lov / lov_ea.c

diff --git a/lustre/lov/lov_ea.c b/lustre/lov/lov_ea.c
index e5ae020..462f39b 100644 (file)
--- a/lustre/lov/lov_ea.c
+++ b/lustre/lov/lov_ea.c
@@ -41,14 +41,13 @@
 #define DEBUG_SUBSYSTEM S_LOV
 
 #ifdef __KERNEL__
-#include <asm/div64.h>
+#include <linux/math64.h>
 #include <libcfs/libcfs.h>
 #else
 #include <liblustre.h>
 #endif
 
 #include <obd_class.h>
-#include <obd_lov.h>
 #include <lustre/lustre_idl.h>
 
 #include "lov_internal.h"
@@ -86,33 +85,33 @@ static int lsm_lmm_verify_common(struct lov_mds_md *lmm, int lmm_bytes,
 
 struct lov_stripe_md *lsm_alloc_plain(__u16 stripe_count, int *size)
 {
-        struct lov_stripe_md *lsm;
-        struct lov_oinfo     *loi;
-        int                   i, oinfo_ptrs_size;
+       struct lov_stripe_md *lsm;
+       struct lov_oinfo     *loi;
+       int                   i, oinfo_ptrs_size;
 
-        LASSERT(stripe_count <= LOV_MAX_STRIPE_COUNT);
+       LASSERT(stripe_count <= LOV_MAX_STRIPE_COUNT);
 
-        oinfo_ptrs_size = sizeof(struct lov_oinfo *) * stripe_count;
-        *size = sizeof(struct lov_stripe_md) + oinfo_ptrs_size;
+       oinfo_ptrs_size = sizeof(struct lov_oinfo *) * stripe_count;
+       *size = sizeof(struct lov_stripe_md) + oinfo_ptrs_size;
 
-        OBD_ALLOC_LARGE(lsm, *size);
-        if (!lsm)
-                return NULL;;
+       OBD_ALLOC_LARGE(lsm, *size);
+       if (!lsm)
+               return NULL;
 
-        for (i = 0; i < stripe_count; i++) {
-               OBD_SLAB_ALLOC_PTR_GFP(loi, lov_oinfo_slab, __GFP_IO);
-                if (loi == NULL)
-                        goto err;
-                lsm->lsm_oinfo[i] = loi;
-        }
-        lsm->lsm_stripe_count = stripe_count;
-        return lsm;
+       for (i = 0; i < stripe_count; i++) {
+               OBD_SLAB_ALLOC_PTR_GFP(loi, lov_oinfo_slab, GFP_NOFS);
+               if (loi == NULL)
+                       goto err;
+               lsm->lsm_oinfo[i] = loi;
+       }
+       lsm->lsm_stripe_count = stripe_count;
+       return lsm;
 
 err:
-        while (--i >= 0)
-                OBD_SLAB_FREE(lsm->lsm_oinfo[i], lov_oinfo_slab, sizeof(*loi));
-        OBD_FREE_LARGE(lsm, *size);
-        return NULL;
+       while (--i >= 0)
+               OBD_SLAB_FREE(lsm->lsm_oinfo[i], lov_oinfo_slab, sizeof(*loi));
+       OBD_FREE_LARGE(lsm, *size);
+       return NULL;
 }
 
 void lsm_free_plain(struct lov_stripe_md *lsm)
@@ -227,6 +226,9 @@ int lsm_unpackmd_v1(struct lov_obd *lov, struct lov_stripe_md *lsm,
                ostid_le_to_cpu(&lmm->lmm_objects[i].l_ost_oi, &loi->loi_oi);
                loi->loi_ost_idx = le32_to_cpu(lmm->lmm_objects[i].l_ost_idx);
                loi->loi_ost_gen = le32_to_cpu(lmm->lmm_objects[i].l_ost_gen);
+               if (lov_oinfo_is_dummy(loi))
+                       continue;
+
                if (loi->loi_ost_idx >= lov->desc.ld_tgt_count) {
                         CERROR("OST index %d more than OST count %d\n",
                                loi->loi_ost_idx, lov->desc.ld_tgt_count);
@@ -309,11 +311,14 @@ int lsm_unpackmd_v3(struct lov_obd *lov, struct lov_stripe_md *lsm,
                return -E2BIG;
 
         for (i = 0; i < stripe_count; i++) {
-                /* XXX LOV STACKING call down to osc_unpackmd() */
-                loi = lsm->lsm_oinfo[i];
+               /* XXX LOV STACKING call down to osc_unpackmd() */
+               loi = lsm->lsm_oinfo[i];
                ostid_le_to_cpu(&lmm->lmm_objects[i].l_ost_oi, &loi->loi_oi);
-                loi->loi_ost_idx = le32_to_cpu(lmm->lmm_objects[i].l_ost_idx);
-                loi->loi_ost_gen = le32_to_cpu(lmm->lmm_objects[i].l_ost_gen);
+               loi->loi_ost_idx = le32_to_cpu(lmm->lmm_objects[i].l_ost_idx);
+               loi->loi_ost_gen = le32_to_cpu(lmm->lmm_objects[i].l_ost_gen);
+               if (lov_oinfo_is_dummy(loi))
+                       continue;
+
                 if (loi->loi_ost_idx >= lov->desc.ld_tgt_count) {
                         CERROR("OST index %d more than OST count %d\n",
                                loi->loi_ost_idx, lov->desc.ld_tgt_count);
@@ -346,3 +351,13 @@ const struct lsm_operations lsm_v3_ops = {
         .lsm_unpackmd           = lsm_unpackmd_v3,
 };
 
+void dump_lsm(unsigned int level, const struct lov_stripe_md *lsm)
+{
+       CDEBUG(level, "lsm %p, objid "DOSTID", maxbytes "LPX64", magic 0x%08X,"
+              " stripe_size %u, stripe_count %u, refc: %d,"
+              " layout_gen %u, pool ["LOV_POOLNAMEF"]\n", lsm,
+              POSTID(&lsm->lsm_oi), lsm->lsm_maxbytes, lsm->lsm_magic,
+              lsm->lsm_stripe_size, lsm->lsm_stripe_count,
+              atomic_read(&lsm->lsm_refc), lsm->lsm_layout_gen,
+              lsm->lsm_pool_name);
+}