From: yury <yury>
Date: Thu, 26 Oct 2006 10:28:40 +0000 (+0000)
Subject: - debug message in split code. Cleanups.
X-Git-Tag: v1_8_0_110~486^2~337
X-Git-Url: https://git.whamcloud.com/?a=commitdiff_plain;h=4dc2aef8bca2e5d652886a87b5032ff7ad6cfbfb;p=fs%2Flustre-release.git

- debug message in split code. Cleanups.
- use less controversial MDL -> DLM locks converting style.
---

diff --git a/lustre/cmm/cmm_object.c b/lustre/cmm/cmm_object.c
index df7033a..e913acf 100644
--- a/lustre/cmm/cmm_object.c
+++ b/lustre/cmm/cmm_object.c
@@ -375,10 +375,11 @@ static int cml_lookup(const struct lu_env *env, struct md_object *mo_p,
 static mdl_mode_t cml_lock_mode(const struct lu_env *env,
                                 struct md_object *mo, mdl_mode_t lm)
 {
-#if defined(HAVE_SPLIT_SUPPORT)
+#ifdef HAVE_SPLIT_SUPPORT
         struct md_attr *ma = &cmm_env_info(env)->cmi_ma;
         int rc, split;
         ENTRY;
+        
         memset(ma, 0, sizeof(*ma));
 
         /*
@@ -392,8 +393,11 @@ static mdl_mode_t cml_lock_mode(const struct lu_env *env,
                 RETURN(MDL_MINMODE);
         }
 
-        if (lm == MDL_PW && split == CMM_EXPECT_SPLIT)
+        if (lm == MDL_PW && split == CMM_EXPECT_SPLIT) {
+                CDEBUG(D_INFO|D_WARNING, "Going to split "DFID"\n",
+                       PFID(lu_object_fid(&mo->mo_lu)));
                 RETURN(MDL_EX);
+        }
         RETURN(MDL_MINMODE);
 #endif
         return MDL_MINMODE;
diff --git a/lustre/mdt/mdt_handler.c b/lustre/mdt/mdt_handler.c
index bf4e8fd..20e8a8a 100644
--- a/lustre/mdt/mdt_handler.c
+++ b/lustre/mdt/mdt_handler.c
@@ -156,45 +156,37 @@ void mdt_set_disposition(struct mdt_thread_info *info,
 }
 
 static mdl_mode_t mdt_mdl_lock_modes[] = {
-        [0] = MDL_MINMODE,
-        [1] = MDL_EX,
-        [2] = MDL_PW,
-        [3] = MDL_PR,
-        [4] = MDL_CW,
-        [5] = MDL_CR,
-        [6] = MDL_NL,
-        [7] = MDL_GROUP
+        [LCK_MINMODE] = MDL_MINMODE,
+        [LCK_EX]      = MDL_EX,
+        [LCK_PW]      = MDL_PW,
+        [LCK_PR]      = MDL_PR,
+        [LCK_CW]      = MDL_CW,
+        [LCK_CR]      = MDL_CR,
+        [LCK_NL]      = MDL_NL,
+        [LCK_GROUP]   = MDL_GROUP
 };
 
 static ldlm_mode_t mdt_ldlm_lock_modes[] = {
-        [0] = LCK_MINMODE,
-        [1] = LCK_EX,
-        [2] = LCK_PW,
-        [3] = LCK_PR,
-        [4] = LCK_CW,
-        [5] = LCK_CR,
-        [6] = LCK_NL,
-        [7] = LCK_GROUP
+        [MDL_MINMODE] = LCK_MINMODE,
+        [MDL_EX]      = LCK_EX,
+        [MDL_PW]      = LCK_PW,
+        [MDL_PR]      = LCK_PR,
+        [MDL_CW]      = LCK_CW,
+        [MDL_CR]      = LCK_CR,
+        [MDL_NL]      = LCK_NL,
+        [MDL_GROUP]   = LCK_GROUP
 };
 
 static inline mdl_mode_t mdt_ldlm_mode2mdl_mode(ldlm_mode_t mode)
 {
-        int idx = ffs((int)mode);
-
-        LASSERT(idx >= 0);
         LASSERT(IS_PO2(mode));
-        LASSERT(idx < ARRAY_SIZE(mdt_mdl_lock_modes));
-        return mdt_mdl_lock_modes[idx];
+        return mdt_mdl_lock_modes[mode];
 }
 
 static inline ldlm_mode_t mdt_mdl_mode2ldlm_mode(mdl_mode_t mode)
 {
-        int idx = ffs((int)mode);
-
-        LASSERT(idx >= 0);
         LASSERT(IS_PO2(mode));
-        LASSERT(idx < ARRAY_SIZE(mdt_ldlm_lock_modes));
-        return mdt_ldlm_lock_modes[idx];
+        return mdt_ldlm_lock_modes[mode];
 }
 
 void mdt_lock_reg_init(struct mdt_lock_handle *lh, ldlm_mode_t lm)
@@ -256,8 +248,11 @@ static ldlm_mode_t mdt_lock_pdo_mode(struct mdt_thread_info *info,
                 mode = mdo_lock_mode(info->mti_env, mdt_object_child(o),
                                      mdt_ldlm_mode2mdl_mode(lm));
         } else {
-                /* Default locks for non-existing objects. */
-                mode = MDL_MINMODE;
+                /* 
+                 * No pdo locks possible on not existing objects, because pdo
+                 * lock is taken on parent dir and it can't absent.
+                 */
+                LBUG();
         }
 
         if (mode != MDL_MINMODE) {