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LU-1302 llog: structures changes, llog_thread_info
[fs/lustre-release.git] / lustre / obdclass / llog_cat.c
index edf822b..54e911f 100644 (file)
@@ -1,6 +1,4 @@
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
  * GPL HEADER START
  *
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
@@ -26,7 +24,7 @@
  * GPL HEADER END
  */
 /*
- * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  */
 /*
 
 #define DEBUG_SUBSYSTEM S_LOG
 
-#ifndef EXPORT_SYMTAB
-#define EXPORT_SYMTAB
-#endif
-
 #ifndef __KERNEL__
 #include <liblustre.h>
 #endif
@@ -97,13 +91,18 @@ static struct llog_handle *llog_cat_new_log(struct llog_handle *cathandle)
 
         if (index == 0)
                 index = 1;
+
+       cfs_spin_lock(&loghandle->lgh_hdr_lock);
+       llh->llh_count++;
         if (ext2_set_bit(index, llh->llh_bitmap)) {
                 CERROR("argh, index %u already set in log bitmap?\n",
                        index);
+               cfs_spin_unlock(&loghandle->lgh_hdr_lock);
                 LBUG(); /* should never happen */
         }
+       cfs_spin_unlock(&loghandle->lgh_hdr_lock);
+
         cathandle->lgh_last_idx = index;
-        llh->llh_count++;
         llh->llh_tail.lrt_index = index;
 
         CDEBUG(D_RPCTRACE,"new recovery log "LPX64":%x for index %u of catalog "
@@ -126,8 +125,9 @@ static struct llog_handle *llog_cat_new_log(struct llog_handle *cathandle)
 
         loghandle->lgh_hdr->llh_cat_idx = index;
         cathandle->u.chd.chd_current_log = loghandle;
-        LASSERT(list_empty(&loghandle->u.phd.phd_entry));
-        list_add_tail(&loghandle->u.phd.phd_entry, &cathandle->u.chd.chd_head);
+        LASSERT(cfs_list_empty(&loghandle->u.phd.phd_entry));
+        cfs_list_add_tail(&loghandle->u.phd.phd_entry,
+                          &cathandle->u.chd.chd_head);
 
 out_destroy:
         if (rc < 0)
@@ -152,8 +152,8 @@ int llog_cat_id2handle(struct llog_handle *cathandle, struct llog_handle **res,
         if (cathandle == NULL)
                 RETURN(-EBADF);
 
-        list_for_each_entry(loghandle, &cathandle->u.chd.chd_head,
-                            u.phd.phd_entry) {
+        cfs_list_for_each_entry(loghandle, &cathandle->u.chd.chd_head,
+                                u.phd.phd_entry) {
                 struct llog_logid *cgl = &loghandle->lgh_id;
                 if (cgl->lgl_oid == logid->lgl_oid) {
                         if (cgl->lgl_ogen != logid->lgl_ogen) {
@@ -174,8 +174,8 @@ int llog_cat_id2handle(struct llog_handle *cathandle, struct llog_handle **res,
         } else {
                 rc = llog_init_handle(loghandle, LLOG_F_IS_PLAIN, NULL);
                 if (!rc) {
-                        list_add(&loghandle->u.phd.phd_entry,
-                                 &cathandle->u.chd.chd_head);
+                        cfs_list_add(&loghandle->u.phd.phd_entry,
+                                     &cathandle->u.chd.chd_head);
                 }
         }
         if (!rc) {
@@ -196,8 +196,8 @@ int llog_cat_put(struct llog_handle *cathandle)
         int rc;
         ENTRY;
 
-        list_for_each_entry_safe(loghandle, n, &cathandle->u.chd.chd_head,
-                                 u.phd.phd_entry) {
+        cfs_list_for_each_entry_safe(loghandle, n, &cathandle->u.chd.chd_head,
+                                     u.phd.phd_entry) {
                 int err = llog_close(loghandle);
                 if (err)
                         CERROR("error closing loghandle\n");
@@ -231,47 +231,47 @@ static struct llog_handle *llog_cat_current_log(struct llog_handle *cathandle,
         struct llog_handle *loghandle = NULL;
         ENTRY;
 
-        down_read_nested(&cathandle->lgh_lock, LLOGH_CAT);
+        cfs_down_read_nested(&cathandle->lgh_lock, LLOGH_CAT);
         loghandle = cathandle->u.chd.chd_current_log;
         if (loghandle) {
                 struct llog_log_hdr *llh = loghandle->lgh_hdr;
-                down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
+                cfs_down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
                 if (loghandle->lgh_last_idx < LLOG_BITMAP_SIZE(llh) - 1) {
-                        up_read(&cathandle->lgh_lock);
+                        cfs_up_read(&cathandle->lgh_lock);
                         RETURN(loghandle);
                 } else {
-                        up_write(&loghandle->lgh_lock);
+                        cfs_up_write(&loghandle->lgh_lock);
                 }
         }
         if (!create) {
                 if (loghandle)
-                        down_write(&loghandle->lgh_lock);
-                up_read(&cathandle->lgh_lock);
+                        cfs_down_write(&loghandle->lgh_lock);
+                cfs_up_read(&cathandle->lgh_lock);
                 RETURN(loghandle);
         }
-        up_read(&cathandle->lgh_lock);
+        cfs_up_read(&cathandle->lgh_lock);
 
         /* time to create new log */
 
         /* first, we have to make sure the state hasn't changed */
-        down_write_nested(&cathandle->lgh_lock, LLOGH_CAT);
+        cfs_down_write_nested(&cathandle->lgh_lock, LLOGH_CAT);
         loghandle = cathandle->u.chd.chd_current_log;
         if (loghandle) {
                 struct llog_log_hdr *llh = loghandle->lgh_hdr;
-                down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
+                cfs_down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
                 if (loghandle->lgh_last_idx < LLOG_BITMAP_SIZE(llh) - 1) {
-                        up_write(&cathandle->lgh_lock);
+                        cfs_up_write(&cathandle->lgh_lock);
                         RETURN(loghandle);
                 } else {
-                        up_write(&loghandle->lgh_lock);
+                        cfs_up_write(&loghandle->lgh_lock);
                 }
         }
 
         CDEBUG(D_INODE, "creating new log\n");
         loghandle = llog_cat_new_log(cathandle);
         if (!IS_ERR(loghandle))
-                down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
-        up_write(&cathandle->lgh_lock);
+                cfs_down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
+        cfs_up_write(&cathandle->lgh_lock);
         RETURN(loghandle);
 }
 
@@ -295,14 +295,14 @@ int llog_cat_add_rec(struct llog_handle *cathandle, struct llog_rec_hdr *rec,
         rc = llog_write_rec(loghandle, rec, reccookie, 1, buf, -1);
         if (rc < 0)
                 CERROR("llog_write_rec %d: lh=%p\n", rc, loghandle);
-        up_write(&loghandle->lgh_lock);
+        cfs_up_write(&loghandle->lgh_lock);
         if (rc == -ENOSPC) {
                 /* to create a new plain log */
                 loghandle = llog_cat_current_log(cathandle, 1);
                 if (IS_ERR(loghandle))
                         RETURN(PTR_ERR(loghandle));
                 rc = llog_write_rec(loghandle, rec, reccookie, 1, buf, -1);
-                up_write(&loghandle->lgh_lock);
+                cfs_up_write(&loghandle->lgh_lock);
         }
 
         RETURN(rc);
@@ -324,7 +324,7 @@ int llog_cat_cancel_records(struct llog_handle *cathandle, int count,
         int i, index, rc = 0;
         ENTRY;
 
-        down_write_nested(&cathandle->lgh_lock, LLOGH_CAT);
+        cfs_down_write_nested(&cathandle->lgh_lock, LLOGH_CAT);
         for (i = 0; i < count; i++, cookies++) {
                 struct llog_handle *loghandle;
                 struct llog_logid *lgl = &cookies->lgc_lgl;
@@ -335,9 +335,9 @@ int llog_cat_cancel_records(struct llog_handle *cathandle, int count,
                         break;
                 }
 
-                down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
+                cfs_down_write_nested(&loghandle->lgh_lock, LLOGH_LOG);
                 rc = llog_cancel_rec(loghandle, cookies->lgc_index);
-                up_write(&loghandle->lgh_lock);
+                cfs_up_write(&loghandle->lgh_lock);
 
                 if (rc == 1) {          /* log has been destroyed */
                         index = loghandle->u.phd.phd_cookie.lgc_index;
@@ -354,7 +354,7 @@ int llog_cat_cancel_records(struct llog_handle *cathandle, int count,
                                        index, cathandle->lgh_id.lgl_oid);
                 }
         }
-        up_write(&cathandle->lgh_lock);
+        cfs_up_write(&cathandle->lgh_lock);
 
         RETURN(rc);
 }
@@ -393,18 +393,20 @@ int llog_cat_process_cb(struct llog_handle *cat_llh, struct llog_rec_hdr *rec,
 
                 cd.lpcd_first_idx = d->lpd_startidx;
                 cd.lpcd_last_idx = 0;
-                rc = llog_process(llh, d->lpd_cb, d->lpd_data, &cd);
+                rc = llog_process_flags(llh, d->lpd_cb, d->lpd_data, &cd,
+                                        d->lpd_flags);
                 /* Continue processing the next log from idx 0 */
                 d->lpd_startidx = 0;
         } else {
-                rc = llog_process(llh, d->lpd_cb, d->lpd_data, NULL);
+                rc = llog_process_flags(llh, d->lpd_cb, d->lpd_data, NULL,
+                                        d->lpd_flags);
         }
 
         RETURN(rc);
 }
 
-int llog_cat_process(struct llog_handle *cat_llh, llog_cb_t cb, void *data,
-                     int startcat, int startidx)
+int llog_cat_process_flags(struct llog_handle *cat_llh, llog_cb_t cb,
+                           void *data, int flags, int startcat, int startidx)
 {
         struct llog_process_data d;
         struct llog_log_hdr *llh = cat_llh->lgh_hdr;
@@ -416,6 +418,7 @@ int llog_cat_process(struct llog_handle *cat_llh, llog_cb_t cb, void *data,
         d.lpd_cb = cb;
         d.lpd_startcat = startcat;
         d.lpd_startidx = startidx;
+        d.lpd_flags = flags;
 
         if (llh->llh_cat_idx > cat_llh->lgh_last_idx) {
                 struct llog_process_cat_data cd;
@@ -425,19 +428,29 @@ int llog_cat_process(struct llog_handle *cat_llh, llog_cb_t cb, void *data,
 
                 cd.lpcd_first_idx = llh->llh_cat_idx;
                 cd.lpcd_last_idx = 0;
-                rc = llog_process(cat_llh, llog_cat_process_cb, &d, &cd);
+                rc = llog_process_flags(cat_llh, llog_cat_process_cb, &d, &cd,
+                                        flags);
                 if (rc != 0)
                         RETURN(rc);
 
                 cd.lpcd_first_idx = 0;
                 cd.lpcd_last_idx = cat_llh->lgh_last_idx;
-                rc = llog_process(cat_llh, llog_cat_process_cb, &d, &cd);
+                rc = llog_process_flags(cat_llh, llog_cat_process_cb, &d, &cd,
+                                        flags);
         } else {
-                rc = llog_process(cat_llh, llog_cat_process_cb, &d, NULL);
+                rc = llog_process_flags(cat_llh, llog_cat_process_cb, &d, NULL,
+                                        flags);
         }
 
         RETURN(rc);
 }
+EXPORT_SYMBOL(llog_cat_process_flags);
+
+int llog_cat_process(struct llog_handle *cat_llh, llog_cb_t cb, void *data,
+                     int startcat, int startidx)
+{
+        return llog_cat_process_flags(cat_llh, cb, data, 0, startcat, startidx);
+}
 EXPORT_SYMBOL(llog_cat_process);
 
 #ifdef __KERNEL__
@@ -446,7 +459,7 @@ int llog_cat_process_thread(void *data)
         struct llog_process_cat_args *args = data;
         struct llog_ctxt *ctxt = args->lpca_ctxt;
         struct llog_handle *llh = NULL;
-        void  *cb = args->lpca_cb;
+        llog_cb_t cb = args->lpca_cb;
         struct llog_logid logid;
         int rc;
         ENTRY;
@@ -466,9 +479,10 @@ int llog_cat_process_thread(void *data)
         }
 
         if (cb) {
-                rc = llog_cat_process(llh, (llog_cb_t)cb, NULL, 0, 0);
+                rc = llog_cat_process(llh, cb, NULL, 0, 0);
                 if (rc != LLOG_PROC_BREAK && rc != 0)
                         CERROR("llog_cat_process() failed %d\n", rc);
+                cb(llh, NULL, NULL);
         } else {
                 CWARN("No callback function for recovery\n");
         }
@@ -476,7 +490,7 @@ int llog_cat_process_thread(void *data)
         /*
          * Make sure that all cached data is sent.
          */
-        llog_sync(ctxt, NULL);
+       llog_sync(ctxt, NULL, 0);
         GOTO(release_llh, rc);
 release_llh:
         rc = llog_cat_put(llh);