mm: compaction: direct compact when a high-order allocation fails
[safe/jmp/linux-2.6] / fs / ocfs2 / super.c
index 2606991..2c26ce2 100644 (file)
@@ -69,6 +69,7 @@
 #include "xattr.h"
 #include "quota.h"
 #include "refcounttree.h"
+#include "suballoc.h"
 
 #include "buffer_head_io.h"
 
@@ -93,7 +94,9 @@ struct mount_options
        unsigned long   mount_opt;
        unsigned int    atime_quantum;
        signed short    slot;
-       unsigned int    localalloc_opt;
+       int             localalloc_opt;
+       unsigned int    resv_level;
+       int             dir_resv_level;
        char            cluster_stack[OCFS2_STACK_LABEL_LEN + 1];
 };
 
@@ -175,6 +178,8 @@ enum {
        Opt_noacl,
        Opt_usrquota,
        Opt_grpquota,
+       Opt_resv_level,
+       Opt_dir_resv_level,
        Opt_err,
 };
 
@@ -201,6 +206,8 @@ static const match_table_t tokens = {
        {Opt_noacl, "noacl"},
        {Opt_usrquota, "usrquota"},
        {Opt_grpquota, "grpquota"},
+       {Opt_resv_level, "resv_level=%u"},
+       {Opt_dir_resv_level, "dir_resv_level=%u"},
        {Opt_err, NULL}
 };
 
@@ -301,9 +308,12 @@ static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
 
        spin_lock(&osb->osb_lock);
        out += snprintf(buf + out, len - out,
-                       "%10s => Slot: %d  NumStolen: %d\n", "Steal",
+                       "%10s => InodeSlot: %d  StolenInodes: %d, "
+                       "MetaSlot: %d  StolenMeta: %d\n", "Steal",
                        osb->s_inode_steal_slot,
-                       atomic_read(&osb->s_num_inodes_stolen));
+                       atomic_read(&osb->s_num_inodes_stolen),
+                       osb->s_meta_steal_slot,
+                       atomic_read(&osb->s_num_meta_stolen));
        spin_unlock(&osb->osb_lock);
 
        out += snprintf(buf + out, len - out, "OrphanScan => ");
@@ -928,12 +938,16 @@ static void ocfs2_disable_quotas(struct ocfs2_super *osb)
        int type;
        struct inode *inode;
        struct super_block *sb = osb->sb;
+       struct ocfs2_mem_dqinfo *oinfo;
 
        /* We mostly ignore errors in this function because there's not much
         * we can do when we see them */
        for (type = 0; type < MAXQUOTAS; type++) {
                if (!sb_has_quota_loaded(sb, type))
                        continue;
+               /* Cancel periodic syncing before we grab dqonoff_mutex */
+               oinfo = sb_dqinfo(sb, type)->dqi_priv;
+               cancel_delayed_work_sync(&oinfo->dqi_sync_work);
                inode = igrab(sb->s_dquot.files[type]);
                /* Turn off quotas. This will remove all dquot structures from
                 * memory and so they will be automatically synced to global
@@ -1024,8 +1038,14 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
        osb->s_atime_quantum = parsed_options.atime_quantum;
        osb->preferred_slot = parsed_options.slot;
        osb->osb_commit_interval = parsed_options.commit_interval;
-       osb->local_alloc_default_bits = ocfs2_megabytes_to_clusters(sb, parsed_options.localalloc_opt);
-       osb->local_alloc_bits = osb->local_alloc_default_bits;
+
+       ocfs2_la_set_sizes(osb, parsed_options.localalloc_opt);
+       osb->osb_resv_level = parsed_options.resv_level;
+       osb->osb_dir_resv_level = parsed_options.resv_level;
+       if (parsed_options.dir_resv_level == -1)
+               osb->osb_dir_resv_level = parsed_options.resv_level;
+       else
+               osb->osb_dir_resv_level = parsed_options.dir_resv_level;
 
        status = ocfs2_verify_userspace_stack(osb, &parsed_options);
        if (status)
@@ -1062,7 +1082,7 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
                                     "file system, but write access is "
                                     "unavailable.\n");
                        else
-                               mlog_errno(status);                     
+                               mlog_errno(status);
                        goto read_super_error;
                }
 
@@ -1281,11 +1301,13 @@ static int ocfs2_parse_options(struct super_block *sb,
                   options ? options : "(none)");
 
        mopt->commit_interval = 0;
-       mopt->mount_opt = 0;
+       mopt->mount_opt = OCFS2_MOUNT_NOINTR;
        mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
        mopt->slot = OCFS2_INVALID_SLOT;
-       mopt->localalloc_opt = OCFS2_DEFAULT_LOCAL_ALLOC_SIZE;
+       mopt->localalloc_opt = -1;
        mopt->cluster_stack[0] = '\0';
+       mopt->resv_level = OCFS2_DEFAULT_RESV_LEVEL;
+       mopt->dir_resv_level = -1;
 
        if (!options) {
                status = 1;
@@ -1376,7 +1398,7 @@ static int ocfs2_parse_options(struct super_block *sb,
                                status = 0;
                                goto bail;
                        }
-                       if (option >= 0 && (option <= ocfs2_local_alloc_size(sb) * 8))
+                       if (option >= 0)
                                mopt->localalloc_opt = option;
                        break;
                case Opt_localflocks:
@@ -1429,6 +1451,28 @@ static int ocfs2_parse_options(struct super_block *sb,
                        mopt->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL;
                        mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;
                        break;
+               case Opt_resv_level:
+                       if (is_remount)
+                               break;
+                       if (match_int(&args[0], &option)) {
+                               status = 0;
+                               goto bail;
+                       }
+                       if (option >= OCFS2_MIN_RESV_LEVEL &&
+                           option < OCFS2_MAX_RESV_LEVEL)
+                               mopt->resv_level = option;
+                       break;
+               case Opt_dir_resv_level:
+                       if (is_remount)
+                               break;
+                       if (match_int(&args[0], &option)) {
+                               status = 0;
+                               goto bail;
+                       }
+                       if (option >= OCFS2_MIN_RESV_LEVEL &&
+                           option < OCFS2_MAX_RESV_LEVEL)
+                               mopt->dir_resv_level = option;
+                       break;
                default:
                        mlog(ML_ERROR,
                             "Unrecognized mount option \"%s\" "
@@ -1483,7 +1527,7 @@ static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
                           (unsigned) (osb->osb_commit_interval / HZ));
 
        local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits);
-       if (local_alloc_megs != OCFS2_DEFAULT_LOCAL_ALLOC_SIZE)
+       if (local_alloc_megs != ocfs2_la_default_mb(osb))
                seq_printf(s, ",localalloc=%d", local_alloc_megs);
 
        if (opts & OCFS2_MOUNT_LOCALFLOCKS)
@@ -1510,6 +1554,12 @@ static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
        else
                seq_printf(s, ",noacl");
 
+       if (osb->osb_resv_level != OCFS2_DEFAULT_RESV_LEVEL)
+               seq_printf(s, ",resv_level=%d", osb->osb_resv_level);
+
+       if (osb->osb_dir_resv_level != osb->osb_resv_level)
+               seq_printf(s, ",dir_resv_level=%d", osb->osb_resv_level);
+
        return 0;
 }
 
@@ -1684,6 +1734,8 @@ static void ocfs2_inode_init_once(void *data)
        oi->ip_blkno = 0ULL;
        oi->ip_clusters = 0;
 
+       ocfs2_resv_init_once(&oi->ip_la_data_resv);
+
        ocfs2_lock_res_init_once(&oi->ip_rw_lockres);
        ocfs2_lock_res_init_once(&oi->ip_inode_lockres);
        ocfs2_lock_res_init_once(&oi->ip_open_lockres);
@@ -1997,7 +2049,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
        osb->blocked_lock_count = 0;
        spin_lock_init(&osb->osb_lock);
        spin_lock_init(&osb->osb_xattr_lock);
-       ocfs2_init_inode_steal_slot(osb);
+       ocfs2_init_steal_slots(osb);
 
        atomic_set(&osb->alloc_stats.moves, 0);
        atomic_set(&osb->alloc_stats.local_data, 0);
@@ -2038,6 +2090,12 @@ static int ocfs2_initialize_super(struct super_block *sb,
 
        init_waitqueue_head(&osb->osb_mount_event);
 
+       status = ocfs2_resmap_init(osb, &osb->osb_la_resmap);
+       if (status) {
+               mlog_errno(status);
+               goto bail;
+       }
+
        osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL);
        if (!osb->vol_label) {
                mlog(ML_ERROR, "unable to alloc vol label\n");
@@ -2220,9 +2278,11 @@ static int ocfs2_initialize_super(struct super_block *sb,
        }
 
        osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno;
+       osb->osb_clusters_at_boot = OCFS2_I(inode)->ip_clusters;
        iput(inode);
 
-       osb->bitmap_cpg = ocfs2_group_bitmap_size(sb) * 8;
+       osb->bitmap_cpg = ocfs2_group_bitmap_size(sb, 0,
+                                osb->s_feature_incompat) * 8;
 
        status = ocfs2_init_slot_info(osb);
        if (status < 0) {
@@ -2505,5 +2565,25 @@ void __ocfs2_abort(struct super_block* sb,
        ocfs2_handle_error(sb);
 }
 
+/*
+ * Void signal blockers, because in-kernel sigprocmask() only fails
+ * when SIG_* is wrong.
+ */
+void ocfs2_block_signals(sigset_t *oldset)
+{
+       int rc;
+       sigset_t blocked;
+
+       sigfillset(&blocked);
+       rc = sigprocmask(SIG_BLOCK, &blocked, oldset);
+       BUG_ON(rc);
+}
+
+void ocfs2_unblock_signals(sigset_t *oldset)
+{
+       int rc = sigprocmask(SIG_SETMASK, oldset, NULL);
+       BUG_ON(rc);
+}
+
 module_init(ocfs2_init);
 module_exit(ocfs2_exit);