jffs_fm.c should #include "intrep.h"

[safe/jmp/linux-2.6] / fs / quota.c

diff --git a/fs/quota.c b/fs/quota.c
index 3f0333a..612e04d 100644 (file)
--- a/fs/quota.c
+++ b/fs/quota.c
@@ -15,6 +15,7 @@
 #include <linux/security.h>
 #include <linux/syscalls.h>
 #include <linux/buffer_head.h>
+#include <linux/quotaops.h>
 
 /* Check validity of generic quotactl commands */
 static int generic_quotactl_valid(struct super_block *sb, int type, int cmd, qid_t id)
@@ -118,6 +119,10 @@ static int xqm_quotactl_valid(struct super_block *sb, int type, int cmd, qid_t i
                        if (!sb->s_qcop->get_xquota)
                                return -ENOSYS;
                        break;
+               case Q_XQUOTASYNC:
+                       if (!sb->s_qcop->quota_sync)
+                               return -ENOSYS;
+                       break;
                default:
                        return -EINVAL;
        }
@@ -128,7 +133,7 @@ static int xqm_quotactl_valid(struct super_block *sb, int type, int cmd, qid_t i
                     (type == XQM_GRPQUOTA && !in_egroup_p(id))) &&
                     !capable(CAP_SYS_ADMIN))
                        return -EPERM;
-       } else if (cmd != Q_XGETQSTAT) {
+       } else if (cmd != Q_XGETQSTAT && cmd != Q_XQUOTASYNC) {
                if (!capable(CAP_SYS_ADMIN))
                        return -EPERM;
        }
@@ -149,36 +154,6 @@ static int check_quotactl_valid(struct super_block *sb, int type, int cmd, qid_t
        return error;
 }
 
-static struct super_block *get_super_to_sync(int type)
-{
-       struct list_head *head;
-       int cnt, dirty;
-
-restart:
-       spin_lock(&sb_lock);
-       list_for_each(head, &super_blocks) {
-               struct super_block *sb = list_entry(head, struct super_block, s_list);
-
-               /* This test just improves performance so it needn't be reliable... */
-               for (cnt = 0, dirty = 0; cnt < MAXQUOTAS; cnt++)
-                       if ((type == cnt || type == -1) && sb_has_quota_enabled(sb, cnt)
-                           && info_any_dirty(&sb_dqopt(sb)->info[cnt]))
-                               dirty = 1;
-               if (!dirty)
-                       continue;
-               sb->s_count++;
-               spin_unlock(&sb_lock);
-               down_read(&sb->s_umount);
-               if (!sb->s_root) {
-                       drop_super(sb);
-                       goto restart;
-               }
-               return sb;
-       }
-       spin_unlock(&sb_lock);
-       return NULL;
-}
-
 static void quota_sync_sb(struct super_block *sb, int type)
 {
        int cnt;
@@ -219,17 +194,35 @@ static void quota_sync_sb(struct super_block *sb, int type)
 
 void sync_dquots(struct super_block *sb, int type)
 {
+       int cnt, dirty;
+
        if (sb) {
                if (sb->s_qcop->quota_sync)
                        quota_sync_sb(sb, type);
+               return;
        }
-       else {
-               while ((sb = get_super_to_sync(type)) != NULL) {
-                       if (sb->s_qcop->quota_sync)
-                               quota_sync_sb(sb, type);
-                       drop_super(sb);
-               }
+
+       spin_lock(&sb_lock);
+restart:
+       list_for_each_entry(sb, &super_blocks, s_list) {
+               /* This test just improves performance so it needn't be reliable... */
+               for (cnt = 0, dirty = 0; cnt < MAXQUOTAS; cnt++)
+                       if ((type == cnt || type == -1) && sb_has_quota_enabled(sb, cnt)
+                           && info_any_dirty(&sb_dqopt(sb)->info[cnt]))
+                               dirty = 1;
+               if (!dirty)
+                       continue;
+               sb->s_count++;
+               spin_unlock(&sb_lock);
+               down_read(&sb->s_umount);
+               if (sb->s_root && sb->s_qcop->quota_sync)
+                       quota_sync_sb(sb, type);
+               up_read(&sb->s_umount);
+               spin_lock(&sb_lock);
+               if (__put_super_and_need_restart(sb))
+                       goto restart;
        }
+       spin_unlock(&sb_lock);
 }
 
 /* Copy parameters and call proper function */
@@ -334,6 +327,8 @@ static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id, void
                                return -EFAULT;
                        return 0;
                }
+               case Q_XQUOTASYNC:
+                       return sb->s_qcop->quota_sync(sb, type);
                /* We never reach here unless validity check is broken */
                default:
                        BUG();