ACPI: Run fixed event device notifications in process context

[platform/adaptation/renesas_rcar/renesas_kernel.git] / fs / super.c

diff --git a/fs/super.c b/fs/super.c
index e5f6c2c..7624267 100644 (file)
--- a/fs/super.c
+++ b/fs/super.c
@@ -166,6 +166,8 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags)
        if (!s)
                return NULL;
 
+       INIT_LIST_HEAD(&s->s_mounts);
+
        if (security_sb_alloc(s))
                goto fail;
 
@@ -188,7 +190,6 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags)
        if (list_lru_init(&s->s_inode_lru))
                goto fail;
 
-       INIT_LIST_HEAD(&s->s_mounts);
        init_rwsem(&s->s_umount);
        lockdep_set_class(&s->s_umount, &type->s_umount_key);
        /*
@@ -702,7 +703,6 @@ int do_remount_sb(struct super_block *sb, int flags, void *data, int force)
        if (flags & MS_RDONLY)
                acct_auto_close(sb);
        shrink_dcache_sb(sb);
-       sync_filesystem(sb);
 
        remount_ro = (flags & MS_RDONLY) && !(sb->s_flags & MS_RDONLY);
 
@@ -719,6 +719,8 @@ int do_remount_sb(struct super_block *sb, int flags, void *data, int force)
                }
        }
 
+       sync_filesystem(sb);
+
        if (sb->s_op->remount_fs) {
                retval = sb->s_op->remount_fs(sb, &flags, data);
                if (retval) {
@@ -800,7 +802,10 @@ void emergency_remount(void)
 
 static DEFINE_IDA(unnamed_dev_ida);
 static DEFINE_SPINLOCK(unnamed_dev_lock);/* protects the above */
-static int unnamed_dev_start = 0; /* don't bother trying below it */
+/* Many userspace utilities consider an FSID of 0 invalid.
+ * Always return at least 1 from get_anon_bdev.
+ */
+static int unnamed_dev_start = 1;
 
 int get_anon_bdev(dev_t *p)
 {