Tweak nfs support

[yaffs2.git] / yaffs_fs.c

diff --git a/yaffs_fs.c b/yaffs_fs.c
index 95538ab4ea2210ee6278847b5260a7a50a3cc115..0ee40e7c36bfbd69dbda58e8c8281c22b746fc92 100644 (file)
--- a/yaffs_fs.c
+++ b/yaffs_fs.c
@@ -41,6 +41,11 @@ extern const char *yaffs_guts_c_version;
 #define YAFFS_COMPILE_BACKGROUND
 #endif
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
+#define YAFFS_COMPILE_EXPORTFS
+#endif
+
+
 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19))
 #include <linux/config.h>
 #endif
@@ -56,7 +61,10 @@ extern const char *yaffs_guts_c_version;
 #include <linux/interrupt.h>
 #include <linux/string.h>
 #include <linux/ctype.h>
+
+#ifdef YAFFS_COMPILE_EXPORTFS
 #include <linux/exportfs.h>
+#endif
 
 #ifdef YAFFS_COMPILE_BACKGROUND
 #include <linux/kthread.h>
@@ -417,12 +425,12 @@ static void yaffs_GrossUnlock(yaffs_Device *dev)
        up(&(yaffs_DeviceToContext(dev)->grossLock));
 }
 
-
+#ifdef YAFFS_COMPILE_EXPORTFS
 
 static struct inode *
 yaffs2_nfs_get_inode(struct super_block *sb, uint64_t ino, uint32_t generation)
 {
-       return yaffs_iget(sb, ino);
+       return Y_IGET(sb, ino);
 }
 
 static struct dentry *
@@ -453,7 +461,7 @@ struct dentry *yaffs2_get_parent(struct dentry *dentry)
                parent_obj = d_obj->parent;
                if (parent_obj) {
                        parent_ino = yaffs_GetObjectInode(parent_obj);
-                       inode = yaffs_iget(sb, parent_ino);
+                       inode = Y_IGET(sb, parent_ino);
 
                        if (IS_ERR(inode)) {
                                parent = ERR_CAST(inode);
@@ -470,7 +478,6 @@ struct dentry *yaffs2_get_parent(struct dentry *dentry)
        return parent;
 }
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,9))
 /* Just declare a zero structure as a NULL value implies
  * using the default functions of expfs.
  */
@@ -1442,13 +1449,11 @@ static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir)
 
        /* If the directory has changed since the open or last call to
           readdir, rewind to after the 2 canned entries. */
-#if 0 /* For exportfs patch */
        if (f->f_version != inode->i_version) {
                offset = 2;
                f->f_pos = offset;
                f->f_version = inode->i_version;
        }
-#endif
 
        while(sc->nextReturn){
                curoffs++;
@@ -1937,17 +1942,23 @@ static int yaffs_do_sync_fs(struct super_block *sb, int do_checkpoint)
 {
 
        yaffs_Device *dev = yaffs_SuperToDevice(sb);
+       unsigned int oneshot_checkpoint = (yaffs_auto_checkpoint & 4);
+
        T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC, 
-               ("yaffs_do_sync_fs: %s %s\n", 
+               ("yaffs_do_sync_fs: %s %s%s\n",
                sb->s_dirt ? "dirty" : "clean",
-               do_checkpoint ? "with checkpoint" : "no checkpoint"));
+               do_checkpoint ? "with checkpoint" : "no checkpoint",
+               oneshot_checkpoint ? " one-shot" : "" ));
 
-       if (sb->s_dirt) {
+       if (sb->s_dirt || oneshot_checkpoint) {
                yaffs_GrossLock(dev);
                yaffs_FlushSuperBlock(sb,do_checkpoint);
                yaffs_GrossUnlock(dev);
 
                sb->s_dirt = 0;
+
+               if(oneshot_checkpoint)
+                       yaffs_auto_checkpoint &= ~4;
        }
        return 0;
 }
@@ -2305,7 +2316,7 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion,
        sb->s_op = &yaffs_super_ops;
        sb->s_flags |= MS_NOATIME;
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,9))
+#ifdef YAFFS_COMPILE_EXPORTFS
        sb->s_export_op = &yaffs_export_ops;
 #endif