Add Waldemar's patches for Linux 3.2

[yaffs2.git] / yaffs_vfs_multi.c

diff --git a/yaffs_vfs_multi.c b/yaffs_vfs_multi.c
index 966df484835990673eb43167ea4b4338113512ad..fdb0137159aeb080809dd7501098d6119d054126 100644 (file)
--- a/yaffs_vfs_multi.c
+++ b/yaffs_vfs_multi.c
@@ -72,7 +72,9 @@
 #include <linux/init.h>
 #include <linux/fs.h>
 #include <linux/proc_fs.h>
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 39))
 #include <linux/smp_lock.h>
+#endif
 #include <linux/pagemap.h>
 #include <linux/mtd/mtd.h>
 #include <linux/interrupt.h>
@@ -146,6 +148,12 @@
 #define YAFFS_USE_WRITE_BEGIN_END 0
 #endif
 
+
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 2, 0))
+#define set_nlink(inode, count)  do { (inode)->i_nlink = (count); } while(0)
+#endif
+
 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28))
 static uint32_t YCALCBLOCKS(uint64_t partition_size, uint32_t block_size)
 {
@@ -237,7 +245,9 @@ static int yaffs_file_flush(struct file *file, fl_owner_t id);
 static int yaffs_file_flush(struct file *file);
 #endif
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39))
+static int yaffs_sync_object(struct file *file, loff_t start, loff_t end, int datasync);
+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34))
 static int yaffs_sync_object(struct file *file, int datasync);
 #else
 static int yaffs_sync_object(struct file *file, struct dentry *dentry,
@@ -1326,7 +1336,7 @@ static void yaffs_fill_inode_from_obj(struct inode *inode,
                inode->i_size = yaffs_get_obj_length(obj);
                inode->i_blocks = (inode->i_size + 511) >> 9;
 
-               inode->i_nlink = yaffs_get_obj_link_count(obj);
+               set_nlink(inode, yaffs_get_obj_link_count(obj));
 
                yaffs_trace(YAFFS_TRACE_OS,
                        "yaffs_fill_inode mode %x uid %d gid %d size %d count %d",
@@ -1740,10 +1750,9 @@ static int yaffs_unlink(struct inode *dir, struct dentry *dentry)
        ret_val = yaffs_unlinker(obj, dentry->d_name.name);
 
        if (ret_val == YAFFS_OK) {
-               dentry->d_inode->i_nlink--;
+               inode_dec_link_count(dentry->d_inode);
                dir->i_version++;
                yaffs_gross_unlock(dev);
-               mark_inode_dirty(dentry->d_inode);
                update_dir_time(dir);
                return 0;
        }
@@ -1775,7 +1784,7 @@ static int yaffs_link(struct dentry *old_dentry, struct inode *dir,
                                   obj);
 
        if (link) {
-               old_dentry->d_inode->i_nlink = yaffs_get_obj_link_count(obj);
+               set_nlink(old_dentry->d_inode, yaffs_get_obj_link_count(obj));
                d_instantiate(dentry, old_dentry->d_inode);
                atomic_inc(&old_dentry->d_inode->i_count);
                yaffs_trace(YAFFS_TRACE_OS,
@@ -1805,6 +1814,14 @@ static int yaffs_symlink(struct inode *dir, struct dentry *dentry,
 
        yaffs_trace(YAFFS_TRACE_OS, "yaffs_symlink");
 
+       if (strnlen(dentry->d_name.name, YAFFS_MAX_NAME_LENGTH + 1) >
+                               YAFFS_MAX_NAME_LENGTH)
+               return -ENAMETOOLONG;
+
+       if (strnlen(symname, YAFFS_MAX_ALIAS_LENGTH + 1) >
+                               YAFFS_MAX_ALIAS_LENGTH)
+               return -ENAMETOOLONG;
+
        dev = yaffs_inode_to_obj(dir)->my_dev;
        yaffs_gross_lock(dev);
        obj = yaffs_create_symlink(yaffs_inode_to_obj(dir), dentry->d_name.name,
@@ -1826,7 +1843,9 @@ static int yaffs_symlink(struct inode *dir, struct dentry *dentry,
        return -ENOMEM;
 }
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39))
+static int yaffs_sync_object(struct file *file, loff_t start, loff_t end, int datasync)
+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34))
 static int yaffs_sync_object(struct file *file, int datasync)
 #else
 static int yaffs_sync_object(struct file *file, struct dentry *dentry,
@@ -1891,10 +1910,8 @@ static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry,
        yaffs_gross_unlock(dev);
 
        if (ret_val == YAFFS_OK) {
-               if (target) {
-                       new_dentry->d_inode->i_nlink--;
-                       mark_inode_dirty(new_dentry->d_inode);
-               }
+               if (target)
+                       inode_dec_link_count(new_dentry->d_inode);
 
                update_dir_time(old_dir);
                if (old_dir != new_dir)
@@ -2973,7 +2990,13 @@ static int yaffs_internal_read_super_mtd(struct super_block *sb, void *data,
        return yaffs_internal_read_super(1, sb, data, silent) ? 0 : -EINVAL;
 }
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39))
+static struct dentry *yaffs_mount(struct file_system_type *fs_type, int flags,
+        const char *dev_name, void *data)
+{
+    return mount_bdev(fs_type, flags, dev_name, data, yaffs_internal_read_super_mtd);
+}
+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
 static int yaffs_read_super(struct file_system_type *fs,
                            int flags, const char *dev_name,
                            void *data, struct vfsmount *mnt)
@@ -2996,8 +3019,12 @@ static struct super_block *yaffs_read_super(struct file_system_type *fs,
 static struct file_system_type yaffs_fs_type = {
        .owner = THIS_MODULE,
        .name = "yaffs",
-       .get_sb = yaffs_read_super,
-       .kill_sb = kill_block_super,
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39))
+        .mount = yaffs_mount,
+#else
+        .get_sb = yaffs_read_super,
+#endif
+       .kill_sb = kill_block_super,
        .fs_flags = FS_REQUIRES_DEV,
 };
 #else
@@ -3019,7 +3046,13 @@ static int yaffs2_internal_read_super_mtd(struct super_block *sb, void *data,
        return yaffs_internal_read_super(2, sb, data, silent) ? 0 : -EINVAL;
 }
 
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39))
+static struct dentry *yaffs2_mount(struct file_system_type *fs_type, int flags,
+        const char *dev_name, void *data)
+{
+        return mount_bdev(fs_type, flags, dev_name, data, yaffs2_internal_read_super_mtd);
+}
+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
 static int yaffs2_read_super(struct file_system_type *fs,
                             int flags, const char *dev_name, void *data,
                             struct vfsmount *mnt)
@@ -3041,8 +3074,12 @@ static struct super_block *yaffs2_read_super(struct file_system_type *fs,
 static struct file_system_type yaffs2_fs_type = {
        .owner = THIS_MODULE,
        .name = "yaffs2",
-       .get_sb = yaffs2_read_super,
-       .kill_sb = kill_block_super,
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39))
+        .mount = yaffs2_mount,
+#else
+        .get_sb = yaffs2_read_super,
+#endif
+       .kill_sb = kill_block_super,
        .fs_flags = FS_REQUIRES_DEV,
 };
 #else
@@ -3112,8 +3149,8 @@ static char *yaffs_dump_dev_part1(char *buf, struct yaffs_dev *dev)
                                dev->oldest_dirty_gc_count);
        buf += sprintf(buf, "n_gc_blocks.......... %u\n", dev->n_gc_blocks);
        buf += sprintf(buf, "bg_gcs............... %u\n", dev->bg_gcs);
-       buf += sprintf(buf, "n_retired_writes..... %u\n",
-                               dev->n_retired_writes);
+       buf += sprintf(buf, "n_retried_writes..... %u\n",
+                               dev->n_retried_writes);
        buf += sprintf(buf, "n_retired_blocks..... %u\n",
                                dev->n_retired_blocks);
        buf += sprintf(buf, "n_ecc_fixed.......... %u\n", dev->n_ecc_fixed);