3 files changed, 23 insertions, 1 deletions

diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c
index 99b6f329ba23..5109f1d5e7ff 100644
--- a/fs/reiserfs/file.c
+++ b/fs/reiserfs/file.c
@@ -48,6 +48,11 @@ static int reiserfs_file_release(struct inode *inode, struct file *filp)
         }
 
         mutex_lock(&inode->i_mutex);
+
+        mutex_lock(&(REISERFS_I(inode)->i_mmap));
+        if (REISERFS_I(inode)->i_flags & i_ever_mapped)
+                REISERFS_I(inode)->i_flags &= ~i_pack_on_close_mask;
+
         reiserfs_write_lock(inode->i_sb);
         /* freeing preallocation only involves relogging blocks that
          * are already in the current transaction.  preallocation gets
@@ -100,11 +105,24 @@ static int reiserfs_file_release(struct inode *inode, struct file *filp)
                 err = reiserfs_truncate_file(inode, 0);
         }
       out:
+        mutex_unlock(&(REISERFS_I(inode)->i_mmap));
         mutex_unlock(&inode->i_mutex);
         reiserfs_write_unlock(inode->i_sb);
         return err;
 }
 
+static int reiserfs_file_mmap(struct file *file, struct vm_area_struct *vma)
+{
+        struct inode *inode;
+
+        inode = file->f_path.dentry->d_inode;
+        mutex_lock(&(REISERFS_I(inode)->i_mmap));
+        REISERFS_I(inode)->i_flags |= i_ever_mapped;
+        mutex_unlock(&(REISERFS_I(inode)->i_mmap));
+
+        return generic_file_mmap(file, vma);
+}
+
 static void reiserfs_vfs_truncate_file(struct inode *inode)
 {
         reiserfs_truncate_file(inode, 1);
@@ -1527,7 +1545,7 @@ const struct file_operations reiserfs_file_operations = {
 #ifdef CONFIG_COMPAT
         .compat_ioctl = reiserfs_compat_ioctl,
 #endif
-        .mmap = generic_file_mmap,
+        .mmap = reiserfs_file_mmap,
         .open = generic_file_open,
         .release = reiserfs_file_release,
         .fsync = reiserfs_sync_file,
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index f3d1c4a77979..9fcbfe316977 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -1125,6 +1125,7 @@ static void init_inode(struct inode *inode, struct treepath *path)
         REISERFS_I(inode)->i_prealloc_count = 0;
         REISERFS_I(inode)->i_trans_id = 0;
         REISERFS_I(inode)->i_jl = NULL;
+        mutex_init(&(REISERFS_I(inode)->i_mmap));
         reiserfs_init_acl_access(inode);
         reiserfs_init_acl_default(inode);
         reiserfs_init_xattr_rwsem(inode);
@@ -1832,6 +1833,7 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th,
         REISERFS_I(inode)->i_attrs =
             REISERFS_I(dir)->i_attrs & REISERFS_INHERIT_MASK;
         sd_attrs_to_i_attrs(REISERFS_I(inode)->i_attrs, inode);
+        mutex_init(&(REISERFS_I(inode)->i_mmap));
         reiserfs_init_acl_access(inode);
         reiserfs_init_acl_default(inode);
         reiserfs_init_xattr_rwsem(inode);
diff --git a/include/linux/reiserfs_fs_i.h b/include/linux/reiserfs_fs_i.h
index 5b3b297aa2c5..ce3663fb0101 100644
--- a/include/linux/reiserfs_fs_i.h
+++ b/include/linux/reiserfs_fs_i.h
@@ -25,6 +25,7 @@ typedef enum {
         i_link_saved_truncate_mask = 0x0020,
         i_has_xattr_dir = 0x0040,
         i_data_log = 0x0080,
+        i_ever_mapped = 0x0100
 } reiserfs_inode_flags;
 
 struct reiserfs_inode_info {
@@ -52,6 +53,7 @@ struct reiserfs_inode_info {
          ** flushed */
         unsigned long i_trans_id;
         struct reiserfs_journal_list *i_jl;
+        struct mutex i_mmap;
 #ifdef CONFIG_REISERFS_FS_POSIX_ACL
         struct posix_acl *i_acl_access;
         struct posix_acl *i_acl_default;