mm: export filemap_check_errors() to modules

Can be used by fuse, btrfs and f2fs to replace opencoded variants.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

diff --git a/include/linux/fs.h b/include/linux/fs.h
index dd288148a6b15f2ea958441e628f5ed2a729faff..6f2536a3a916918907bb1722ba67efb9983b64ad 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2507,6 +2507,7 @@ extern int __filemap_fdatawrite_range(struct address_space *mapping,
                                loff_t start, loff_t end, int sync_mode);
 extern int filemap_fdatawrite_range(struct address_space *mapping,
                                loff_t start, loff_t end);
+extern int filemap_check_errors(struct address_space *mapping);
 
 extern int vfs_fsync_range(struct file *file, loff_t start, loff_t end,
                           int datasync);

diff --git a/mm/filemap.c b/mm/filemap.c
index 20f3b1f33f0e0f83486bba4df1c620f4ac8110f0..6d92935dcf71d79c1c902774d666c738ed2479ae 100644 (file)
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -254,7 +254,7 @@ void delete_from_page_cache(struct page *page)
 }
 EXPORT_SYMBOL(delete_from_page_cache);
 
-static int filemap_check_errors(struct address_space *mapping)
+int filemap_check_errors(struct address_space *mapping)
 {
        int ret = 0;
        /* Check for outstanding write errors */
@@ -266,6 +266,7 @@ static int filemap_check_errors(struct address_space *mapping)
                ret = -EIO;
        return ret;
 }
+EXPORT_SYMBOL(filemap_check_errors);
 
 /**
  * __filemap_fdatawrite_range - start writeback on mapping dirty pages in range