diff --git a/src/add-ons/kernel/file_systems/fat/file.c b/src/add-ons/kernel/file_systems/fat/file.c
index 54eba201df..79ed6b0861 100644
--- a/src/add-ons/kernel/file_systems/fat/file.c
+++ b/src/add-ons/kernel/file_systems/fat/file.c
@@ -1479,12 +1479,13 @@ dosfs_can_page(fs_volume _fs, fs_vnode _v, fs_cookie _cookie)
 
 status_t
 dosfs_read_pages(fs_volume _fs, fs_vnode _node, fs_cookie _cookie, off_t pos,
-	const iovec *vecs, size_t count, size_t *_numBytes, bool reenter)
+	const iovec *vecs, size_t count, size_t *_numBytes, bool mayBlock,
+	bool reenter)
 {
-	nspace  *vol = (nspace *)_fs;
-	vnode   *node = (vnode *)_node;
+	nspace *vol = (nspace *)_fs;
+	vnode *node = (vnode *)_node;
 	status_t status;
-	
+
 	if (check_nspace_magic(vol, "dosfs_read_pages")
 		|| check_vnode_magic(node, "dosfs_read_pages"))
 		return EINVAL;
@@ -1492,6 +1493,7 @@ dosfs_read_pages(fs_volume _fs, fs_vnode _node, fs_cookie _cookie, off_t pos,
 	if (node->cache == NULL)
 		return(B_BAD_VALUE);
 
+	// TODO: respect "mayBlock"!
 	LOCK_VOL(vol);
 	status = file_cache_read_pages(node->cache, pos, vecs, count,
 		_numBytes);
@@ -1503,10 +1505,11 @@ dosfs_read_pages(fs_volume _fs, fs_vnode _node, fs_cookie _cookie, off_t pos,
 
 status_t
 dosfs_write_pages(fs_volume _fs, fs_vnode _node, fs_cookie _cookie, off_t pos,
-	const iovec *vecs, size_t count, size_t *_numBytes, bool reenter)
+	const iovec *vecs, size_t count, size_t *_numBytes, bool mayBlock,
+	bool reenter)
 {
-	nspace  *vol = (nspace *)_fs;
-	vnode   *node = (vnode *)_node;
+	nspace *vol = (nspace *)_fs;
+	vnode *node = (vnode *)_node;
 	status_t status;
 
 	if (check_nspace_magic(vol, "dosfs_write_pages")
@@ -1516,6 +1519,7 @@ dosfs_write_pages(fs_volume _fs, fs_vnode _node, fs_cookie _cookie, off_t pos,
 	if (node->cache == NULL)
 		return B_BAD_VALUE;
 
+	// TODO: respect "mayBlock"!
 	LOCK_VOL(vol);
 	status = file_cache_write_pages(node->cache, pos, vecs, count,
 		_numBytes);
diff --git a/src/add-ons/kernel/file_systems/fat/file.h b/src/add-ons/kernel/file_systems/fat/file.h
index e61c64494a..900b3117b1 100644
--- a/src/add-ons/kernel/file_systems/fat/file.h
+++ b/src/add-ons/kernel/file_systems/fat/file.h
@@ -31,8 +31,8 @@ status_t	dosfs_get_file_map(void *fs, void *node, off_t pos, size_t reqLen,
 				struct file_io_vec *vecs, size_t *_count);
 bool		dosfs_can_page(fs_volume _fs, fs_vnode _v, fs_cookie _cookie);
 status_t	dosfs_read_pages(fs_volume _fs, fs_vnode _node, fs_cookie _cookie, off_t pos,
-				const iovec *vecs, size_t count, size_t *_numBytes, bool reenter);
+				const iovec *vecs, size_t count, size_t *_numBytes, bool mayBlock, bool reenter);
 status_t	dosfs_write_pages(fs_volume _fs, fs_vnode _node, fs_cookie _cookie, off_t pos,
-				const iovec *vecs, size_t count, size_t *_numBytes, bool reenter);
+				const iovec *vecs, size_t count, size_t *_numBytes, bool mayBlock, bool reenter);
 
 #endif
diff --git a/src/add-ons/kernel/file_systems/fat/rtc_info.h b/src/add-ons/kernel/file_systems/fat/rtc_info.h
index 024acbf2ae..4850e42959 100644
--- a/src/add-ons/kernel/file_systems/fat/rtc_info.h
+++ b/src/add-ons/kernel/file_systems/fat/rtc_info.h
@@ -18,6 +18,6 @@ typedef struct {
 
 #define RTC_SETTINGS_FILE	"RTC_time_settings"
 
-extern _IMPEXP_KERNEL status_t get_rtc_info(rtc_info *);
+extern status_t get_rtc_info(rtc_info *);
 
 #endif /* _RTC_INFO_H */