mm: implement writeback livelock avoidance using page tagging

[platform/adaptation/renesas_rcar/renesas_kernel.git] / include / linux / fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 68ca1b0..488efec 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -53,6 +53,7 @@ struct inodes_stat_t {
 #define MAY_APPEND 8
 #define MAY_ACCESS 16
 #define MAY_OPEN 32
+#define MAY_CHDIR 64
 
 /*
  * flags in file.f_mode.  Note that FMODE_READ and FMODE_WRITE must correspond
@@ -415,7 +416,8 @@ struct buffer_head;
 typedef int (get_block_t)(struct inode *inode, sector_t iblock,
                        struct buffer_head *bh_result, int create);
 typedef void (dio_iodone_t)(struct kiocb *iocb, loff_t offset,
-                       ssize_t bytes, void *private);
+                       ssize_t bytes, void *private, int ret,
+                       bool is_async);
 
 /*
  * Attribute flags.  These should be or-ed together to figure out what
@@ -685,6 +687,7 @@ struct block_device {
  */
 #define PAGECACHE_TAG_DIRTY    0
 #define PAGECACHE_TAG_WRITEBACK        1
+#define PAGECACHE_TAG_TOWRITE  2
 
 int mapping_tagged(struct address_space *mapping, int tag);