nfs: clean up PG_* flags

Remove unused flags PG_NEED_COMMIT and PG_NEED_RESCHED.
Add comments describing how each flag is used.

Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h
index c6a587f..eb2eb63 100644 (file)
--- a/include/linux/nfs_page.h
+++ b/include/linux/nfs_page.h
@@ -22,12 +22,10 @@
  * Valid flags for a dirty buffer
  */
 enum {
-       PG_BUSY = 0,
-       PG_MAPPED,
-       PG_CLEAN,
-       PG_NEED_COMMIT,
-       PG_NEED_RESCHED,
-       PG_COMMIT_TO_DS,
+       PG_BUSY = 0,            /* nfs_{un}lock_request */
+       PG_MAPPED,              /* page private set for buffered io */
+       PG_CLEAN,               /* write succeeded */
+       PG_COMMIT_TO_DS,        /* used by pnfs layouts */
 };
 
 struct nfs_inode;