[PATCH] set_page_dirty() return value fixes

We need set_page_dirty() to return true if it actually transitioned the page
from a clean to dirty state.  This wasn't right in a couple of places.  Do a
kernel-wide audit, fix things up.

This leaves open the possibility of returning a negative errno from
set_page_dirty() sometime in the future.  But we don't do that at present.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 0ad70c1e5e55..092cfaee0cd2 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -350,7 +350,7 @@ struct address_space_operations {
         /* Write back some dirty pages from this mapping. */
         int (*writepages)(struct address_space *, struct writeback_control *);
 
-        /* Set a page dirty */
+        /* Set a page dirty.  Return true if this dirtied it */
         int (*set_page_dirty)(struct page *page);
 
         int (*readpages)(struct file *filp, struct address_space *mapping,