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Subject[PATCH 17/22] AFS: Add TestSetPageError()
Date
Add a TestSetPageError() macro to the suite of page flag manipulators.  This
can be used by AFS to prevent over-excision of rejected writes from the page
cache.

Signed-off-by: David Howells <dhowells@redhat.com>
---

include/linux/page-flags.h | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index eaf9854..b59506b 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -130,6 +130,7 @@
#define PageError(page) test_bit(PG_error, &(page)->flags)
#define SetPageError(page) set_bit(PG_error, &(page)->flags)
#define ClearPageError(page) clear_bit(PG_error, &(page)->flags)
+#define TestSetPageError(page) test_and_set_bit(PG_error, &(page)->flags)

#define PageReferenced(page) test_bit(PG_referenced, &(page)->flags)
#define SetPageReferenced(page) set_bit(PG_referenced, &(page)->flags)
-
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