[PATCH 19/24] AFS: Add TestSetPageError()

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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