[Linux-cachefs] [PATCH 2/7] Fscache: Implement uncaching single no-data page
Li Wang
liwang at ubuntukylin.com
Tue Nov 12 01:25:35 UTC 2013
Similar to the routine for multiple pages except
that it takes page * as input rather than list head *.
Signed-off-by: Li Wang <liwang at ubuntukylin.com>
---
fs/fscache/page.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/fs/fscache/page.c b/fs/fscache/page.c
index 7f5c658..0c69f72 100644
--- a/fs/fscache/page.c
+++ b/fs/fscache/page.c
@@ -721,6 +721,14 @@ nobufs:
}
EXPORT_SYMBOL(__fscache_alloc_page);
+void __fscache_readpage_cancel(struct fscache_cookie *cookie,
+ struct page *page)
+{
+ if (PageFsCache(page))
+ __fscache_uncache_page(cookie, page);
+}
+EXPORT_SYMBOL(__fscache_readpage_cancel);
+
/*
* Unmark pages allocate in the readahead code path (via:
* fscache_readpages_or_alloc) after delegating to the base filesystem
--
1.7.9.5
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