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-rw-r--r--fs/fscache/page.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/fs/fscache/page.c b/fs/fscache/page.c
index a2a5d19ece6a..3f7a59bfa7ad 100644
--- a/fs/fscache/page.c
+++ b/fs/fscache/page.c
@@ -954,3 +954,43 @@ void fscache_mark_pages_cached(struct fscache_retrieval *op,
pagevec_reinit(pagevec);
}
EXPORT_SYMBOL(fscache_mark_pages_cached);
+
+/*
+ * Uncache all the pages in an inode that are marked PG_fscache, assuming them
+ * to be associated with the given cookie.
+ */
+void __fscache_uncache_all_inode_pages(struct fscache_cookie *cookie,
+ struct inode *inode)
+{
+ struct address_space *mapping = inode->i_mapping;
+ struct pagevec pvec;
+ pgoff_t next;
+ int i;
+
+ _enter("%p,%p", cookie, inode);
+
+ if (!mapping || mapping->nrpages == 0) {
+ _leave(" [no pages]");
+ return;
+ }
+
+ pagevec_init(&pvec, 0);
+ next = 0;
+ do {
+ if (!pagevec_lookup(&pvec, mapping, next, PAGEVEC_SIZE))
+ break;
+ for (i = 0; i < pagevec_count(&pvec); i++) {
+ struct page *page = pvec.pages[i];
+ next = page->index;
+ if (PageFsCache(page)) {
+ __fscache_wait_on_page_write(cookie, page);
+ __fscache_uncache_page(cookie, page);
+ }
+ }
+ pagevec_release(&pvec);
+ cond_resched();
+ } while (++next);
+
+ _leave("");
+}
+EXPORT_SYMBOL(__fscache_uncache_all_inode_pages);