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Subject[PATCH 17/45] FS-Cache: Bit waiting helpers [ver #41]
Date
Add helpers for use with wait_on_bit().

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

fs/fscache/fsc-internal.h | 3 +++
fs/fscache/fsc-main.c | 20 ++++++++++++++++++++
2 files changed, 23 insertions(+), 0 deletions(-)


diff --git a/fs/fscache/fsc-internal.h b/fs/fscache/fsc-internal.h
index 8f1beb5..5418101 100644
--- a/fs/fscache/fsc-internal.h
+++ b/fs/fscache/fsc-internal.h
@@ -58,6 +58,9 @@ extern unsigned fscache_defer_create;
extern unsigned fscache_debug;
extern struct kobject *fscache_root;

+extern int fscache_wait_bit(void *);
+extern int fscache_wait_bit_interruptible(void *);
+
/*
* fsc-stats.c
*/
diff --git a/fs/fscache/fsc-main.c b/fs/fscache/fsc-main.c
index 5ecbaa7..714c0ef 100644
--- a/fs/fscache/fsc-main.c
+++ b/fs/fscache/fsc-main.c
@@ -102,3 +102,23 @@ static void __exit fscache_exit(void)
}

module_exit(fscache_exit);
+
+/*
+ * wait_on_bit() sleep function for uninterruptible waiting
+ */
+int fscache_wait_bit(void *flags)
+{
+ schedule();
+ return 0;
+}
+EXPORT_SYMBOL(fscache_wait_bit);
+
+/*
+ * wait_on_bit() sleep function for interruptible waiting
+ */
+int fscache_wait_bit_interruptible(void *flags)
+{
+ schedule();
+ return signal_pending(current);
+}
+EXPORT_SYMBOL(fscache_wait_bit_interruptible);


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