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authorEric Biggers <ebiggers@google.com>2018-01-06 09:45:44 -0800
committerAl Viro <viro@zeniv.linux.org.uk>2018-01-06 13:47:20 -0500
commit105f2b7096075eacb6d2c83a6e00b652c2951063 (patch)
treedcbaf6f6ad5f44426a295d6e5aebc329e5355440 /fs/eventfd.c
parentb6364572d641c8eba9eab9bcc31d8962f96ddf15 (diff)
downloadop-kernel-dev-105f2b7096075eacb6d2c83a6e00b652c2951063.zip
op-kernel-dev-105f2b7096075eacb6d2c83a6e00b652c2951063.tar.gz
eventfd: fold eventfd_ctx_get() into eventfd_ctx_fileget()
eventfd_ctx_get() is not used outside of eventfd.c, so unexport it and fold it into eventfd_ctx_fileget(). (eventfd_ctx_get() was apparently added years ago for KVM irqfd's, but was never used.) Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/eventfd.c')
-rw-r--r--fs/eventfd.c21
1 files changed, 6 insertions, 15 deletions
diff --git a/fs/eventfd.c b/fs/eventfd.c
index 6138d2b..bc0105a 100644
--- a/fs/eventfd.c
+++ b/fs/eventfd.c
@@ -80,24 +80,11 @@ static void eventfd_free(struct kref *kref)
}
/**
- * eventfd_ctx_get - Acquires a reference to the internal eventfd context.
- * @ctx: [in] Pointer to the eventfd context.
- *
- * Returns: In case of success, returns a pointer to the eventfd context.
- */
-struct eventfd_ctx *eventfd_ctx_get(struct eventfd_ctx *ctx)
-{
- kref_get(&ctx->kref);
- return ctx;
-}
-EXPORT_SYMBOL_GPL(eventfd_ctx_get);
-
-/**
* eventfd_ctx_put - Releases a reference to the internal eventfd context.
* @ctx: [in] Pointer to eventfd context.
*
* The eventfd context reference must have been previously acquired either
- * with eventfd_ctx_get() or eventfd_ctx_fdget().
+ * with eventfd_ctx_fdget() or eventfd_ctx_fileget().
*/
void eventfd_ctx_put(struct eventfd_ctx *ctx)
{
@@ -382,10 +369,14 @@ EXPORT_SYMBOL_GPL(eventfd_ctx_fdget);
*/
struct eventfd_ctx *eventfd_ctx_fileget(struct file *file)
{
+ struct eventfd_ctx *ctx;
+
if (file->f_op != &eventfd_fops)
return ERR_PTR(-EINVAL);
- return eventfd_ctx_get(file->private_data);
+ ctx = file->private_data;
+ kref_get(&ctx->kref);
+ return ctx;
}
EXPORT_SYMBOL_GPL(eventfd_ctx_fileget);
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