From: Mateusz Guzik <mjguzik@gmail.com>
Date: Wed, 5 Mar 2025 12:36:42 +0000 (+0100)
Subject: fs: use fput_close_sync() in close()
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=3e46a92a27c2927fcef996ba06cbe299da629c28;p=users%2Fjedix%2Flinux-maple.git

fs: use fput_close_sync() in close()

This bumps open+close rate by 1% on Sapphire Rapids by eliding one
atomic.

It would be higher if it was not for several other slowdowns of the same
nature.

Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
Link: https://lore.kernel.org/r/20250305123644.554845-3-mjguzik@gmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
---

diff --git a/fs/open.c b/fs/open.c
index a8a5f843e3cf6..47615d0e1d9c7 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -1576,7 +1576,7 @@ SYSCALL_DEFINE1(close, unsigned int, fd)
 	 * We're returning to user space. Don't bother
 	 * with any delayed fput() cases.
 	 */
-	__fput_sync(file);
+	fput_close_sync(file);
 
 	if (likely(retval == 0))
 		return 0;