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 a8a5f843e3cf6f8eff76a527d88da7c4d969a405..47615d0e1d9c722226d4f5dd05b4f1fde57eb84d 100644 (file)
--- 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;