From ce7c936633dc74a980def482cd95009e1c20d061 Mon Sep 17 00:00:00 2001
From: Jiacheng Guo <guojiacheng@espressif.com>
Date: Thu, 25 Nov 2021 11:19:08 +0800
Subject: [PATCH] vfs: reduce lock in vfs_select

---
 components/vfs/vfs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/components/vfs/vfs.c b/components/vfs/vfs.c
index 9fb4c592ee..36cf2f22d0 100644
--- a/components/vfs/vfs.c
+++ b/components/vfs/vfs.c
@@ -1045,13 +1045,13 @@ int esp_vfs_select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *errorfds
         vSemaphoreDelete(sel_sem.sem);
         sel_sem.sem = NULL;
     }
+    _lock_acquire(&s_fd_table_lock);
     for (int fd = 0; fd < nfds; ++fd) {
-        _lock_acquire(&s_fd_table_lock);
         if (s_fd_table[fd].has_pending_close) {
             s_fd_table[fd] = FD_TABLE_ENTRY_UNUSED;
         }
-        _lock_release(&s_fd_table_lock);
     }
+    _lock_release(&s_fd_table_lock);
     free(vfs_fds_triple);
     free(driver_args);