From 0b2b5b781ca441c83840d49ab291e58c27cffafd Mon Sep 17 00:00:00 2001
From: hujun5 <hujun5@xiaomi.com>
Date: Thu, 15 Jun 2023 09:56:46 +0800
Subject: [PATCH] fs: remove sched_[un]lock

Signed-off-by: hujun5 <hujun5@xiaomi.com>
---
 fs/aio/aio_cancel.c       |  2 --
 fs/mqueue/mq_unlink.c     |  3 ---
 fs/procfs/fs_procfs.c     |  3 ---
 fs/semaphore/sem_open.c   | 11 -----------
 fs/semaphore/sem_unlink.c |  3 ---
 5 files changed, 22 deletions(-)

diff --git a/fs/aio/aio_cancel.c b/fs/aio/aio_cancel.c
index ac8b4119a9..a3a6ca9cd9 100644
--- a/fs/aio/aio_cancel.c
+++ b/fs/aio/aio_cancel.c
@@ -100,7 +100,6 @@ int aio_cancel(int fildes, FAR struct aiocb *aiocbp)
    */
 
   ret = AIO_ALLDONE;
-  sched_lock();
   aio_lock();
 
   if (aiocbp)
@@ -220,7 +219,6 @@ int aio_cancel(int fildes, FAR struct aiocb *aiocbp)
     }
 
   aio_unlock();
-  sched_unlock();
   return ret;
 }
 
diff --git a/fs/mqueue/mq_unlink.c b/fs/mqueue/mq_unlink.c
index 9360ca2f7f..95e92dea64 100644
--- a/fs/mqueue/mq_unlink.c
+++ b/fs/mqueue/mq_unlink.c
@@ -112,7 +112,6 @@ int file_mq_unlink(FAR const char *mq_name)
 
   SETUP_SEARCH(&desc, fullpath, false);
 
-  sched_lock();
   ret = inode_find(&desc);
   if (ret < 0)
     {
@@ -175,7 +174,6 @@ int file_mq_unlink(FAR const char *mq_name)
   inode_unlock();
   mq_inode_release(inode);
   RELEASE_SEARCH(&desc);
-  sched_unlock();
   return OK;
 
 errout_with_lock:
@@ -186,7 +184,6 @@ errout_with_inode:
 
 errout_with_search:
   RELEASE_SEARCH(&desc);
-  sched_unlock();
   return ret;
 }
 
diff --git a/fs/procfs/fs_procfs.c b/fs/procfs/fs_procfs.c
index 638b72f77b..c8fc8ba0d7 100644
--- a/fs/procfs/fs_procfs.c
+++ b/fs/procfs/fs_procfs.c
@@ -1181,8 +1181,6 @@ int procfs_register(FAR const struct procfs_entry_s *entry)
   newcount = g_procfs_entrycount + 1;
   newsize  = newcount * sizeof(struct procfs_entry_s);
 
-  sched_lock();
-
   newtable = (FAR struct procfs_entry_s *)
     kmm_realloc(g_procfs_entries, newsize);
   if (newtable != NULL)
@@ -1199,7 +1197,6 @@ int procfs_register(FAR const struct procfs_entry_s *entry)
       ret = OK;
     }
 
-  sched_unlock();
   return ret;
 }
 #endif
diff --git a/fs/semaphore/sem_open.c b/fs/semaphore/sem_open.c
index b7b8e9862d..7b5d2036ac 100644
--- a/fs/semaphore/sem_open.c
+++ b/fs/semaphore/sem_open.c
@@ -118,15 +118,6 @@ FAR sem_t *sem_open(FAR const char *name, int oflags, ...)
         }
     }
 
-  /* The POSIX specification requires that the "check for the existence
-   * of a semaphore and the creation of the semaphore if it does not
-   * exist shall be atomic with respect to other processes executing
-   * sem_open()..."  A simple sched_lock() should be sufficient to meet
-   * this requirement.
-   */
-
-  sched_lock();
-
   /* Get the full path to the semaphore */
 
   snprintf(fullpath, MAX_SEMPATH,
@@ -254,7 +245,6 @@ FAR sem_t *sem_open(FAR const char *name, int oflags, ...)
     }
 
   RELEASE_SEARCH(&desc);
-  sched_unlock();
   return sem;
 
 errout_with_inode:
@@ -263,7 +253,6 @@ errout_with_inode:
 errout_with_lock:
   RELEASE_SEARCH(&desc);
   set_errno(errcode);
-  sched_unlock();
   return SEM_FAILED;
 }
 
diff --git a/fs/semaphore/sem_unlink.c b/fs/semaphore/sem_unlink.c
index f363c2a534..785d942922 100644
--- a/fs/semaphore/sem_unlink.c
+++ b/fs/semaphore/sem_unlink.c
@@ -78,7 +78,6 @@ int sem_unlink(FAR const char *name)
 
   SETUP_SEARCH(&desc, fullpath, false);
 
-  sched_lock();
   ret = inode_find(&desc);
   if (ret < 0)
     {
@@ -143,7 +142,6 @@ int sem_unlink(FAR const char *name)
   inode_unlock();
   ret = sem_close(&inode->u.i_nsem->ns_sem);
   RELEASE_SEARCH(&desc);
-  sched_unlock();
   return ret;
 
 errout_with_lock:
@@ -155,6 +153,5 @@ errout_with_inode:
 errout_with_search:
   RELEASE_SEARCH(&desc);
   set_errno(errcode);
-  sched_unlock();
   return ERROR;
 }