Author: dchagin
Date: Sat Jul 8 21:08:22 2017
New Revision: 320817
URL: https://svnweb.freebsd.org/changeset/base/320817
Log:
Don't take a lock around atomic operation.
MFC after: 3 weeks
Modified:
head/sys/fs/fdescfs/fdesc_vfsops.c
Modified: head/sys/fs/fdescfs/fdesc_vfsops.c
==============================================================================
--- head/sys/fs/fdescfs/fdesc_vfsops.c Sat Jul 8 21:05:28 2017
(r320816)
+++ head/sys/fs/fdescfs/fdesc_vfsops.c Sat Jul 8 21:08:22 2017
(r320817)
@@ -123,7 +123,6 @@ static int
fdesc_unmount(struct mount *mp, int mntflags)
{
struct fdescmount *fmp;
- caddr_t data;
int error, flags;
flags = 0;
@@ -148,15 +147,10 @@ fdesc_unmount(struct mount *mp, int mntflags)
return (error);
/*
- * Finally, throw away the fdescmount structure. Hold the hashmtx to
- * protect the fdescmount structure.
+ * Finally, throw away the fdescmount structure.
*/
- mtx_lock(&fdesc_hashmtx);
- data = mp->mnt_data;
mp->mnt_data = NULL;
- mtx_unlock(&fdesc_hashmtx);
- free(data, M_FDESCMNT); /* XXX */
-
+ free(fmp, M_FDESCMNT);
return (0);
}
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