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From: John Baldwin <jhb@FreeBSD.org>
Date: Fri, 4 Nov 2011 03:39:31 +0000 (UTC)
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Subject: svn commit: r227069 - in head/sys: fs/devfs kern
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X-List-Received-Date: Fri, 04 Nov 2011 03:39:32 -0000
Author: jhb
Date: Fri Nov 4 03:39:31 2011
New Revision: 227069
URL: http://svn.freebsd.org/changeset/base/227069
Log:
Move the cleanup of f_cdevpriv when the reference count of a devfs
file descriptor drops to zero out of _fdrop() and into devfs_close_f()
as it is only relevant for devfs file descriptors.
Reviewed by: kib
MFC after: 1 week
Modified:
head/sys/fs/devfs/devfs_vnops.c
head/sys/kern/kern_descrip.c
Modified: head/sys/fs/devfs/devfs_vnops.c
==============================================================================
--- head/sys/fs/devfs/devfs_vnops.c Fri Nov 4 02:34:52 2011 (r227068)
+++ head/sys/fs/devfs/devfs_vnops.c Fri Nov 4 03:39:31 2011 (r227069)
@@ -604,6 +604,13 @@ devfs_close_f(struct file *fp, struct th
td->td_fpop = fp;
error = vnops.fo_close(fp, td);
td->td_fpop = fpop;
+
+ /*
+ * The f_cdevpriv cannot be assigned non-NULL value while we
+ * are destroying the file.
+ */
+ if (fp->f_cdevpriv != NULL)
+ devfs_fpdrop(fp);
return (error);
}
Modified: head/sys/kern/kern_descrip.c
==============================================================================
--- head/sys/kern/kern_descrip.c Fri Nov 4 02:34:52 2011 (r227068)
+++ head/sys/kern/kern_descrip.c Fri Nov 4 03:39:31 2011 (r227069)
@@ -2575,12 +2575,6 @@ _fdrop(struct file *fp, struct thread *t
panic("fdrop: count %d", fp->f_count);
if (fp->f_ops != &badfileops)
error = fo_close(fp, td);
- /*
- * The f_cdevpriv cannot be assigned non-NULL value while we
- * are destroying the file.
- */
- if (fp->f_cdevpriv != NULL)
- devfs_fpdrop(fp);
atomic_subtract_int(&openfiles, 1);
crfree(fp->f_cred);
uma_zfree(file_zone, fp);