Author: mjg
Date: Sun Nov 2 01:13:11 2014
New Revision: 273956
URL: https://svnweb.freebsd.org/changeset/base/273956
Log:
filedesc: lock filedesc lock in fdcloseexec only when needed
Modified:
head/sys/kern/kern_descrip.c
Modified: head/sys/kern/kern_descrip.c
==============================================================================
--- head/sys/kern/kern_descrip.c Sun Nov 2 00:11:25 2014
(r273955)
+++ head/sys/kern/kern_descrip.c Sun Nov 2 01:13:11 2014
(r273956)
@@ -2160,19 +2160,17 @@ fdcloseexec(struct thread *td)
fdp = td->td_proc->p_fd;
KASSERT(fdp->fd_refcnt == 1, ("the fdtable should not be shared"));
- FILEDESC_XLOCK(fdp);
for (i = 0; i <= fdp->fd_lastfile; i++) {
fde = &fdp->fd_ofiles[i];
fp = fde->fde_file;
if (fp != NULL && (fp->f_type == DTYPE_MQUEUE ||
(fde->fde_flags & UF_EXCLOSE))) {
+ FILEDESC_XLOCK(fdp);
fdfree(fdp, i);
(void) closefp(fdp, i, fp, td, 0);
/* closefp() drops the FILEDESC lock. */
- FILEDESC_XLOCK(fdp);
}
}
- FILEDESC_XUNLOCK(fdp);
}
/*
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