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Take filedesc lock only for reading when allocating new fdtable.

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Code populating the table does this already.

MFC after:	1 week
This commit is contained in:
Mateusz Guzik 2014-03-21 01:34:19 +00:00
parent 2df503a63a
commit 4c73e705a5
1 changed files with 2 additions and 2 deletions
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4
sys/kern/kern_descrip.c
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@ -1808,7 +1808,7 @@ fdinit(struct filedesc *fdp)
newfdp = malloc(sizeof *newfdp, M_FILEDESC, M_WAITOK | M_ZERO);
FILEDESC_LOCK_INIT(&newfdp->fd_fd);
if (fdp != NULL) {
FILEDESC_XLOCK(fdp);
FILEDESC_SLOCK(fdp);
newfdp->fd_fd.fd_cdir = fdp->fd_cdir;
if (newfdp->fd_fd.fd_cdir)
VREF(newfdp->fd_fd.fd_cdir);
@ -1818,7 +1818,7 @@ fdinit(struct filedesc *fdp)
newfdp->fd_fd.fd_jdir = fdp->fd_jdir;
if (newfdp->fd_fd.fd_jdir)
VREF(newfdp->fd_fd.fd_jdir);
FILEDESC_XUNLOCK(fdp);
FILEDESC_SUNLOCK(fdp);
}
/* Create the file descriptor table. */