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Subject[PATCH 11/20] signal: Pass pid type into send_sigio_to_task & send_sigurg_to_task
This information is already present and using it directly simplifies the logic
of the code.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
---
fs/fcntl.c | 26 +++++++++-----------------
1 file changed, 9 insertions(+), 17 deletions(-)

diff --git a/fs/fcntl.c b/fs/fcntl.c
index 1523588fd759..5d596a00f40b 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -723,7 +723,7 @@ static inline int sigio_perm(struct task_struct *p,

static void send_sigio_to_task(struct task_struct *p,
struct fown_struct *fown,
- int fd, int reason, int group)
+ int fd, int reason, enum pid_type type)
{
/*
* F_SETSIG can change ->signum lockless in parallel, make
@@ -767,11 +767,11 @@ static void send_sigio_to_task(struct task_struct *p,
else
si.si_band = mangle_poll(band_table[reason - POLL_IN]);
si.si_fd = fd;
- if (!do_send_sig_info(signum, &si, p, group))
+ if (!do_send_sig_info(signum, &si, p, type != PIDTYPE_PID))
break;
/* fall-through: fall back on the old plain SIGIO signal */
case 0:
- do_send_sig_info(SIGIO, SEND_SIG_PRIV, p, group);
+ do_send_sig_info(SIGIO, SEND_SIG_PRIV, p, type != PIDTYPE_PID);
}
}

@@ -780,14 +780,10 @@ void send_sigio(struct fown_struct *fown, int fd, int band)
struct task_struct *p;
enum pid_type type;
struct pid *pid;
- int group = 1;

read_lock(&fown->lock);

type = fown->pid_type;
- if (type == PIDTYPE_PID)
- group = 0;
-
pid = fown->pid;
if (!pid)
goto out_unlock_fown;
@@ -795,12 +791,12 @@ void send_sigio(struct fown_struct *fown, int fd, int band)
if (type <= PIDTYPE_TGID) {
rcu_read_lock();
p = pid_task(pid, PIDTYPE_PID);
- send_sigio_to_task(p, fown, fd, band, group);
+ send_sigio_to_task(p, fown, fd, band, type);
rcu_read_unlock();
} else {
read_lock(&tasklist_lock);
do_each_pid_task(pid, type, p) {
- send_sigio_to_task(p, fown, fd, band, group);
+ send_sigio_to_task(p, fown, fd, band, type);
} while_each_pid_task(pid, type, p);
read_unlock(&tasklist_lock);
}
@@ -809,10 +805,10 @@ void send_sigio(struct fown_struct *fown, int fd, int band)
}

static void send_sigurg_to_task(struct task_struct *p,
- struct fown_struct *fown, int group)
+ struct fown_struct *fown, enum pid_type type)
{
if (sigio_perm(p, fown, SIGURG))
- do_send_sig_info(SIGURG, SEND_SIG_PRIV, p, group);
+ do_send_sig_info(SIGURG, SEND_SIG_PRIV, p, type != PIDTYPE_PID);
}

int send_sigurg(struct fown_struct *fown)
@@ -820,15 +816,11 @@ int send_sigurg(struct fown_struct *fown)
struct task_struct *p;
enum pid_type type;
struct pid *pid;
- int group = 1;
int ret = 0;

read_lock(&fown->lock);

type = fown->pid_type;
- if (type == PIDTYPE_PID)
- group = 0;
-
pid = fown->pid;
if (!pid)
goto out_unlock_fown;
@@ -838,12 +830,12 @@ int send_sigurg(struct fown_struct *fown)
if (type <= PIDTYPE_TGID) {
rcu_read_lock();
p = pid_task(pid, PIDTYPE_PID);
- send_sigurg_to_task(p, fown, group);
+ send_sigurg_to_task(p, fown, type);
rcu_read_unlock();
} else {
read_lock(&tasklist_lock);
do_each_pid_task(pid, type, p) {
- send_sigurg_to_task(p, fown, group);
+ send_sigurg_to_task(p, fown, type);
} while_each_pid_task(pid, type, p);
read_unlock(&tasklist_lock);
}
--
2.17.1
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