[PATCH v3 16/47] filelock: drop the IS_* macros

Jeff Layton
2024-01-31T23:03:20Z

These don't add a lot of value over just open-coding the flag check.

Suggested-by: NeilBrown <neilb@suse.de>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
fs/locks.c | 32 +++++++++++++++-----------------
1 file changed, 15 insertions(+), 17 deletions(-)

diff --git a/fs/locks.c b/fs/locks.c
index 149070fd3b66..d685c3fdbea5 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -70,12 +70,6 @@

#include <linux/uaccess.h>

-#define IS_POSIX(fl) (fl->fl_flags & FL_POSIX)
-#define IS_FLOCK(fl) (fl->fl_flags & FL_FLOCK)
-#define IS_LEASE(fl) (fl->fl_flags & (FL_LEASE|FL_DELEG|FL_LAYOUT))
-#define IS_OFDLCK(fl) (fl->fl_flags & FL_OFDLCK)
-#define IS_REMOTELCK(fl) (fl->fl_pid <= 0)
-
static bool lease_breaking(struct file_lock *fl)
{
return fl->fl_flags & (FL_UNLOCK_PENDING | FL_DOWNGRADE_PENDING);
@@ -767,7 +761,7 @@ static void __locks_insert_block(struct file_lock *blocker,
}
waiter->fl_blocker = blocker;
list_add_tail(&waiter->fl_blocked_member, &blocker->fl_blocked_requests);
- if (IS_POSIX(blocker) && !IS_OFDLCK(blocker))
+ if ((blocker->fl_flags & (FL_POSIX|FL_OFDLCK)) == FL_POSIX)
locks_insert_global_blocked(waiter);

/* The requests in waiter->fl_blocked are known to conflict with
@@ -999,7 +993,7 @@ static int posix_locks_deadlock(struct file_lock *caller_fl,
* This deadlock detector can't reasonably detect deadlocks with
* FL_OFDLCK locks, since they aren't owned by a process, per-se.
*/
- if (IS_OFDLCK(caller_fl))
+ if (caller_fl->fl_flags & FL_OFDLCK)
return 0;

while ((block_fl = what_owner_is_waiting_for(block_fl))) {
@@ -2150,10 +2144,13 @@ static pid_t locks_translate_pid(struct file_lock *fl, struct pid_namespace *ns)
pid_t vnr;
struct pid *pid;

- if (IS_OFDLCK(fl))
+ if (fl->fl_flags & FL_OFDLCK)
return -1;
- if (IS_REMOTELCK(fl))
+
+ /* Remote locks report a negative pid value */
+ if (fl->fl_pid <= 0)
return fl->fl_pid;
+
/*
* If the flock owner process is dead and its pid has been already
* freed, the translation below won't work, but we still want to show
@@ -2697,7 +2694,7 @@ static void lock_get_status(struct seq_file *f, struct file_lock *fl,
struct inode *inode = NULL;
unsigned int pid;
struct pid_namespace *proc_pidns = proc_pid_ns(file_inode(f->file)->i_sb);
- int type;
+ int type = fl->fl_type;

pid = locks_translate_pid(fl, proc_pidns);
/*
@@ -2714,19 +2711,21 @@ static void lock_get_status(struct seq_file *f, struct file_lock *fl,
if (repeat)
seq_printf(f, "%*s", repeat - 1 + (int)strlen(pfx), pfx);

- if (IS_POSIX(fl)) {
+ if (fl->fl_flags & FL_POSIX) {
if (fl->fl_flags & FL_ACCESS)
seq_puts(f, "ACCESS");
- else if (IS_OFDLCK(fl))
+ else if (fl->fl_flags & FL_OFDLCK)
seq_puts(f, "OFDLCK");
else
seq_puts(f, "POSIX ");

seq_printf(f, " %s ",
(inode == NULL) ? "*NOINODE*" : "ADVISORY ");
- } else if (IS_FLOCK(fl)) {
+ } else if (fl->fl_flags & FL_FLOCK) {
seq_puts(f, "FLOCK ADVISORY ");
- } else if (IS_LEASE(fl)) {
+ } else if (fl->fl_flags & (FL_LEASE|FL_DELEG|FL_LAYOUT)) {
+ type = target_leasetype(fl);
+
if (fl->fl_flags & FL_DELEG)
seq_puts(f, "DELEG ");
else
@@ -2741,7 +2740,6 @@ static void lock_get_status(struct seq_file *f, struct file_lock *fl,
} else {
seq_puts(f, "UNKNOWN UNKNOWN ");
}
- type = IS_LEASE(fl) ? target_leasetype(fl) : fl->fl_type;

seq_printf(f, "%s ", (type == F_WRLCK) ? "WRITE" :
(type == F_RDLCK) ? "READ" : "UNLCK");
@@ -2753,7 +2751,7 @@ static void lock_get_status(struct seq_file *f, struct file_lock *fl,
} else {
seq_printf(f, "%d <none>:0 ", pid);
}
- if (IS_POSIX(fl)) {
+ if (fl->fl_flags & FL_POSIX) {
if (fl->fl_end == OFFSET_MAX)
seq_printf(f, "%Ld EOF\n", fl->fl_start);
else

--
2.43.0