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Diffstat (limited to 'fs/locks.c')
-rw-r--r--fs/locks.c55
1 files changed, 34 insertions, 21 deletions
diff --git a/fs/locks.c b/fs/locks.c
index e390bd9ae068..a6f54802d277 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -130,6 +130,9 @@
#include <linux/percpu.h>
#include <linux/lglock.h>
+#define CREATE_TRACE_POINTS
+#include <trace/events/filelock.h>
+
#include <asm/uaccess.h>
#define IS_POSIX(fl) (fl->fl_flags & FL_POSIX)
@@ -322,6 +325,7 @@ static int flock_make_lock(struct file *filp, struct file_lock **lock,
return -ENOMEM;
fl->fl_file = filp;
+ fl->fl_owner = filp;
fl->fl_pid = current->tgid;
fl->fl_flags = FL_FLOCK;
fl->fl_type = type;
@@ -1151,7 +1155,6 @@ EXPORT_SYMBOL(posix_lock_file_wait);
int locks_mandatory_locked(struct file *file)
{
struct inode *inode = file_inode(file);
- fl_owner_t owner = current->files;
struct file_lock *fl;
/*
@@ -1161,7 +1164,8 @@ int locks_mandatory_locked(struct file *file)
for (fl = inode->i_flock; fl != NULL; fl = fl->fl_next) {
if (!IS_POSIX(fl))
continue;
- if (fl->fl_owner != owner && fl->fl_owner != (fl_owner_t)file)
+ if (fl->fl_owner != current->files &&
+ fl->fl_owner != file)
break;
}
spin_unlock(&inode->i_lock);
@@ -1201,7 +1205,7 @@ int locks_mandatory_area(int read_write, struct inode *inode,
for (;;) {
if (filp) {
- fl.fl_owner = (fl_owner_t)filp;
+ fl.fl_owner = filp;
fl.fl_flags &= ~FL_SLEEP;
error = __posix_lock_file(inode, &fl, NULL);
if (!error)
@@ -1286,6 +1290,7 @@ static void time_out_leases(struct inode *inode)
before = &inode->i_flock;
while ((fl = *before) && IS_LEASE(fl) && lease_breaking(fl)) {
+ trace_time_out_leases(inode, fl);
if (past_time(fl->fl_downgrade_time))
lease_modify(before, F_RDLCK);
if (past_time(fl->fl_break_time))
@@ -1373,6 +1378,7 @@ int __break_lease(struct inode *inode, unsigned int mode, unsigned int type)
}
if (i_have_this_lease || (mode & O_NONBLOCK)) {
+ trace_break_lease_noblock(inode, new_fl);
error = -EWOULDBLOCK;
goto out;
}
@@ -1384,10 +1390,12 @@ restart:
if (break_time == 0)
break_time++;
locks_insert_block(flock, new_fl);
+ trace_break_lease_block(inode, new_fl);
spin_unlock(&inode->i_lock);
error = wait_event_interruptible_timeout(new_fl->fl_wait,
!new_fl->fl_next, break_time);
spin_lock(&inode->i_lock);
+ trace_break_lease_unblock(inode, new_fl);
locks_delete_block(new_fl);
if (error >= 0) {
if (error == 0)
@@ -1509,6 +1517,8 @@ static int generic_add_lease(struct file *filp, long arg, struct file_lock **flp
int error;
lease = *flp;
+ trace_generic_add_lease(inode, lease);
+
/*
* In the delegation case we need mutual exclusion with
* a number of operations that take the i_mutex. We trylock
@@ -1598,6 +1608,8 @@ static int generic_delete_lease(struct file *filp, struct file_lock **flp)
struct dentry *dentry = filp->f_path.dentry;
struct inode *inode = dentry->d_inode;
+ trace_generic_delete_lease(inode, *flp);
+
for (before = &inode->i_flock;
((fl = *before) != NULL) && IS_LEASE(fl);
before = &fl->fl_next) {
@@ -1936,7 +1948,7 @@ int fcntl_getlk(struct file *filp, unsigned int cmd, struct flock __user *l)
cmd = F_GETLK;
file_lock.fl_flags |= FL_OFDLCK;
- file_lock.fl_owner = (fl_owner_t)filp;
+ file_lock.fl_owner = filp;
}
error = vfs_test_lock(filp, &file_lock);
@@ -2091,7 +2103,7 @@ again:
cmd = F_SETLK;
file_lock->fl_flags |= FL_OFDLCK;
- file_lock->fl_owner = (fl_owner_t)filp;
+ file_lock->fl_owner = filp;
break;
case F_OFD_SETLKW:
error = -EINVAL;
@@ -2100,7 +2112,7 @@ again:
cmd = F_SETLKW;
file_lock->fl_flags |= FL_OFDLCK;
- file_lock->fl_owner = (fl_owner_t)filp;
+ file_lock->fl_owner = filp;
/* Fallthrough */
case F_SETLKW:
file_lock->fl_flags |= FL_SLEEP;
@@ -2158,7 +2170,7 @@ int fcntl_getlk64(struct file *filp, unsigned int cmd, struct flock64 __user *l)
cmd = F_GETLK64;
file_lock.fl_flags |= FL_OFDLCK;
- file_lock.fl_owner = (fl_owner_t)filp;
+ file_lock.fl_owner = filp;
}
error = vfs_test_lock(filp, &file_lock);
@@ -2230,7 +2242,7 @@ again:
cmd = F_SETLK64;
file_lock->fl_flags |= FL_OFDLCK;
- file_lock->fl_owner = (fl_owner_t)filp;
+ file_lock->fl_owner = filp;
break;
case F_OFD_SETLKW:
error = -EINVAL;
@@ -2239,7 +2251,7 @@ again:
cmd = F_SETLKW64;
file_lock->fl_flags |= FL_OFDLCK;
- file_lock->fl_owner = (fl_owner_t)filp;
+ file_lock->fl_owner = filp;
/* Fallthrough */
case F_SETLKW64:
file_lock->fl_flags |= FL_SLEEP;
@@ -2312,10 +2324,11 @@ void locks_remove_file(struct file *filp)
if (!inode->i_flock)
return;
- locks_remove_posix(filp, (fl_owner_t)filp);
+ locks_remove_posix(filp, filp);
if (filp->f_op->flock) {
struct file_lock fl = {
+ .fl_owner = filp,
.fl_pid = current->tgid,
.fl_file = filp,
.fl_flags = FL_FLOCK,
@@ -2423,31 +2436,31 @@ static void lock_get_status(struct seq_file *f, struct file_lock *fl,
seq_printf(f, "%lld:%s ", id, pfx);
if (IS_POSIX(fl)) {
if (fl->fl_flags & FL_ACCESS)
- seq_printf(f, "ACCESS");
+ seq_puts(f, "ACCESS");
else if (IS_OFDLCK(fl))
- seq_printf(f, "OFDLCK");
+ seq_puts(f, "OFDLCK");
else
- seq_printf(f, "POSIX ");
+ seq_puts(f, "POSIX ");
seq_printf(f, " %s ",
(inode == NULL) ? "*NOINODE*" :
mandatory_lock(inode) ? "MANDATORY" : "ADVISORY ");
} else if (IS_FLOCK(fl)) {
if (fl->fl_type & LOCK_MAND) {
- seq_printf(f, "FLOCK MSNFS ");
+ seq_puts(f, "FLOCK MSNFS ");
} else {
- seq_printf(f, "FLOCK ADVISORY ");
+ seq_puts(f, "FLOCK ADVISORY ");
}
} else if (IS_LEASE(fl)) {
- seq_printf(f, "LEASE ");
+ seq_puts(f, "LEASE ");
if (lease_breaking(fl))
- seq_printf(f, "BREAKING ");
+ seq_puts(f, "BREAKING ");
else if (fl->fl_file)
- seq_printf(f, "ACTIVE ");
+ seq_puts(f, "ACTIVE ");
else
- seq_printf(f, "BREAKER ");
+ seq_puts(f, "BREAKER ");
} else {
- seq_printf(f, "UNKNOWN UNKNOWN ");
+ seq_puts(f, "UNKNOWN UNKNOWN ");
}
if (fl->fl_type & LOCK_MAND) {
seq_printf(f, "%s ",
@@ -2479,7 +2492,7 @@ static void lock_get_status(struct seq_file *f, struct file_lock *fl,
else
seq_printf(f, "%Ld %Ld\n", fl->fl_start, fl->fl_end);
} else {
- seq_printf(f, "0 EOF\n");
+ seq_puts(f, "0 EOF\n");
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-10 05:59:25 +0000