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authorLinus Torvalds <torvalds@linux-foundation.org>2014-06-04 17:12:50 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-04 17:12:50 +0200
commit74efa045f4e2fdcc9d6384004c5b1bba0cc1fd3c (patch)
treedd49456483356bb18200968bcefddc9ce78cae44 /fs
parentMerge tag 'firewire-updates' of git://git.kernel.org/pub/scm/linux/kernel/git... (diff)
parentlocks: add some tracepoints in the lease handling code (diff)
downloadlinux-74efa045f4e2fdcc9d6384004c5b1bba0cc1fd3c.tar.xz
linux-74efa045f4e2fdcc9d6384004c5b1bba0cc1fd3c.zip
Merge tag 'locks-v3.16' of git://git.samba.org/jlayton/linux into next
Pull file locking changes from Jeff Layton: "Pretty quiet on the file-locking related front this cycle. Just some small cleanups and the addition of some tracepoints in the lease handling code" * tag 'locks-v3.16' of git://git.samba.org/jlayton/linux: locks: add some tracepoints in the lease handling code fs/locks.c: replace seq_printf by seq_puts locks: ensure that fl_owner is always initialized properly in flock and lease codepaths
Diffstat (limited to 'fs')
-rw-r--r--fs/9p/vfs_file.c3
-rw-r--r--fs/afs/flock.c4
-rw-r--r--fs/ceph/locks.c10
-rw-r--r--fs/fuse/file.c1
-rw-r--r--fs/locks.c37
-rw-r--r--fs/nfs/file.c4
6 files changed, 27 insertions, 32 deletions
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index d8223209d4b1..59e3fe3d56c0 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -352,9 +352,6 @@ static int v9fs_file_flock_dotl(struct file *filp, int cmd,
invalidate_mapping_pages(&inode->i_data, 0, -1);
}
/* Convert flock to posix lock */
- fl->fl_owner = (fl_owner_t)filp;
- fl->fl_start = 0;
- fl->fl_end = OFFSET_MAX;
fl->fl_flags |= FL_POSIX;
fl->fl_flags ^= FL_FLOCK;
diff --git a/fs/afs/flock.c b/fs/afs/flock.c
index a8cf2cff836c..4baf1d2b39e4 100644
--- a/fs/afs/flock.c
+++ b/fs/afs/flock.c
@@ -555,10 +555,6 @@ int afs_flock(struct file *file, int cmd, struct file_lock *fl)
return -ENOLCK;
/* we're simulating flock() locks using posix locks on the server */
- fl->fl_owner = (fl_owner_t) file;
- fl->fl_start = 0;
- fl->fl_end = OFFSET_MAX;
-
if (fl->fl_type == F_UNLCK)
return afs_do_unlk(file, fl);
return afs_do_setlk(file, fl);
diff --git a/fs/ceph/locks.c b/fs/ceph/locks.c
index 191398852a2e..fbc39c47bacd 100644
--- a/fs/ceph/locks.c
+++ b/fs/ceph/locks.c
@@ -53,10 +53,7 @@ static int ceph_lock_message(u8 lock_type, u16 operation, struct file *file,
else
length = fl->fl_end - fl->fl_start + 1;
- if (lock_type == CEPH_LOCK_FCNTL)
- owner = secure_addr(fl->fl_owner);
- else
- owner = secure_addr(fl->fl_file);
+ owner = secure_addr(fl->fl_owner);
dout("ceph_lock_message: rule: %d, op: %d, owner: %llx, pid: %llu, "
"start: %llu, length: %llu, wait: %d, type: %d", (int)lock_type,
@@ -314,10 +311,7 @@ int lock_to_ceph_filelock(struct file_lock *lock,
cephlock->length = cpu_to_le64(lock->fl_end - lock->fl_start + 1);
cephlock->client = cpu_to_le64(0);
cephlock->pid = cpu_to_le64((u64)lock->fl_pid);
- if (lock->fl_flags & FL_POSIX)
- cephlock->owner = cpu_to_le64(secure_addr(lock->fl_owner));
- else
- cephlock->owner = cpu_to_le64(secure_addr(lock->fl_file));
+ cephlock->owner = cpu_to_le64(secure_addr(lock->fl_owner));
switch (lock->fl_type) {
case F_RDLCK:
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 96d513e01a5d..f680d2c44e97 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -2304,7 +2304,6 @@ static int fuse_file_flock(struct file *file, int cmd, struct file_lock *fl)
struct fuse_file *ff = file->private_data;
/* emulate flock with POSIX locks */
- fl->fl_owner = (fl_owner_t) file;
ff->flock = true;
err = fuse_setlk(file, fl, 1);
}
diff --git a/fs/locks.c b/fs/locks.c
index e390bd9ae068..da57c9b7e844 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 = (fl_owner_t)filp;
fl->fl_pid = current->tgid;
fl->fl_flags = FL_FLOCK;
fl->fl_type = type;
@@ -427,7 +431,7 @@ static int lease_init(struct file *filp, long type, struct file_lock *fl)
if (assign_type(fl, type) != 0)
return -EINVAL;
- fl->fl_owner = current->files;
+ fl->fl_owner = (fl_owner_t)filp;
fl->fl_pid = current->tgid;
fl->fl_file = filp;
@@ -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) {
@@ -2316,6 +2328,7 @@ void locks_remove_file(struct file *filp)
if (filp->f_op->flock) {
struct file_lock fl = {
+ .fl_owner = (fl_owner_t)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");
}
}
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 284ca901fe16..c1edf7336315 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -916,10 +916,6 @@ int nfs_flock(struct file *filp, int cmd, struct file_lock *fl)
is_local = 1;
/* We're simulating flock() locks using posix locks on the server */
- fl->fl_owner = (fl_owner_t)filp;
- fl->fl_start = 0;
- fl->fl_end = OFFSET_MAX;
-
if (fl->fl_type == F_UNLCK)
return do_unlk(filp, cmd, fl, is_local);
return do_setlk(filp, cmd, fl, is_local);