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locks: rename FL_FILE_PVT and IS_FILE_PVT to use "*_OFDLCK" instead 

File-private locks have been re-christened as "open file description"
locks.  Finish the symbol name cleanup in the internal implementation.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
This commit is contained in:
Jeff Layton 2014-04-22 08:24:32 -04:00
Родитель 0d3f7a2dd2
Коммит cff2fce58b
2 изменённых файлов: 18 добавлений и 18 удалений
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34
fs/locks.c
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@ -135,7 +135,7 @@
#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))
#define IS_FILE_PVT(fl) (fl->fl_flags & FL_FILE_PVT)
#define IS_OFDLCK(fl) (fl->fl_flags & FL_OFDLCK)
static bool lease_breaking(struct file_lock *fl)
{
@ -564,7 +564,7 @@ static void __locks_insert_block(struct file_lock *blocker,
BUG_ON(!list_empty(&waiter->fl_block));
waiter->fl_next = blocker;
list_add_tail(&waiter->fl_block, &blocker->fl_block);
if (IS_POSIX(blocker) && !IS_FILE_PVT(blocker))
if (IS_POSIX(blocker) && !IS_OFDLCK(blocker))
locks_insert_global_blocked(waiter);
}
@ -759,12 +759,12 @@ EXPORT_SYMBOL(posix_test_lock);
* of tasks (such as posix threads) sharing the same open file table.
* To handle those cases, we just bail out after a few iterations.
*
* For FL_FILE_PVT locks, the owner is the filp, not the files_struct.
* For FL_OFDLCK locks, the owner is the filp, not the files_struct.
* Because the owner is not even nominally tied to a thread of
* execution, the deadlock detection below can't reasonably work well. Just
* skip it for those.
*
* In principle, we could do a more limited deadlock detection on FL_FILE_PVT
* In principle, we could do a more limited deadlock detection on FL_OFDLCK
* locks that just checks for the case where two tasks are attempting to
* upgrade from read to write locks on the same inode.
*/
@ -791,9 +791,9 @@ static int posix_locks_deadlock(struct file_lock *caller_fl,
/*
* This deadlock detector can't reasonably detect deadlocks with
* FL_FILE_PVT locks, since they aren't owned by a process, per-se.
* FL_OFDLCK locks, since they aren't owned by a process, per-se.
*/
if (IS_FILE_PVT(caller_fl))
if (IS_OFDLCK(caller_fl))
return 0;
while ((block_fl = what_owner_is_waiting_for(block_fl))) {
@ -1890,7 +1890,7 @@ EXPORT_SYMBOL_GPL(vfs_test_lock);
static int posix_lock_to_flock(struct flock *flock, struct file_lock *fl)
{
flock->l_pid = IS_FILE_PVT(fl) ? -1 : fl->fl_pid;
flock->l_pid = IS_OFDLCK(fl) ? -1 : fl->fl_pid;
#if BITS_PER_LONG == 32
/*
* Make sure we can represent the posix lock via
@ -1912,7 +1912,7 @@ static int posix_lock_to_flock(struct flock *flock, struct file_lock *fl)
#if BITS_PER_LONG == 32
static void posix_lock_to_flock64(struct flock64 *flock, struct file_lock *fl)
{
flock->l_pid = IS_FILE_PVT(fl) ? -1 : fl->fl_pid;
flock->l_pid = IS_OFDLCK(fl) ? -1 : fl->fl_pid;
flock->l_start = fl->fl_start;
flock->l_len = fl->fl_end == OFFSET_MAX ? 0 :
fl->fl_end - fl->fl_start + 1;
@ -1947,7 +1947,7 @@ int fcntl_getlk(struct file *filp, unsigned int cmd, struct flock __user *l)
goto out;
cmd = F_GETLK;
file_lock.fl_flags |= FL_FILE_PVT;
file_lock.fl_flags |= FL_OFDLCK;
file_lock.fl_owner = (fl_owner_t)filp;
}
@ -2073,7 +2073,7 @@ again:
/*
* If the cmd is requesting file-private locks, then set the
* FL_FILE_PVT flag and override the owner.
* FL_OFDLCK flag and override the owner.
*/
switch (cmd) {
case F_OFD_SETLK:
@ -2082,7 +2082,7 @@ again:
goto out;
cmd = F_SETLK;
file_lock->fl_flags |= FL_FILE_PVT;
file_lock->fl_flags |= FL_OFDLCK;
file_lock->fl_owner = (fl_owner_t)filp;
break;
case F_OFD_SETLKW:
@ -2091,7 +2091,7 @@ again:
goto out;
cmd = F_SETLKW;
file_lock->fl_flags |= FL_FILE_PVT;
file_lock->fl_flags |= FL_OFDLCK;
file_lock->fl_owner = (fl_owner_t)filp;
/* Fallthrough */
case F_SETLKW:
@ -2149,7 +2149,7 @@ int fcntl_getlk64(struct file *filp, unsigned int cmd, struct flock64 __user *l)
goto out;
cmd = F_GETLK64;
file_lock.fl_flags |= FL_FILE_PVT;
file_lock.fl_flags |= FL_OFDLCK;
file_lock.fl_owner = (fl_owner_t)filp;
}
@ -2208,7 +2208,7 @@ again:
/*
* If the cmd is requesting file-private locks, then set the
* FL_FILE_PVT flag and override the owner.
* FL_OFDLCK flag and override the owner.
*/
switch (cmd) {
case F_OFD_SETLK:
@ -2217,7 +2217,7 @@ again:
goto out;
cmd = F_SETLK64;
file_lock->fl_flags |= FL_FILE_PVT;
file_lock->fl_flags |= FL_OFDLCK;
file_lock->fl_owner = (fl_owner_t)filp;
break;
case F_OFD_SETLKW:
@ -2226,7 +2226,7 @@ again:
goto out;
cmd = F_SETLKW64;
file_lock->fl_flags |= FL_FILE_PVT;
file_lock->fl_flags |= FL_OFDLCK;
file_lock->fl_owner = (fl_owner_t)filp;
/* Fallthrough */
case F_SETLKW64:
@ -2412,7 +2412,7 @@ static void lock_get_status(struct seq_file *f, struct file_lock *fl,
if (IS_POSIX(fl)) {
if (fl->fl_flags & FL_ACCESS)
seq_printf(f, "ACCESS");
else if (IS_FILE_PVT(fl))
else if (IS_OFDLCK(fl))
seq_printf(f, "OFDLCK");
else
seq_printf(f, "POSIX ");

2
include/linux/fs.h
Просмотреть файл

@ -815,7 +815,7 @@ static inline struct file *get_file(struct file *f)
#define FL_SLEEP 128 /* A blocking lock */
#define FL_DOWNGRADE_PENDING 256 /* Lease is being downgraded */
#define FL_UNLOCK_PENDING 512 /* Lease is being broken */
#define FL_FILE_PVT 1024 /* lock is private to the file */
#define FL_OFDLCK 1024 /* lock is "owned" by struct file */
/*
* Special return value from posix_lock_file() and vfs_lock_file() for