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locks: turn lock_flocks into a spinlock 

Nothing depends on lock_flocks using the BKL
any more, so we can do the switch over to
a private spinlock.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2010-10-27 21:39:58 +02:00
parent f7347ce4ee
commit 72f98e7255
2 changed files with 3 additions and 3 deletions
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1
fs/Kconfig
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@ -50,7 +50,6 @@ endif # BLOCK
config FILE_LOCKING
bool "Enable POSIX file locking API" if EMBEDDED
default y
select BKL # while lockd still uses it.
help
This option enables standard file locking support, required
for filesystems like NFS and for the flock() system

5
fs/locks.c
View File

@ -142,6 +142,7 @@ int lease_break_time = 45;
static LIST_HEAD(file_lock_list);
static LIST_HEAD(blocked_list);
static DEFINE_SPINLOCK(file_lock_lock);
/*
* Protects the two list heads above, plus the inode->i_flock list
@ -149,13 +150,13 @@ static LIST_HEAD(blocked_list);
*/
void lock_flocks(void)
{
lock_kernel();
spin_lock(&file_lock_lock);
}
EXPORT_SYMBOL_GPL(lock_flocks);
void unlock_flocks(void)
{
unlock_kernel();
spin_unlock(&file_lock_lock);
}
EXPORT_SYMBOL_GPL(unlock_flocks);