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Merge branch 'bkl-removal' of git://git.lwn.net/linux-2.6

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* 'bkl-removal' of git://git.lwn.net/linux-2.6: (146 commits)
  IB/umad: BKL is not needed for ib_umad_open()
  IB/uverbs: BKL is not needed for ib_uverbs_open()
  bf561-coreb: BKL unneeded for open()
  Call fasync() functions without the BKL
  snd/PCM: fasync BKL pushdown
  ipmi: fasync BKL pushdown
  ecryptfs: fasync BKL pushdown
  Bluetooth VHCI: fasync BKL pushdown
  tty_io: fasync BKL pushdown
  tun: fasync BKL pushdown
  i2o: fasync BKL pushdown
  mpt: fasync BKL pushdown
  Remove BKL from remote_llseek v2
  Make FAT users happier by not deadlocking
  x86-mce: BKL pushdown
  vmwatchdog: BKL pushdown
  vmcp: BKL pushdown
  via-pmu: BKL pushdown
  uml-random: BKL pushdown
  uml-mmapper: BKL pushdown
  ...
This commit is contained in:
Linus Torvalds 2008-07-14 14:48:31 -07:00
commit d1794f2c5b
179 changed files with 1092 additions and 350 deletions
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3
include/linux/fs.h
View file

@ -1870,7 +1870,8 @@ extern void
file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping);
extern loff_t no_llseek(struct file *file, loff_t offset, int origin);
extern loff_t generic_file_llseek(struct file *file, loff_t offset, int origin);
extern loff_t remote_llseek(struct file *file, loff_t offset, int origin);
extern loff_t generic_file_llseek_unlocked(struct file *file, loff_t offset,
int origin);
extern int generic_file_open(struct inode * inode, struct file * filp);
extern int nonseekable_open(struct inode * inode, struct file * filp);

13
include/linux/smp_lock.h
View file

@ -27,11 +27,24 @@ static inline int reacquire_kernel_lock(struct task_struct *task)
extern void __lockfunc lock_kernel(void) __acquires(kernel_lock);
extern void __lockfunc unlock_kernel(void) __releases(kernel_lock);
/*
* Various legacy drivers don't really need the BKL in a specific
* function, but they *do* need to know that the BKL became available.
* This function just avoids wrapping a bunch of lock/unlock pairs
* around code which doesn't really need it.
*/
static inline void cycle_kernel_lock(void)
{
lock_kernel();
unlock_kernel();
}
#else
#define lock_kernel() do { } while(0)
#define unlock_kernel() do { } while(0)
#define release_kernel_lock(task) do { } while(0)
#define cycle_kernel_lock() do { } while(0)
#define reacquire_kernel_lock(task) 0
#define kernel_locked() 1