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FS-Cache: Bit waiting helpers

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Add helpers for use with wait_on_bit().

Signed-off-by: David Howells <[email protected]>
Acked-by: Steve Dickson <[email protected]>
Acked-by: Trond Myklebust <[email protected]>
Acked-by: Al Viro <[email protected]>
Tested-by: Daire Byrne <[email protected]>
This commit is contained in:
David Howells 2009-04-03 16:42:38 +01:00
commit 2868cbea72
2 changed files with 23 additions and 0 deletions
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3
fs/fscache/internal.h
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@ -82,6 +82,9 @@ extern unsigned fscache_defer_create;
extern unsigned fscache_debug;
extern struct kobject *fscache_root;
extern int fscache_wait_bit(void *);
extern int fscache_wait_bit_interruptible(void *);
/*
* fsc-proc.c
*/

20
fs/fscache/main.c
View file

@ -102,3 +102,23 @@ static void __exit fscache_exit(void)
}
module_exit(fscache_exit);
/*
* wait_on_bit() sleep function for uninterruptible waiting
*/
int fscache_wait_bit(void *flags)
{
schedule();
return 0;
}
EXPORT_SYMBOL(fscache_wait_bit);
/*
* wait_on_bit() sleep function for interruptible waiting
*/
int fscache_wait_bit_interruptible(void *flags)
{
schedule();
return signal_pending(current);
}
EXPORT_SYMBOL(fscache_wait_bit_interruptible);