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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 <dhowells@redhat.com>
Acked-by: Steve Dickson <steved@redhat.com>
Acked-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Tested-by: Daire Byrne <Daire.Byrne@framestore.com>
This commit is contained in:
David Howells
2009-04-03 16:42:38 +01:00
parent 726dd7ff10
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 unsigned fscache_debug;
extern struct kobject *fscache_root; extern struct kobject *fscache_root;
extern int fscache_wait_bit(void *);
extern int fscache_wait_bit_interruptible(void *);
/* /*
* fsc-proc.c * fsc-proc.c
*/ */

20
fs/fscache/main.c
View File

@@ -102,3 +102,23 @@ static void __exit fscache_exit(void)
} }
module_exit(fscache_exit); 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);