fs: seq_file - add event counter to simplify poll() support

Moving the event counter into the dynamically allocated 'struc seq_file'
allows poll() support without the need to allocate its own tracking
structure.

All current users are switched over to use the new counter.

Requested-by: Andrew Morton akpm@linux-foundation.org
Acked-by: NeilBrown <neilb@suse.de>
Tested-by: Lucas De Marchi lucas.demarchi@profusion.mobi
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Kay Sievers 2011-07-12 20:48:39 +02:00 committed by Al Viro
parent 72c5052ddc
commit f15146380d
6 changed files with 20 additions and 43 deletions

View file

@ -23,6 +23,7 @@ struct seq_file {
u64 version;
struct mutex lock;
const struct seq_operations *op;
int poll_event;
void *private;
};