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raid5-cache: factor out a helper to run all stripes for an I/O unit 

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Shaohua Li <shli@fb.com>
Signed-off-by: NeilBrown <neilb@suse.com>
This commit is contained in:
Christoph Hellwig 2015-10-05 09:31:08 +02:00 committed by NeilBrown
parent 04732f741d
commit d8858f4321
1 changed files with 13 additions and 10 deletions
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23
drivers/md/raid5-cache.c
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@ -194,6 +194,17 @@ static void __r5l_set_io_unit_state(struct r5l_io_unit *io,
io->state = state; io->state = state;
} }
static void r5l_io_run_stripes(struct r5l_io_unit *io)
{
struct stripe_head *sh, *next;
list_for_each_entry_safe(sh, next, &io->stripe_list, log_list) {
list_del_init(&sh->log_list);
set_bit(STRIPE_HANDLE, &sh->state);
raid5_release_stripe(sh);
}
}
/* XXX: totally ignores I/O errors */ /* XXX: totally ignores I/O errors */
static void r5l_log_endio(struct bio *bio) static void r5l_log_endio(struct bio *bio)
{ {
@ -584,18 +595,10 @@ static void r5l_log_flush_endio(struct bio *bio)
flush_bio); flush_bio);
unsigned long flags; unsigned long flags;
struct r5l_io_unit *io; struct r5l_io_unit *io;
struct stripe_head *sh;
spin_lock_irqsave(&log->io_list_lock, flags); spin_lock_irqsave(&log->io_list_lock, flags);
list_for_each_entry(io, &log->flushing_ios, log_sibling) { list_for_each_entry(io, &log->flushing_ios, log_sibling)
while (!list_empty(&io->stripe_list)) { r5l_io_run_stripes(io);
sh = list_first_entry(&io->stripe_list,
struct stripe_head, log_list);
list_del_init(&sh->log_list);
set_bit(STRIPE_HANDLE, &sh->state);
raid5_release_stripe(sh);
}
}
list_splice_tail_init(&log->flushing_ios, &log->finished_ios); list_splice_tail_init(&log->flushing_ios, &log->finished_ios);
spin_unlock_irqrestore(&log->io_list_lock, flags); spin_unlock_irqrestore(&log->io_list_lock, flags);
} }