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[PATCH] swsusp: kill unneeded/unbalanced bio_get 

- Remove unneeded bio_get() which would cause a bio leak

- Writing doesn't dirty pages.  Reading dirties pages.

- We should dirty the pages after the IO completion, not before

(Busy-waiting for disk I/O completion isn't very polite.)

Signed-off-by: Pavel Machek <pavel@suse.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Pavel Machek 2006-02-07 12:58:22 -08:00 committed by Linus Torvalds
parent 2139bdd5b1
commit 7714d5985b
1 changed files with 2 additions and 4 deletions
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6
kernel/power/swsusp.c
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@ -743,7 +743,6 @@ static int submit(int rw, pgoff_t page_off, void *page)
if (!bio)
return -ENOMEM;
bio->bi_sector = page_off * (PAGE_SIZE >> 9);
bio_get(bio);
bio->bi_bdev = resume_bdev;
bio->bi_end_io = end_io;
@ -753,14 +752,13 @@ static int submit(int rw, pgoff_t page_off, void *page)
goto Done;
}
if (rw == WRITE)
bio_set_pages_dirty(bio);
atomic_set(&io_done, 1);
submit_bio(rw | (1 << BIO_RW_SYNC), bio);
while (atomic_read(&io_done))
yield();
if (rw == READ)
bio_set_pages_dirty(bio);
Done:
bio_put(bio);
return error;