diff options
| -rw-r--r-- | fs/block_dev.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index da020be..d9bdf2b 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -190,6 +190,12 @@ static struct page *blk_get_page(unsigned long addr, size_t count, int rw, return pvec->page[pvec->idx++]; } +/* return a page back to pvec array */ +static void blk_unget_page(struct page *page, struct pvec *pvec) +{ + pvec->page[--pvec->idx] = page; +} + static ssize_t blkdev_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov, loff_t pos, unsigned long nr_segs) @@ -278,6 +284,8 @@ same_bio: count = min(count, nbytes); goto same_bio; } + } else { + blk_unget_page(page, &pvec); } /* bio is ready, submit it */ |
