logfs: commit reservations under space pressure

[safe/jmp/linux-2.6] / fs / logfs / dev_bdev.c

diff --git a/fs/logfs/dev_bdev.c b/fs/logfs/dev_bdev.c
index 18e8c14..243c000 100644 (file)
--- a/fs/logfs/dev_bdev.c
+++ b/fs/logfs/dev_bdev.c
@@ -81,6 +81,7 @@ static void writeseg_end_io(struct bio *bio, int err)
                        prefetchw(&bvec->bv_page->flags);
 
                end_page_writeback(page);
+               page_cache_release(page);
        } while (bvec >= bio->bi_io_vec);
        bio_put(bio);
        if (atomic_dec_and_test(&super->s_pending_writes))
@@ -98,8 +99,10 @@ static int __bdev_writeseg(struct super_block *sb, u64 ofs, pgoff_t index,
        unsigned int max_pages = queue_max_hw_sectors(q) >> (PAGE_SHIFT - 9);
        int i;
 
+       if (max_pages > BIO_MAX_PAGES)
+               max_pages = BIO_MAX_PAGES;
        bio = bio_alloc(GFP_NOFS, max_pages);
-       BUG_ON(!bio); /* FIXME: handle this */
+       BUG_ON(!bio);
 
        for (i = 0; i < nr_pages; i++) {
                if (i >= max_pages) {
@@ -192,8 +195,10 @@ static int do_erase(struct super_block *sb, u64 ofs, pgoff_t index,
        unsigned int max_pages = queue_max_hw_sectors(q) >> (PAGE_SHIFT - 9);
        int i;
 
+       if (max_pages > BIO_MAX_PAGES)
+               max_pages = BIO_MAX_PAGES;
        bio = bio_alloc(GFP_NOFS, max_pages);
-       BUG_ON(!bio); /* FIXME: handle this */
+       BUG_ON(!bio);
 
        for (i = 0; i < nr_pages; i++) {
                if (i >= max_pages) {