diff options
| -rw-r--r-- | drivers/block/rd.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/block/rd.c b/drivers/block/rd.c index 47f8ac6cce5..82f4eecc869 100644 --- a/drivers/block/rd.c +++ b/drivers/block/rd.c @@ -189,6 +189,18 @@ static int ramdisk_set_page_dirty(struct page *page) return 0; } +/* + * releasepage is called by pagevec_strip/try_to_release_page if + * buffers_heads_over_limit is true. Without a releasepage function + * try_to_free_buffers is called instead. That can unset the dirty + * bit of our ram disk pages, which will be eventually freed, even + * if the page is still in use. + */ +static int ramdisk_releasepage(struct page *page, gfp_t dummy) +{ + return 0; +} + static const struct address_space_operations ramdisk_aops = { .readpage = ramdisk_readpage, .prepare_write = ramdisk_prepare_write, @@ -196,6 +208,7 @@ static const struct address_space_operations ramdisk_aops = { .writepage = ramdisk_writepage, .set_page_dirty = ramdisk_set_page_dirty, .writepages = ramdisk_writepages, + .releasepage = ramdisk_releasepage, }; static int rd_blkdev_pagecache_IO(int rw, struct bio_vec *vec, sector_t sector, |