[SCSI] seperate max_sectors from max_hw_sectors

[mirror_ubuntu-artful-kernel.git] / fs / bio.c

diff --git a/fs/bio.c b/fs/bio.c
index 4d21ee3873ecba17031cf9e4da3cf037165a636b..38d3e8023a0795273595b46ef8647ebaee9952e6 100644 (file)
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -313,7 +313,8 @@ int bio_get_nr_vecs(struct block_device *bdev)
 }
 
 static int __bio_add_page(request_queue_t *q, struct bio *bio, struct page
-                         *page, unsigned int len, unsigned int offset)
+                         *page, unsigned int len, unsigned int offset,
+                         unsigned short max_sectors)
 {
        int retried_segments = 0;
        struct bio_vec *bvec;
@@ -327,7 +328,7 @@ static int __bio_add_page(request_queue_t *q, struct bio *bio, struct page
        if (bio->bi_vcnt >= bio->bi_max_vecs)
                return 0;
 
-       if (((bio->bi_size + len) >> 9) > q->max_sectors)
+       if (((bio->bi_size + len) >> 9) > max_sectors)
                return 0;
 
        /*
@@ -401,7 +402,7 @@ static int __bio_add_page(request_queue_t *q, struct bio *bio, struct page
 int bio_add_pc_page(request_queue_t *q, struct bio *bio, struct page *page,
                    unsigned int len, unsigned int offset)
 {
-       return __bio_add_page(q, bio, page, len, offset);
+       return __bio_add_page(q, bio, page, len, offset, q->max_hw_sectors);
 }
 
 /**
@@ -420,8 +421,8 @@ int bio_add_pc_page(request_queue_t *q, struct bio *bio, struct page *page,
 int bio_add_page(struct bio *bio, struct page *page, unsigned int len,
                 unsigned int offset)
 {
-       return __bio_add_page(bdev_get_queue(bio->bi_bdev), bio, page,
-                             len, offset);
+       struct request_queue *q = bdev_get_queue(bio->bi_bdev);
+       return __bio_add_page(q, bio, page, len, offset, q->max_sectors);
 }
 
 struct bio_map_data {
@@ -533,7 +534,7 @@ struct bio *bio_copy_user(request_queue_t *q, unsigned long uaddr,
                        break;
                }
 
-               if (__bio_add_page(q, bio, page, bytes, 0) < bytes) {
+               if (bio_add_pc_page(q, bio, page, bytes, 0) < bytes) {
                        ret = -EINVAL;
                        break;
                }
@@ -647,7 +648,8 @@ static struct bio *__bio_map_user_iov(request_queue_t *q,
                        /*
                         * sorry...
                         */
-                       if (__bio_add_page(q, bio, pages[j], bytes, offset) < bytes)
+                       if (bio_add_pc_page(q, bio, pages[j], bytes, offset) <
+                                           bytes)
                                break;
 
                        len -= bytes;
@@ -820,8 +822,8 @@ static struct bio *__bio_map_kern(request_queue_t *q, void *data,
                if (bytes > len)
                        bytes = len;
 
-               if (__bio_add_page(q, bio, virt_to_page(data), bytes,
-                                  offset) < bytes)
+               if (bio_add_pc_page(q, bio, virt_to_page(data), bytes,
+                                   offset) < bytes)
                        break;
 
                data += bytes;