Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[~andy/linux] / drivers / target / target_core_iblock.c

diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
index 628e877381d8e606d9505a8b5df0c0573dc6f807..8572eae62da7a20399216db03ea04fe9fa1dde3e 100644 (file)
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -181,7 +181,7 @@ static struct se_device *iblock_create_virtdevice(
                 */
                dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count = 1;
                dev->se_sub_dev->se_dev_attrib.unmap_granularity =
-                               q->limits.discard_granularity;
+                               q->limits.discard_granularity >> 9;
                dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment =
                                q->limits.discard_alignment;
 
@@ -488,6 +488,13 @@ iblock_get_bio(struct se_task *task, sector_t lba, u32 sg_num)
        struct iblock_req *ib_req = IBLOCK_REQ(task);
        struct bio *bio;
 
+       /*
+        * Only allocate as many vector entries as the bio code allows us to,
+        * we'll loop later on until we have handled the whole request.
+        */
+       if (sg_num > BIO_MAX_PAGES)
+               sg_num = BIO_MAX_PAGES;
+
        bio = bio_alloc_bioset(GFP_NOIO, sg_num, ib_dev->ibd_bio_set);
        if (!bio) {
                pr_err("Unable to allocate memory for bio\n");