Subject: + brd-add-support-for-rw_page.patch added to -mm tree
To: matthew.r.wilcox@xxxxxxxxx,david@xxxxxxxxxxxxx,dheeraj.reddy@xxxxxxxxx,hughd@xxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Thu, 24 Apr 2014 11:18:02 -0700
The patch titled
Subject: brd: add support for rw_page()
has been added to the -mm tree. Its filename is
brd-add-support-for-rw_page.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/brd-add-support-for-rw_page.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/brd-add-support-for-rw_page.patch
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------------------------------------------------------
From: Matthew Wilcox <matthew.r.wilcox@xxxxxxxxx>
Subject: brd: add support for rw_page()
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@xxxxxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Cc: Dheeraj Reddy <dheeraj.reddy@xxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/block/brd.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff -puN drivers/block/brd.c~brd-add-support-for-rw_page drivers/block/brd.c
--- a/drivers/block/brd.c~brd-add-support-for-rw_page
+++ a/drivers/block/brd.c
@@ -360,6 +360,15 @@ out:
bio_endio(bio, err);
}
+static int brd_rw_page(struct block_device *bdev, sector_t sector,
+ struct page *page, int rw)
+{
+ struct brd_device *brd = bdev->bd_disk->private_data;
+ int err = brd_do_bvec(brd, page, PAGE_CACHE_SIZE, 0, rw, sector);
+ page_endio(page, rw & WRITE, err);
+ return err;
+}
+
#ifdef CONFIG_BLK_DEV_XIP
static int brd_direct_access(struct block_device *bdev, sector_t sector,
void **kaddr, unsigned long *pfn)
@@ -419,6 +428,7 @@ static int brd_ioctl(struct block_device
static const struct block_device_operations brd_fops = {
.owner = THIS_MODULE,
+ .rw_page = brd_rw_page,
.ioctl = brd_ioctl,
#ifdef CONFIG_BLK_DEV_XIP
.direct_access = brd_direct_access,
_
Patches currently in -mm which might be from matthew.r.wilcox@xxxxxxxxx are
origin.patch
mm-introduce-do_shared_fault-and-drop-do_fault-fix-fix.patch
fs-bufferc-remove-block_write_full_page_endio.patch
fs-mpagec-factor-clean_buffers-out-of-__mpage_writepage.patch
fs-mpagec-factor-page_endio-out-of-mpage_end_io.patch
fs-block_devc-add-bdev_read_page-and-bdev_write_page.patch
swap-use-bdev_read_page-bdev_write_page.patch
brd-add-support-for-rw_page.patch
brd-return-enospc-rather-than-enomem-on-page-allocation-failure.patch
do_shared_fault-check-that-mmap_sem-is-held.patch
linux-next.patch
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