diff options
| author | Vishal Verma <vishal.l.verma@intel.com> | 2015-05-12 19:48:53 +0200 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2015-06-26 17:23:38 +0200 |
| commit | f68eb1e71a92765ffd8eb68466a41b48f2fbba04 (patch) | |
| tree | 536fa54745479c3a4b3987b3180b60c9bbc50521 /fs/block_dev.c | |
| parent | libnvdimm: Non-Volatile Devices (diff) | |
| download | linux-f68eb1e71a92765ffd8eb68466a41b48f2fbba04.tar.xz linux-f68eb1e71a92765ffd8eb68466a41b48f2fbba04.zip | |
fs/block_dev.c: skip rw_page if bdev has integrity
If a block device has bio integrity enabled, rw_page will bypass the
integrity payload, which is undesirable. Skip rw_page if this is the
case.
Currently brd and zram provide rw_page, and the proposed 'nd' drivers
will too.
Cc: Jens Axboe <axboe@fb.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Suggested-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'fs/block_dev.c')
| -rw-r--r-- | fs/block_dev.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index c7e4163ede87..054ef1bbb821 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -376,7 +376,7 @@ int bdev_read_page(struct block_device *bdev, sector_t sector, struct page *page) { const struct block_device_operations *ops = bdev->bd_disk->fops; - if (!ops->rw_page) + if (!ops->rw_page || bdev_get_integrity(bdev)) return -EOPNOTSUPP; return ops->rw_page(bdev, sector + get_start_sect(bdev), page, READ); } @@ -407,7 +407,7 @@ int bdev_write_page(struct block_device *bdev, sector_t sector, int result; int rw = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : WRITE; const struct block_device_operations *ops = bdev->bd_disk->fops; - if (!ops->rw_page) + if (!ops->rw_page || bdev_get_integrity(bdev)) return -EOPNOTSUPP; set_page_writeback(page); result = ops->rw_page(bdev, sector + get_start_sect(bdev), page, rw); |