Add yet another io_uring cmd implementing async secure erases.
It has same page cache races as async discards and write zeroes and
reuses the common paths in general.
Suggested-by: Conrad Meyer <conradmeyer@xxxxxxxx>
Signed-off-by: Pavel Begunkov <asml.silence@xxxxxxxxx>
---
block/ioctl.c | 15 +++++++++++++++
include/uapi/linux/fs.h | 1 +
2 files changed, 16 insertions(+)
diff --git a/block/ioctl.c b/block/ioctl.c
index 6f0676f21e7b..ab8bab6ee806 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -841,6 +841,18 @@ static int blkdev_cmd_write_zeroes(struct io_uring_cmd *cmd,
bdev_write_zeroes_sectors(bdev), opf);
}
+static int blkdev_cmd_secure_erase(struct io_uring_cmd *cmd,
+ struct block_device *bdev,
+ uint64_t start, uint64_t len, bool nowait)
+{
+ blk_opf_t opf = REQ_OP_SECURE_ERASE;
+
+ if (nowait)
+ opf |= REQ_NOWAIT;
+ return blkdev_queue_cmd(cmd, bdev, start, len,
+ bdev_max_secure_erase_sectors(bdev), opf);
+}
+
static int blkdev_cmd_discard(struct io_uring_cmd *cmd,
struct block_device *bdev,
uint64_t start, uint64_t len, bool nowait)
@@ -911,6 +923,9 @@ int blkdev_uring_cmd(struct io_uring_cmd *cmd, unsigned int issue_flags)
case BLOCK_URING_CMD_WRITE_ZEROES:
return blkdev_cmd_write_zeroes(cmd, bdev, start, len,
bc->nowait);
+ case BLOCK_URING_CMD_SECURE_ERASE:
+ return blkdev_cmd_secure_erase(cmd, bdev, start, len,
+ bc->nowait);
}
return -EINVAL;
}
diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
index b9e20ce57a28..425957589bdf 100644
--- a/include/uapi/linux/fs.h
+++ b/include/uapi/linux/fs.h
@@ -210,6 +210,7 @@ struct fsxattr {
#define BLOCK_URING_CMD_DISCARD 0
#define BLOCK_URING_CMD_WRITE_ZEROES 1
+#define BLOCK_URING_CMD_SECURE_ERASE 2
#define BMAP_IOCTL 1 /* obsolete - kept for compatibility */
#define FIBMAP _IO(0x00,1) /* bmap access */
--
2.45.2
