[PATCH 2/3] aio: add support for zone-append
From: Kanchan Joshi <hidden>
Date: 2020-06-17 17:27:15
Also in:
io-uring, linux-fsdevel, lkml
Subsystem:
aio, filesystems (vfs and infrastructure), the rest · Maintainers:
Benjamin LaHaise, Alexander Viro, Christian Brauner, Linus Torvalds
Introduce IOCB_CMD_ZONE_APPEND opcode for zone-append. On append completion zone-relative offset is returned using io_event->res2. Signed-off-by: Kanchan Joshi <redacted> Signed-off-by: Arnav Dawn <redacted> Signed-off-by: SelvaKumar S <redacted> Signed-off-by: Nitesh Shetty <redacted> Signed-off-by: Javier Gonzalez <redacted> --- fs/aio.c | 8 ++++++++ include/uapi/linux/aio_abi.h | 1 + 2 files changed, 9 insertions(+)
diff --git a/fs/aio.c b/fs/aio.c
index 7ecddc2..8b10a55d 100644
--- a/fs/aio.c
+++ b/fs/aio.c@@ -1579,6 +1579,10 @@ static int aio_write(struct kiocb *req, const struct iocb *iocb, __sb_start_write(file_inode(file)->i_sb, SB_FREEZE_WRITE, true); __sb_writers_release(file_inode(file)->i_sb, SB_FREEZE_WRITE); } +#ifdef CONFIG_BLK_DEV_ZONED + if (iocb->aio_lio_opcode == IOCB_CMD_ZONE_APPEND) + req->ki_flags |= IOCB_ZONE_APPEND; +#endif req->ki_flags |= IOCB_WRITE; aio_rw_done(req, call_write_iter(file, req, &iter)); }
@@ -1846,6 +1850,10 @@ static int __io_submit_one(struct kioctx *ctx, const struct iocb *iocb, return aio_fsync(&req->fsync, iocb, true); case IOCB_CMD_POLL: return aio_poll(req, iocb); +#ifdef CONFIG_BLK_DEV_ZONED + case IOCB_CMD_ZONE_APPEND: + return aio_write(&req->rw, iocb, false, compat); +#endif default: pr_debug("invalid aio operation %d\n", iocb->aio_lio_opcode); return -EINVAL;
diff --git a/include/uapi/linux/aio_abi.h b/include/uapi/linux/aio_abi.h
index 8387e0a..541d96a 100644
--- a/include/uapi/linux/aio_abi.h
+++ b/include/uapi/linux/aio_abi.h@@ -43,6 +43,7 @@ enum { IOCB_CMD_NOOP = 6, IOCB_CMD_PREADV = 7, IOCB_CMD_PWRITEV = 8, + IOCB_CMD_ZONE_APPEND = 9, }; /*
--
2.7.4