From: Omar Sandoval <osandov@osandov.com>
To: linux-btrfs@vger.kernel.org
Cc: linux-fsdevel@vger.kernel.org, kernel-team@fb.com
Subject: [PATCH v2 5/5] btrfs: send: enable support for stream v2 and compressed writes
Date: Wed, 18 Nov 2020 11:18:52 -0800 [thread overview]
Message-ID: <836f1fbe6112ab89c6f592faaaea0dddb24fb8fe.1605723600.git.osandov@fb.com> (raw)
In-Reply-To: <cover.1605723600.git.osandov@fb.com>
From: Omar Sandoval <osandov@fb.com>
Now that the new support is implemented, allow the ioctl to accept the
flags and update the version in sysfs.
Signed-off-by: Omar Sandoval <osandov@fb.com>
---
fs/btrfs/send.c | 10 +++++++++-
fs/btrfs/send.h | 2 +-
include/uapi/linux/btrfs.h | 4 +++-
3 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index 4d5cd90f4ef3..4b62bdbfbee0 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -670,7 +670,10 @@ static int send_header(struct send_ctx *sctx)
struct btrfs_stream_header hdr;
strcpy(hdr.magic, BTRFS_SEND_STREAM_MAGIC);
- hdr.version = cpu_to_le32(BTRFS_SEND_STREAM_VERSION);
+ if (sctx->flags & BTRFS_SEND_FLAG_STREAM_V2)
+ hdr.version = cpu_to_le32(2);
+ else
+ hdr.version = cpu_to_le32(1);
return write_buf(sctx->send_filp, &hdr, sizeof(hdr),
&sctx->send_off);
@@ -7434,6 +7437,11 @@ long btrfs_ioctl_send(struct file *mnt_file, struct btrfs_ioctl_send_args *arg)
ret = -EINVAL;
goto out;
}
+ if ((arg->flags & BTRFS_SEND_FLAG_COMPRESSED) &&
+ !(arg->flags & BTRFS_SEND_FLAG_STREAM_V2)) {
+ ret = -EINVAL;
+ goto out;
+ }
sctx = kzalloc(sizeof(struct send_ctx), GFP_KERNEL);
if (!sctx) {
diff --git a/fs/btrfs/send.h b/fs/btrfs/send.h
index 9f4f7b96b1eb..9c83e14a43b2 100644
--- a/fs/btrfs/send.h
+++ b/fs/btrfs/send.h
@@ -10,7 +10,7 @@
#include "ctree.h"
#define BTRFS_SEND_STREAM_MAGIC "btrfs-stream"
-#define BTRFS_SEND_STREAM_VERSION 1
+#define BTRFS_SEND_STREAM_VERSION 2
/*
* In send stream v1, no command is larger than 64k. In send stream v2, no limit
diff --git a/include/uapi/linux/btrfs.h b/include/uapi/linux/btrfs.h
index 51e69f28d22d..6f29c456e4d7 100644
--- a/include/uapi/linux/btrfs.h
+++ b/include/uapi/linux/btrfs.h
@@ -785,7 +785,9 @@ struct btrfs_ioctl_received_subvol_args {
#define BTRFS_SEND_FLAG_MASK \
(BTRFS_SEND_FLAG_NO_FILE_DATA | \
BTRFS_SEND_FLAG_OMIT_STREAM_HEADER | \
- BTRFS_SEND_FLAG_OMIT_END_CMD)
+ BTRFS_SEND_FLAG_OMIT_END_CMD | \
+ BTRFS_SEND_FLAG_STREAM_V2 | \
+ BTRFS_SEND_FLAG_COMPRESSED)
struct btrfs_ioctl_send_args {
__s64 send_fd; /* in */
--
2.29.2
next prev parent reply other threads:[~2020-11-18 19:19 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-18 19:18 [PATCH v2 0/5] btrfs: implement send/receive of compressed extents without decompressing Omar Sandoval
2020-11-18 19:18 ` [PATCH v2 1/5] btrfs: add send stream v2 definitions Omar Sandoval
2020-11-18 19:18 ` [PATCH v2 01/13] btrfs-progs: send: fix crash on unknown option Omar Sandoval
2020-12-16 16:20 ` David Sterba
2020-11-18 19:18 ` [PATCH v2 02/13] btrfs-progs: receive: support v2 send stream larger tlv_len Omar Sandoval
2020-11-18 19:18 ` [PATCH v2 2/5] btrfs: send: write larger chunks when using stream v2 Omar Sandoval
2020-11-18 19:18 ` [PATCH v2 03/13] btrfs-progs: receive: dynamically allocate sctx->read_buf Omar Sandoval
2020-11-18 19:18 ` [PATCH v2 3/5] btrfs: send: allocate send buffer with alloc_page() and vmap() for v2 Omar Sandoval
2020-11-18 19:18 ` [PATCH v2 04/13] btrfs-progs: receive: support v2 send stream DATA tlv format Omar Sandoval
2020-11-18 19:18 ` [PATCH v2 4/5] btrfs: send: send compressed extents with encoded writes Omar Sandoval
2020-11-18 19:18 ` [PATCH v2 05/13] btrfs-progs: receive: add send stream v2 cmds and attrs to send.h Omar Sandoval
2020-11-18 19:18 ` Omar Sandoval [this message]
2020-11-18 19:18 ` [PATCH v2 06/13] btrfs-progs: receive: add stub implementation for pwritev2 Omar Sandoval
2020-11-18 19:18 ` [PATCH v2 07/13] btrfs-progs: receive: open files with O_CLOEXEC Omar Sandoval
2020-11-18 19:18 ` [PATCH v2 08/13] btrfs-progs: receive: process encoded_write commands Omar Sandoval
2020-11-18 19:18 ` [PATCH v2 09/13] btrfs-progs: receive: encoded_write fallback to explicit decode and write Omar Sandoval
2020-11-18 19:18 ` [PATCH v2 10/13] btrfs-progs: receive: process fallocate commands Omar Sandoval
2020-11-18 19:18 ` [PATCH v2 11/13] btrfs-progs: receive: process setflags ioctl commands Omar Sandoval
2020-11-18 19:18 ` [PATCH v2 12/13] btrfs-progs: send: stream v2 ioctl flags Omar Sandoval
2020-11-18 19:19 ` [PATCH v2 13/13] btrfs-progs: receive: add tests for basic encoded_write send/receive Omar Sandoval
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