diff options
| author | Wang Yugui <wangyugui@e16-tech.com> | 2022-10-19 11:10:01 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2022-12-05 20:00:41 +0300 |
| commit | 875c627c5f2045e2b5f0ad6692799e8fb931f3cb (patch) | |
| tree | a338c51d97f07d4459feb7cdcb9ca6d081b372d8 | |
| parent | b307f06d37ca12495e4cfff8d456cd92f045f947 (diff) | |
| download | linux-875c627c5f2045e2b5f0ad6692799e8fb931f3cb.tar.xz | |
btrfs: send add define for v2 buffer size
Add a define for the data buffer size (though the maximum size is not
limited by it) BTRFS_SEND_BUF_SIZE_V2 so it's more visible.
Signed-off-by: Wang Yugui <wangyugui@e16-tech.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
| -rw-r--r-- | fs/btrfs/send.c | 2 | ||||
| -rw-r--r-- | fs/btrfs/send.h | 6 |
2 files changed, 5 insertions, 3 deletions
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index 1c4b693ee4a3..80104b5af32f 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -7901,7 +7901,7 @@ long btrfs_ioctl_send(struct inode *inode, struct btrfs_ioctl_send_args *arg) if (sctx->proto >= 2) { u32 send_buf_num_pages; - sctx->send_max_size = ALIGN(SZ_16K + BTRFS_MAX_COMPRESSED, PAGE_SIZE); + sctx->send_max_size = BTRFS_SEND_BUF_SIZE_V2; sctx->send_buf = vmalloc(sctx->send_max_size); if (!sctx->send_buf) { ret = -ENOMEM; diff --git a/fs/btrfs/send.h b/fs/btrfs/send.h index f7585cfa7e52..4f5509cb1803 100644 --- a/fs/btrfs/send.h +++ b/fs/btrfs/send.h @@ -18,10 +18,12 @@ #endif /* - * In send stream v1, no command is larger than 64K. In send stream v2, no limit - * should be assumed. + * In send stream v1, no command is larger than 64K. In send stream v2, no + * limit should be assumed, the buffer size is set to be a header with + * compressed extent size. */ #define BTRFS_SEND_BUF_SIZE_V1 SZ_64K +#define BTRFS_SEND_BUF_SIZE_V2 ALIGN(SZ_16K + BTRFS_MAX_COMPRESSED, PAGE_SIZE) struct inode; struct btrfs_ioctl_send_args; |