提交 1bcea355 编写于 作者: A Anand Jain 提交者: Chris Mason

Btrfs: write_buf is now callable outside send.c

Developing service cmds needs it.
Signed-off-by: NAnand Jain <anand.jain@oracle.com>
上级 b4f359ab
......@@ -386,7 +386,7 @@ static struct btrfs_path *alloc_path_for_send(void)
return path;
}
static int write_buf(struct send_ctx *sctx, const void *buf, u32 len)
int write_buf(struct file *filp, const void *buf, u32 len, loff_t *off)
{
int ret;
mm_segment_t old_fs;
......@@ -396,8 +396,7 @@ static int write_buf(struct send_ctx *sctx, const void *buf, u32 len)
set_fs(KERNEL_DS);
while (pos < len) {
ret = vfs_write(sctx->send_filp, (char *)buf + pos, len - pos,
&sctx->send_off);
ret = vfs_write(filp, (char *)buf + pos, len - pos, off);
/* TODO handle that correctly */
/*if (ret == -ERESTARTSYS) {
continue;
......@@ -553,7 +552,8 @@ static int send_header(struct send_ctx *sctx)
strcpy(hdr.magic, BTRFS_SEND_STREAM_MAGIC);
hdr.version = cpu_to_le32(BTRFS_SEND_STREAM_VERSION);
return write_buf(sctx, &hdr, sizeof(hdr));
return write_buf(sctx->send_filp, &hdr, sizeof(hdr),
&sctx->send_off);
}
/*
......@@ -590,7 +590,8 @@ static int send_cmd(struct send_ctx *sctx)
crc = crc32c(0, (unsigned char *)sctx->send_buf, sctx->send_size);
hdr->crc = cpu_to_le32(crc);
ret = write_buf(sctx, sctx->send_buf, sctx->send_size);
ret = write_buf(sctx->send_filp, sctx->send_buf, sctx->send_size,
&sctx->send_off);
sctx->total_send_size += sctx->send_size;
sctx->cmd_send_size[le16_to_cpu(hdr->cmd)] += sctx->send_size;
......
......@@ -130,4 +130,5 @@ enum {
#ifdef __KERNEL__
long btrfs_ioctl_send(struct file *mnt_file, void __user *arg);
int write_buf(struct file *filp, const void *buf, u32 len, loff_t *off);
#endif
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