Btrfs: write_buf is now callable outside send.c

Developing service cmds needs it.

Signed-off-by: Anand Jain <anand.jain@oracle.com>

1 files changed, 6 insertions, 5 deletions

diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index c6ef070a8dca..c7beb543a4a8 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -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;