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btrfs: switch write_buf to kernel_write
Instead of playing with the addressing limits. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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670986ec01
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8e93157bdd
@ -539,33 +539,23 @@ static struct btrfs_path *alloc_path_for_send(void)
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static int write_buf(struct file *filp, const void *buf, u32 len, loff_t *off)
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{
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int ret;
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mm_segment_t old_fs;
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u32 pos = 0;
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old_fs = get_fs();
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set_fs(KERNEL_DS);
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while (pos < len) {
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ret = vfs_write(filp, (__force const char __user *)buf + pos,
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len - pos, off);
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ret = kernel_write(filp, buf + pos, len - pos, off);
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/* TODO handle that correctly */
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/*if (ret == -ERESTARTSYS) {
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continue;
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}*/
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if (ret < 0)
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goto out;
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return ret;
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if (ret == 0) {
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ret = -EIO;
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goto out;
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return -EIO;
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}
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pos += ret;
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}
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ret = 0;
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out:
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set_fs(old_fs);
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return ret;
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return 0;
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}
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static int tlv_put(struct send_ctx *sctx, u16 attr, const void *data, int len)
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