Commit a0548871 authored May 03, 2006 by Jens Axboe Committed by Jens Axboe May 04, 2006

[PATCH] splice: redo page lookup if add_to_page_cache() returns -EEXIST



This can happen quite easily, if several processes are trying to splice
the same file at the same time. It's not a failure, it just means someone
raced with us in allocating this file page. So just dump the allocated
page and relookup the original.

Signed-off-by: Jens Axboe <axboe@suse.de>

parent 76ad4d11

fs/splice.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -324,6 +324,8 @@ __generic_file_splice_read(struct file in, loff_t ppos,
		mapping_gfp_mask(mapping));
		if (unlikely(error)) {
		page_cache_release(page);
		if (error == -EEXIST)
		continue;
		break;
		}
		/*