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| author | David Howells <dhowells@redhat.com> | 2023-05-22 14:49:49 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-05-24 08:42:15 -0600 |
| commit | 83aeff881e53fab5b46e4ceb5fb47fa0a22acba9 (patch) | |
| tree | ac965bd2351b9618aaa9374e1cf9d2b2d7727cf3 | |
| parent | c37222082f23c456664d1c3182a714670ab8f9a4 (diff) | |
| download | linux-stable-83aeff881e53fab5b46e4ceb5fb47fa0a22acba9.tar.gz linux-stable-83aeff881e53fab5b46e4ceb5fb47fa0a22acba9.tar.bz2 linux-stable-83aeff881e53fab5b46e4ceb5fb47fa0a22acba9.zip | |
splice: Make filemap_splice_read() check s_maxbytes
Make filemap_splice_read() check s_maxbytes analogously to filemap_read().
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christian Brauner <brauner@kernel.org>
cc: Steve French <stfrench@microsoft.com>
cc: Jens Axboe <axboe@kernel.dk>
cc: Al Viro <viro@zeniv.linux.org.uk>
cc: David Hildenbrand <david@redhat.com>
cc: John Hubbard <jhubbard@nvidia.com>
cc: linux-mm@kvack.org
cc: linux-block@vger.kernel.org
cc: linux-fsdevel@vger.kernel.org
Link: https://lore.kernel.org/r/20230522135018.2742245-3-dhowells@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | mm/filemap.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index a2006936a6ae..0fcb0b80c2e2 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2887,6 +2887,9 @@ ssize_t filemap_splice_read(struct file *in, loff_t *ppos, bool writably_mapped; int i, error = 0; + if (unlikely(*ppos >= in->f_mapping->host->i_sb->s_maxbytes)) + return 0; + init_sync_kiocb(&iocb, in); iocb.ki_pos = *ppos; |