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If netfs_begin_read gets a NETFS_DIO_READ request that begins
past i_size, it won't perform any i/o and just return 0. This
will leak an increment to i_dio_count that is done at the top
of the function.
This can cause subsequent buffered read requests to block
indefinitely, waiting for a non existing dio operation to complete.
Add a inode_dio_end() for the NETFS_DIO_READ case, before returning.
Signed-off-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/20240129094924.1221977-2-dhowells@redhat.com
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: Jeff Layton <jlayton@kernel.org>
cc: <linux-afs@lists.infradead.org>
cc: <netfs@lists.linux.dev>
cc: <linux-fsdevel@vger.kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
2147caaac7