commit 7e24969022cbd61ddc586f14824fc205661bb124 upstream.
Block layer usually doesn't support or allow zero-length bvec. Since
commit 1bdc76aea1 ("iov_iter: use bvec iterator to implement
iterate_bvec()"), iterate_bvec() switches to bvec iterator. However,
Al mentioned that 'Zero-length segments are not disallowed' in iov_iter.
Fixes for_each_bvec() so that it can move on after seeing one zero
length bvec.
Fixes: 1bdc76aea1 ("iov_iter: use bvec iterator to implement iterate_bvec()")
Reported-by: syzbot <syzbot+61acc40a49a3e46e25ea@syzkaller.appspotmail.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Tested-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: <stable@vger.kernel.org>
Link: https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg2262077.html
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ming Leiauthored and Greg Kroah-Hartmancommited 2020-09-12 11:47:36 +02:00
This patch makes CONFIG_PFK cover all the per-file key structures.
Otherwise, for example, f2fs will set DUN, resulting in IO fragmentation,
even if PFK is not set.
Bug: 68721442
Change-Id: I93808db0b00feae53888fd9ae6c91fc2727ffca9
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
Signed-off-by: Neeraj Soni <neersoni@codeaurora.org>
Jaegeuk Kimauthored and Neeraj Sonicommited 2018-08-29 17:03:14 +05:30
Hardware File Based Encryption (FBE) uses crypto engine to
encrypt the user data with unique key for each file.
File name and data both are encrypted with this feature.
1. security/pfk: changes to support per file
encryption for f2fs using hardware crypto engine.
2. fs/ext4: adapted crypto APIs for generic crypto layer.
3. fs/f2fs: support hardware crypto engine based per file
encryption.
4. fs/crypto: export APIs to support hardware crypto
engine based per file encryption.
Other changes made to provide support framework for per
file encryption.
Change-Id: I7981fa7f8f0c4bc058b80b7b8e342cfd81697c74
Signed-off-by: Neeraj Soni <neersoni@codeaurora.org>
Neeraj Soniauthored and Veerabhadrarao Badiganticommited 2018-05-28 10:56:49 +05:30
Due to the (indirect) nesting of min(..., min(...)), sparse will
show a variable shadowing warning whenever bvec.h is included.
Avoid that by assigning the inner min() to a temporary variable first.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Johannes Bergauthored and Jens Axboecommited 2016-08-11 09:41:35 -06:00
bvec_iter_advance() only writes the parameter of iterator,
so the base address of bvec can be marked as const safely.
Without the change, we can see compiling warning in the
following patch for implementing iterate_bvec(): lib/iov_iter.c
with bvec iterator.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Tested-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Ming Leiauthored and Jens Axboecommited 2016-06-09 10:02:47 -06:00
This patch moves 'struct bio_vec' and 'struct bvec_iter'
into 'include/linux/bvec.h', then always include this header
into 'include/linux/blk_types.h'.
With this change, both 'struct bvec_iter' and bvec iterator
helpers don't depend on CONFIG_BLOCK any more, then we can
use bvec iterator to implement iterate_bvec(): lib/iov_iter.c.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Suggested-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Tested-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Ming Leiauthored and Jens Axboecommited 2016-06-09 10:02:47 -06:00
bvec iterator helpers should be used to implement by
iterate_bvec():lib/iov_iter.c too, and move them into
one header, so that we can keep bvec iterator header
out of CONFIG_BLOCK. Then we can remove the reinventing
of wheel in iterate_bvec().
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Tested-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Ming Leiauthored and Jens Axboecommited 2016-06-09 10:00:58 -06:00
Michael Bestas
commited 
Ming Lei
authored and
Greg Kroah-Hartman
commited 
Jaegeuk Kim
authored and
Neeraj Soni
commited 
Veerabhadrarao Badiganti
commited 
Johannes Berg
authored and
Jens Axboe
commited 
Ming Lei
authored and