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877b5691f2
kernel_optimize_test/fs
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Eric Biggers 877b5691f2 crypto: shash - remove shash_desc::flags 
The flags field in 'struct shash_desc' never actually does anything.
The only ostensibly supported flag is CRYPTO_TFM_REQ_MAY_SLEEP.
However, no shash algorithm ever sleeps, making this flag a no-op.

With this being the case, inevitably some users who can't sleep wrongly
pass MAY_SLEEP.  These would all need to be fixed if any shash algorithm
actually started sleeping.  For example, the shash_ahash_*() functions,
which wrap a shash algorithm with the ahash API, pass through MAY_SLEEP
from the ahash API to the shash API.  However, the shash functions are
called under kmap_atomic(), so actually they're assumed to never sleep.

Even if it turns out that some users do need preemption points while
hashing large buffers, we could easily provide a helper function
crypto_shash_update_large() which divides the data into smaller chunks
and calls crypto_shash_update() and cond_resched() for each chunk.  It's
not necessary to have a flag in 'struct shash_desc', nor is it necessary
to make individual shash algorithms aware of this at all.

Therefore, remove shash_desc::flags, and document that the
crypto_shash_*() functions can be called from any context.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-04-25 15:38:12 +08:00
..
9p Pull request for inlusion in 5.1 2019-03-17 09:10:56 -07:00
adfs
affs
afs Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 14:08:19 -07:00
autofs autofs: clear O_NONBLOCK on the pipe 2019-03-07 18:32:01 -08:00
befs
bfs
btrfs for-5.1-part2-tag 2019-03-12 14:53:57 -07:00
cachefiles
ceph ceph: add mount option to limit caps count 2019-03-05 18:55:17 +01:00
cifs crypto: shash - remove shash_desc::flags 2019-04-25 15:38:12 +08:00
coda
configfs
cramfs
crypto crypto: shash - remove shash_desc::flags 2019-04-25 15:38:12 +08:00
debugfs
devpts
dlm
ecryptfs crypto: shash - remove shash_desc::flags 2019-04-25 15:38:12 +08:00
efivarfs
efs
exportfs
ext2 \n 2019-03-07 09:01:33 -08:00
ext4 crypto: shash - remove shash_desc::flags 2019-04-25 15:38:12 +08:00
f2fs crypto: shash - remove shash_desc::flags 2019-04-25 15:38:12 +08:00
fat fat: enable .splice_write to support splice on O_DIRECT file 2019-03-07 18:32:01 -08:00
freevxfs
fscache
fuse fuse update for 5.1 2019-03-12 14:46:26 -07:00
gfs2 We've only got three patches ready for this merge window: 2019-03-09 11:52:11 -08:00
hfs
hfsplus
hostfs
hpfs hpfs: fix spelling mistake "partion" -> "partition" 2019-03-12 09:58:03 -07:00
hugetlbfs Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 14:08:19 -07:00
isofs
jbd2 jbd2: jbd2_get_transaction does not need to return a value 2019-03-01 00:36:57 -05:00
jffs2
jfs
kernfs Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 14:08:19 -07:00
lockd NFS: Remove print_overflow_msg() 2019-02-13 11:53:45 -05:00
minix
nfs pNFS: Fix a typo in pnfs_update_layout 2019-03-12 16:04:51 -04:00
nfs_common
nfsd crypto: shash - remove shash_desc::flags 2019-04-25 15:38:12 +08:00
nilfs2
nls
notify fanotify: Make waits for fanotify events only killable 2019-02-21 11:47:23 +01:00
ntfs
ocfs2 ocfs2: Use zero-sized array and struct_size() in kzalloc() 2019-03-05 21:07:13 -08:00
omfs
openpromfs
orangefs Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 13:27:20 -07:00
overlayfs
proc pidfd patches for v5.1-rc1 2019-03-16 13:47:14 -07:00
pstore
qnx4
qnx6
quota
ramfs
reiserfs
romfs
squashfs
sysfs Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-16 10:31:02 -07:00
sysv
tracefs
ubifs crypto: shash - remove shash_desc::flags 2019-04-25 15:38:12 +08:00
udf udf: Drop pointless check from udf_sync_fs() 2019-02-21 19:25:36 +01:00
ufs
xfs Changes since last update: 2019-03-15 13:55:30 -07:00
aio.c Merge branch 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-03-05 14:08:26 -08:00
anon_inodes.c
attr.c
bad_inode.c
binfmt_aout.c a.out: remove core dumping support 2019-03-05 10:00:35 -08:00
binfmt_elf_fdpic.c
binfmt_elf.c fs/binfmt_elf.c: spread const a little 2019-03-07 18:32:01 -08:00
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c exec: load_script: Do not exec truncated interpreter path 2019-02-18 16:49:36 -08:00
block_dev.c block: add bio_set_polled() helper 2019-02-24 08:20:17 -07:00
buffer.c fs: fix guard_bio_eod to check for real EOD errors 2019-02-28 13:59:41 -07:00
char_dev.c
compat_binfmt_elf.c
compat_ioctl.c
compat.c
coredump.c
d_path.c
dax.c dax: Flush partial PMDs correctly 2019-03-01 17:24:48 -08:00
dcache.c
dcookies.c
direct-io.c block: allow bio_for_each_segment_all() to iterate over multi-page bvec 2019-02-15 08:40:11 -07:00
drop_caches.c
eventfd.c
eventpoll.c epoll: use rwlock in order to reduce ep_poll_callback() contention 2019-03-07 18:32:01 -08:00
exec.c exec: increase BINPRM_BUF_SIZE to 256 2019-03-07 18:32:01 -08:00
fcntl.c
fhandle.c
file_table.c fs: add fget_many() and fput_many() 2019-02-28 08:24:23 -07:00
file.c io_uring-2019-03-06 2019-03-08 14:48:40 -08:00
filesystems.c vfs: Implement a filesystem superblock creation/configuration context 2019-02-28 03:29:26 -05:00
fs_context.c vfs: Implement logging through fs_context 2019-02-28 03:29:37 -05:00
fs_parser.c vfs: Add configuration parser helpers 2019-02-28 03:28:53 -05:00
fs_pin.c
fs_struct.c
fs_types.c
fs-writeback.c
inode.c fs/inode.c: inode_set_flags(): replace opencoded set_mask_bits() 2019-03-05 21:07:13 -08:00
internal.h vfs: Add configuration parser helpers 2019-02-28 03:28:53 -05:00
io_uring.c mm: refactor readahead defines in mm.h 2019-03-12 10:04:01 -07:00
ioctl.c
iomap.c iomap: wire up the iopoll method 2019-02-24 08:20:17 -07:00
Kconfig Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 14:08:19 -07:00
Kconfig.binfmt
libfs.c
locks.c locking/percpu-rwsem: Remove preempt_disable variants 2019-02-28 07:55:37 +01:00
Makefile Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 14:08:19 -07:00
mbcache.c
mount.h
mpage.c block: allow bio_for_each_segment_all() to iterate over multi-page bvec 2019-02-15 08:40:11 -07:00
namei.c Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 14:08:19 -07:00
namespace.c Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 14:08:19 -07:00
no-block.c
nsfs.c
open.c
pipe.c Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 13:27:20 -07:00
pnode.c
pnode.h
posix_acl.c
proc_namespace.c
read_write.c Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 13:27:20 -07:00
readdir.c
select.c
seq_file.c
signalfd.c
splice.c Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 13:27:20 -07:00
stack.c
stat.c
statfs.c
super.c vfs: Add some logging to the core users of the fs_context log 2019-02-28 03:29:38 -05:00
sync.c
timerfd.c
userfaultfd.c
utimes.c
xattr.c