提交 · 5d5d568975307877e9195f5305f4240e506a2807 · openeuler / raspberrypi-kernel

12 4月, 2015 40 次提交

make new_sync_{read,write}() static · 5d5d5689

由 Al Viro 提交于 4月 03, 2015

All places outside of core VFS that checked ->read and ->write for being NULL or
called the methods directly are gone now, so NULL {read,write} with non-NULL
{read,write}_iter will do the right thing in all cases.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

5d5d5689

A
coredump: accept any write method · 86cc0584
由 Al Viro 提交于 4月 03, 2015
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
86cc0584

switch /dev/loop to vfs_iter_write() · 283e7e5d

由 Al Viro 提交于 4月 03, 2015

all writable files that might be used as backing store for /dev/loop
already support ->write_iter()
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

283e7e5d

A
serial2002: switch to __vfs_read/__vfs_write · 79ff50c0
由 Al Viro 提交于 4月 03, 2015
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
79ff50c0
A
ashmem: use __vfs_read() · e1452866
由 Al Viro 提交于 4月 03, 2015
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
e1452866
A
export __vfs_read() · 3d04c8a1
由 Al Viro 提交于 4月 03, 2015
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
3d04c8a1
A
autofs: switch to __vfs_write() · a35fb914
由 Al Viro 提交于 4月 03, 2015
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
a35fb914
A
new helper: __vfs_write() · 493c84c0
由 Al Viro 提交于 4月 03, 2015
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
493c84c0
A

Merge branch '9p-iov_iter' into for-next · c48722c6
由 Al Viro 提交于 4月 11, 2015

c48722c6

switch hugetlbfs to ->read_iter() · 34d0640e

由 Al Viro 提交于 4月 03, 2015

... and fix the case when the area we are asked to read crosses
a hugepage boundary
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

34d0640e

coda: switch to ->read_iter/->write_iter · c12c49e7

由 Al Viro 提交于 4月 03, 2015

... and request the same from the local cache - all filesystems with
anything usable for that support those already.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

c12c49e7

A
ncpfs: switch to ->read_iter/->write_iter · 274a4886
由 Al Viro 提交于 4月 02, 2015
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
274a4886
A
net/9p: remove (now-)unused helpers · dcdbd7b2
由 Al Viro 提交于 4月 02, 2015
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
dcdbd7b2

p9_client_attach(): set fid->uid correctly · 21c9f5cc

由 Al Viro 提交于 4月 02, 2015

it's almost always equal to current_fsuid(), but there's an exception -
if the first writeback fid is opened by non-root *and* that happens before
root has done any lookups in /, we end up doing attach for root. The
current code leaves the resulting FID owned by root from the server POV
and by non-root from the client one. Unfortunately, it means that e.g.
massive dcache eviction will leave that user buggered - they'll end
up redoing walks from / *and* picking that FID every time. As soon as
they try to create something, the things will get nasty.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

21c9f5cc

A
9p: we are leaking glock.client_id in v9fs_file_getlock() · ce85dd58
由 Al Viro 提交于 4月 02, 2015
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
ce85dd58
A
9p: switch to ->read_iter/->write_iter · e494b6b5
由 Al Viro 提交于 4月 01, 2015
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
e494b6b5
A
9p: get rid of v9fs_direct_file_read() · 42b1ab97
由 Al Viro 提交于 4月 01, 2015
```
do it in ->direct_IO()...
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
42b1ab97
A
9p: switch p9_client_read() to passing struct iov_iter * · e1200fe6
由 Al Viro 提交于 4月 01, 2015
```
... and make it loop
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
e1200fe6
A
9p: get rid of v9fs_direct_file_write() · 9565a544
由 Al Viro 提交于 4月 01, 2015
```
just handle it in ->direct_IO()
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
9565a544
A
9p: fold v9fs_file_write_internal() into the caller · c711a6b1
由 Al Viro 提交于 4月 01, 2015
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
c711a6b1
A
9p: switch ->writepage() to direct use of p9_client_write() · 371098c6
由 Al Viro 提交于 4月 01, 2015
```
Don't mess with kmap() - just use ITER_BVEC.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
371098c6
A
9p: switch p9_client_write() to passing it struct iov_iter * · 070b3656
由 Al Viro 提交于 4月 01, 2015
```
... and make it loop until it's done
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
070b3656

net/9p: switch the guts of p9_client_{read,write}() to iov_iter · 4f3b35c1

由 Al Viro 提交于 4月 01, 2015

... and have get_user_pages_fast() mapping fewer pages than requested
to generate a short read/write.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

4f3b35c1

nommu: use __vfs_read() · 6e242a1c

由 Al Viro 提交于 3月 31, 2015

... instead of open-coding the call of ->read()
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

6e242a1c

acct: check FMODE_CAN_WRITE · d0f88f8d

由 Al Viro 提交于 3月 31, 2015

it's not calling ->write() directly anymore.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

d0f88f8d

aio_run_iocb(): kill dead check · 47e39362

由 Al Viro 提交于 3月 31, 2015

We check if ->ki_pos is positive.  However, by that point we have
already done rw_verify_area(), which would have rejected such
unless the file had been one of /dev/mem, /dev/kmem and /proc/kcore.
All of which do not have vectored rw methods, so we would've bailed
out even earlier.

This check had been introduced before rw_verify_area() had been added there
- in fact, it was a subset of checks done on sync paths by rw_verify_area()
(back then the /dev/mem exception didn't exist at all).  The rest of checks
(mandatory locking, etc.) hadn't been added until later.  Unfortunately,
by the time the call of rw_verify_area() got added, the /dev/mem exception
had already appeared, so it wasn't obvious that the older explicit check
downstream had become dead code.  It *is* a dead code, though, since the few
files for which the exception applies do not have ->aio_{read,write}() or
->{read,write}_iter() and for them we won't reach that check anyway.

What's more, even if we ever introduce vectored methods for /dev/mem
and friends, they'll have to cope with negative positions anyway, since
readv(2) and writev(2) are using the same checks as read(2) and write(2) -
i.e. rw_verify_area().

Let's bury it.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

47e39362

ioctx_alloc(): remove pointless check · 08397acd

由 Al Viro 提交于 3月 31, 2015

Way, way back kiocb used to be picked from arrays, so ioctx_alloc()
checked for multiplication overflow when calculating the size of
such array.  By the time fs/aio.c went into the tree (in 2002) they
were already allocated one-by-one by kmem_cache_alloc(), so that
check had already become pointless.  Let's bury it...
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

08397acd

A
lustre: kill unused members of struct vvp_thread_info · 23602adf
由 Al Viro 提交于 3月 30, 2015
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
23602adf

expand __fuse_direct_write() in both callers · 812408fb

由 Al Viro 提交于 3月 30, 2015

it's actually shorter that way *and* later we'll want iocb in scope
of generic_write_check() caller.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

812408fb

A
fuse: switch fuse_direct_io_file_operations to ->{read,write}_iter() · 15316263
由 Al Viro 提交于 3月 30, 2015
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
15316263
A
cuse: switch to iov_iter · cfa86a74
由 Al Viro 提交于 3月 21, 2015
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
cfa86a74
A

Merge branch 'for-davem' into for-next · 39c853eb
由 Al Viro 提交于 4月 11, 2015

39c853eb
A
sg_start_req(): use import_iovec() · fdc81f45
由 Al Viro 提交于 3月 21, 2015
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
fdc81f45

sg_start_req(): make sure that there's not too many elements in iovec · 451a2886

由 Al Viro 提交于 3月 21, 2015

unfortunately, allowing an arbitrary 16bit value means a possibility of
overflow in the calculation of total number of pages in bio_map_user_iov() -
we rely on there being no more than PAGE_SIZE members of sum in the
first loop there.  If that sum wraps around, we end up allocating
too small array of pointers to pages and it's easy to overflow it in
the second loop.

X-Coverup: TINC (and there's no lumber cartel either)
Cc: stable@vger.kernel.org # way, way back
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

451a2886

A
blk_rq_map_user(): use import_single_range() · 8f7e885a
由 Al Viro 提交于 3月 21, 2015
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
8f7e885a

sg_io(): use import_iovec() · e272b89f

由 Al Viro 提交于 3月 21, 2015

... and don't skip access_ok() validation.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

e272b89f

A
process_vm_access: switch to {compat_,}import_iovec() · 17d17e72
由 Al Viro 提交于 3月 21, 2015
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
17d17e72
A
switch keyctl_instantiate_key_common() to iov_iter · b353a1f7
由 Al Viro 提交于 3月 17, 2015
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
b353a1f7
A
switch {compat_,}do_readv_writev() to {compat_,}import_iovec() · 0504c074
由 Al Viro 提交于 3月 21, 2015
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
0504c074
A
aio_setup_vectored_rw(): switch to {compat_,}import_iovec() · 32a56afa
由 Al Viro 提交于 3月 21, 2015
```
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
```
32a56afa