android_kernel_samsung_msm8976/include
Arnd Bergmann a3df077207 cred/userns: define current_user_ns() as a function
commit 0335695dfa4df01edff5bb102b9a82a0668ee51e upstream.

The current_user_ns() macro currently returns &init_user_ns when user
namespaces are disabled, and that causes several warnings when building
with gcc-6.0 in code that compares the result of the macro to
&init_user_ns itself:

  fs/xfs/xfs_ioctl.c: In function 'xfs_ioctl_setattr_check_projid':
  fs/xfs/xfs_ioctl.c:1249:22: error: self-comparison always evaluates to true [-Werror=tautological-compare]
    if (current_user_ns() == &init_user_ns)

This is a legitimate warning in principle, but here it isn't really
helpful, so I'm reprasing the definition in a way that shuts up the
warning.  Apparently gcc only warns when comparing identical literals,
but it can figure out that the result of an inline function can be
identical to a constant expression in order to optimize a condition yet
not warn about the fact that the condition is known at compile time.
This is exactly what we want here, and it looks reasonable because we
generally prefer inline functions over macros anyway.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Yaowei Bai <baiyaowei@cmss.chinamobile.com>
Cc: James Morris <james.l.morris@oracle.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2019-07-27 21:43:40 +02:00
..
acpi
asm-generic asm-generic: make copy_from_user() zero the destination properly 2019-07-27 21:42:13 +02:00
clocksource
crypto crypto: crypto_memneq - add equality testing of memory regions w/o timing leaks 2019-07-27 21:42:52 +02:00
drm Merge remote-tracking branch 'f2fs/linux-3.10.y' into HEAD 2017-04-18 17:02:28 +02:00
dt-bindings
keys UPSTREAM: KEYS: Separate the kernel signature checking keyring from module signing 2016-05-18 14:36:10 +05:30
kvm
linux cred/userns: define current_user_ns() as a function 2019-07-27 21:43:40 +02:00
math-emu
media Merge tag 'LA.BR.1.3.6-03510-8976.0' into HEAD 2017-04-18 12:11:50 +02:00
memory
misc
net netlabel: out of bound access in cipso_v4_validate() 2019-07-27 21:43:04 +02:00
pcmcia
ras
rdma RDMA/core: Fix incorrect structure packing for booleans 2019-07-27 21:43:09 +02:00
rxrpc
scsi Import latest Samsung release 2017-04-18 03:43:52 +02:00
sdp Import latest Samsung release 2017-04-18 03:43:52 +02:00
soc/qcom Merge tag 'LA.BR.1.3.6-03910-8976.0' of https://source.codeaurora.org/quic/la/kernel/msm-3.10 into HEAD 2017-05-26 13:28:48 +02:00
sound ANDROID: sound: rawmidi: Hold lock around realloc 2018-05-26 00:39:34 +02:00
target
trace tracing: Add #undef to fix compile error 2019-07-27 21:43:11 +02:00
uapi allow O_TMPFILE to work with O_WRONLY 2018-12-03 11:52:37 +01:00
video
xen Merge remote-tracking branch 'f2fs/linux-3.10.y' into HEAD 2017-04-18 17:02:28 +02:00
Kbuild