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syscall_get_error() is required to be implemented on all architectures
in addition to already implemented syscall_get_nr(),
syscall_get_arguments(), syscall_get_return_value(), and
syscall_get_arch() functions in order to extend the generic ptrace API
with PTRACE_GET_SYSCALL_INFO request.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Dmitry V. Levin <[email protected]>
Acked-by: Paul Burton <[email protected]>
Cc: Elvira Khabirova <[email protected]>
Cc: Eugene Syromyatnikov <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: James Hogan <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Greentime Hu <[email protected]>
Cc: Helge Deller <[email protected]> [parisc]
Cc: James E.J. Bottomley <[email protected]>
Cc: kbuild test robot <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Richard Kuo <[email protected]>
Cc: Shuah Khan <[email protected]>
Cc: Vincent Chen <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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syscall_get_* functions are required to be implemented on all
architectures in order to extend the generic ptrace API with
PTRACE_GET_SYSCALL_INFO request.
This adds remaining 2 syscall_get_* functions as documented in
asm-generic/syscall.h: syscall_get_error and syscall_get_return_value.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Dmitry V. Levin <[email protected]>
Cc: Richard Kuo <[email protected]>
Cc: Elvira Khabirova <[email protected]>
Cc: Eugene Syromyatnikov <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Greentime Hu <[email protected]>
Cc: Helge Deller <[email protected]> [parisc]
Cc: James E.J. Bottomley <[email protected]>
Cc: James Hogan <[email protected]>
Cc: kbuild test robot <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Paul Burton <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: Shuah Khan <[email protected]>
Cc: Vincent Chen <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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PTRACE_GET_SYSCALL_INFO is a generic ptrace API that lets ptracer obtain
details of the syscall the tracee is blocked in.
There are two reasons for a special syscall-related ptrace request.
Firstly, with the current ptrace API there are cases when ptracer cannot
retrieve necessary information about syscalls. Some examples include:
* The notorious int-0x80-from-64-bit-task issue. See [1] for details.
In short, if a 64-bit task performs a syscall through int 0x80, its
tracer has no reliable means to find out that the syscall was, in
fact, a compat syscall, and misidentifies it.
* Syscall-enter-stop and syscall-exit-stop look the same for the
tracer. Common practice is to keep track of the sequence of
ptrace-stops in order not to mix the two syscall-stops up. But it is
not as simple as it looks; for example, strace had a (just recently
fixed) long-standing bug where attaching strace to a tracee that is
performing the execve system call led to the tracer identifying the
following syscall-exit-stop as syscall-enter-stop, which messed up
all the state tracking.
* Since the introduction of commit 84d77d3f06e7 ("ptrace: Don't allow
accessing an undumpable mm"), both PTRACE_PEEKDATA and
process_vm_readv become unavailable when the process dumpable flag is
cleared. On such architectures as ia64 this results in all syscall
arguments being unavailable for the tracer.
Secondly, ptracers also have to support a lot of arch-specific code for
obtaining information about the tracee. For some architectures, this
requires a ptrace(PTRACE_PEEKUSER, ...) invocation for every syscall
argument and return value.
PTRACE_GET_SYSCALL_INFO returns the following structure:
struct ptrace_syscall_info {
__u8 op; /* PTRACE_SYSCALL_INFO_* */
__u32 arch __attribute__((__aligned__(sizeof(__u32))));
__u64 instruction_pointer;
__u64 stack_pointer;
union {
struct {
__u64 nr;
__u64 args[6];
} entry;
struct {
__s64 rval;
__u8 is_error;
} exit;
struct {
__u64 nr;
__u64 args[6];
__u32 ret_data;
} seccomp;
};
};
The structure was chosen according to [2], except for the following
changes:
* seccomp substructure was added as a superset of entry substructure
* the type of nr field was changed from int to __u64 because syscall
numbers are, as a practical matter, 64 bits
* stack_pointer field was added along with instruction_pointer field
since it is readily available and can save the tracer from extra
PTRACE_GETREGS/PTRACE_GETREGSET calls
* arch is always initialized to aid with tracing system calls such as
execve()
* instruction_pointer and stack_pointer are always initialized so they
could be easily obtained for non-syscall stops
* a boolean is_error field was added along with rval field, this way
the tracer can more reliably distinguish a return value from an error
value
strace has been ported to PTRACE_GET_SYSCALL_INFO. Starting with
release 4.26, strace uses PTRACE_GET_SYSCALL_INFO API as the preferred
mechanism of obtaining syscall information.
[1] https://lore.kernel.org/lkml/CA+55aFzcSVmdDj9Lh_gdbz1OzHyEm6ZrGPBDAJnywm2LF_eVyg@mail.gmail.com/
[2] https://lore.kernel.org/lkml/CAObL_7GM0n80N7J_DFw_eQyfLyzq+sf4y2AvsCCV88Tb3AwEHA@mail.gmail.com/
This patch (of 7):
All syscall_get_*() and syscall_set_*() functions must be defined as
static inline as on all other architectures, otherwise asm/syscall.h
cannot be included in more than one compilation unit.
This bug has to be fixed in order to extend the generic
ptrace API with PTRACE_GET_SYSCALL_INFO request.
Link: http://lkml.kernel.org/r/[email protected]
Fixes: 1932fbe36e02 ("nds32: System calls handling")
Signed-off-by: Dmitry V. Levin <[email protected]>
Reported-by: kbuild test robot <[email protected]>
Acked-by: Greentime Hu <[email protected]>
Cc: Vincent Chen <[email protected]>
Cc: Elvira Khabirova <[email protected]>
Cc: Eugene Syromyatnikov <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Helge Deller <[email protected]> [parisc]
Cc: James E.J. Bottomley <[email protected]>
Cc: James Hogan <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Paul Burton <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: Richard Kuo <[email protected]>
Cc: Shuah Khan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Change return type of dirty_one_transaction from int to void. As this
function always return success.
Fixes below issue reported by coccicheck:
fs/reiserfs/journal.c:1690:5-8: Unneeded variable: "ret". Return "0" on line 1719
Link: http://lkml.kernel.org/r/20190702175430.GA5882@hari-Inspiron-1545
Signed-off-by: Hariprasad Kelam <[email protected]>
Reviewed-by: Jan Kara <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Bharath Vedartham <[email protected]>
Cc: Hariprasad Kelam <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Fixes gcc '-Wunused-but-set-variable' warning:
fs/ufs/super.c: In function ufs_statfs:
fs/ufs/super.c:1409:32: warning: variable usb3 set but not used [-Wunused-but-set-variable]
It is not used since commmit c596961d1b4c ("ufs: fix s_size/s_dsize
users")
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: YueHaibing <[email protected]>
Cc: Evgeniy Dushistov <[email protected]>
Cc: Al Viro <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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strncpy() was used to copy a fixed size buffer. Since NUL-terminating
string is not required here, prefer a memcpy function. The generated
code (ppc32) remains the same.
Silence the following warning triggered using W=1:
fs/hfsplus/xattr.c:410:3: warning: 'strncpy' output truncated before terminating nul copying 4 bytes from a string of the same length [-Wstringop-truncation]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Mathieu Malaterre <[email protected]>
Reviewed-by: Vyacheslav Dubeyko <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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This adds support for partial file caching in Coda. Every read, write
and mmap informs the userspace cache manager about what part of a file
is about to be accessed so that the cache manager can ensure the
relevant parts are available before the operation is allowed to proceed.
When a read or write operation completes, this is also reported to allow
the cache manager to track when partially cached content can be
released.
If the cache manager does not support partial file caching, or when the
entire file has been fetched into the local cache, the cache manager may
return an EOPNOTSUPP error to indicate that intent upcalls are no longer
necessary until the file is closed.
[[email protected]: little whitespace fixup]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Pedro Cuadra <[email protected]>
Signed-off-by: Jan Harkes <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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This patch moves cfi check in coda_ftoc() instead of repeating it in the
wild.
Module size
text data bss dec hex filename
28297 1040 700 30037 7555 fs/coda/coda.ko.before
28263 980 700 29943 74f7 fs/coda/coda.ko.after
Link: http://lkml.kernel.org/r/a2c27663ec4547018c92d71c63b1dff4650b6546.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Fabian Frederick <[email protected]>
Signed-off-by: Jan Harkes <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Dan Carpenter <[email protected]>
Cc: David Howells <[email protected]>
Cc: Mikko Rapeli <[email protected]>
Cc: Sam Protsenko <[email protected]>
Cc: Yann Droneaud <[email protected]>
Cc: Zhouyang Jia <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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coda_fid_to_inode() is only called by coda_downcall() where sb is already
being tested.
Link: http://lkml.kernel.org/r/d2163b3136348faf83ba47dc2d65a5d0a9a135dd.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Fabian Frederick <[email protected]>
Signed-off-by: Jan Harkes <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Dan Carpenter <[email protected]>
Cc: David Howells <[email protected]>
Cc: Mikko Rapeli <[email protected]>
Cc: Sam Protsenko <[email protected]>
Cc: Yann Droneaud <[email protected]>
Cc: Zhouyang Jia <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Inspired by NFS sysctl process
Link: http://lkml.kernel.org/r/9afcc2cd09490849b309786bbf47fef75de7f91c.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Fabian Frederick <[email protected]>
Signed-off-by: Jan Harkes <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Dan Carpenter <[email protected]>
Cc: David Howells <[email protected]>
Cc: Mikko Rapeli <[email protected]>
Cc: Sam Protsenko <[email protected]>
Cc: Yann Droneaud <[email protected]>
Cc: Zhouyang Jia <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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init_coda_psdev() was only called by __init function.
Link: http://lkml.kernel.org/r/a12a5a135fa6b0ea997e1a0af4be0a235c463a24.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Fabian Frederick <[email protected]>
Signed-off-by: Jan Harkes <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Dan Carpenter <[email protected]>
Cc: David Howells <[email protected]>
Cc: Mikko Rapeli <[email protected]>
Cc: Sam Protsenko <[email protected]>
Cc: Yann Droneaud <[email protected]>
Cc: Zhouyang Jia <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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max_t expression was already defined in coda sources
Link: http://lkml.kernel.org/r/e6cda497ce8691db155cb35f8d13ea44ca6cedeb.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Fabian Frederick <[email protected]>
Signed-off-by: Jan Harkes <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Dan Carpenter <[email protected]>
Cc: David Howells <[email protected]>
Cc: Mikko Rapeli <[email protected]>
Cc: Sam Protsenko <[email protected]>
Cc: Yann Droneaud <[email protected]>
Cc: Zhouyang Jia <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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We can safely destroy vc_mutex at the end of umount process.
Link: http://lkml.kernel.org/r/f436f68908c467c5663bc6a9251b52cd7b95d2a5.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Fabian Frederick <[email protected]>
Signed-off-by: Jan Harkes <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Dan Carpenter <[email protected]>
Cc: David Howells <[email protected]>
Cc: Mikko Rapeli <[email protected]>
Cc: Sam Protsenko <[email protected]>
Cc: Yann Droneaud <[email protected]>
Cc: Zhouyang Jia <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Nothing is left in this header that is used by userspace.
Link: http://lkml.kernel.org/r/bb11378cef94739f2cf89425dd6d302a52c64480.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Jan Harkes <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Dan Carpenter <[email protected]>
Cc: David Howells <[email protected]>
Cc: Fabian Frederick <[email protected]>
Cc: Mikko Rapeli <[email protected]>
Cc: Sam Protsenko <[email protected]>
Cc: Yann Droneaud <[email protected]>
Cc: Zhouyang Jia <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Move include/linux/coda_psdev.h to fs/coda/ as there's nothing else that
uses it.
Link: http://lkml.kernel.org/r/3ceeee0415a929b89fb02700b6b4b3a07938acb8.1558117389.git.jaharkes@cs.cmu.edu
Link: https://patchwork.kernel.org/patch/10590257/
Signed-off-by: David Howells <[email protected]>
Signed-off-by: Jan Harkes <[email protected]>
Cc: Yann Droneaud <[email protected]>
Cc: Jan Harkes <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Dan Carpenter <[email protected]>
Cc: Fabian Frederick <[email protected]>
Cc: Mikko Rapeli <[email protected]>
Cc: Sam Protsenko <[email protected]>
Cc: Zhouyang Jia <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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The out of tree module version had been bumped several times already,
but we haven't kept this in-tree one in sync, partly because most
changes go from here to the out-of-tree copy.
Link: http://lkml.kernel.org/r/8b0ab50a2da2f0180ac32c79d91811b4d1d0bd8b.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Jan Harkes <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Dan Carpenter <[email protected]>
Cc: David Howells <[email protected]>
Cc: Fabian Frederick <[email protected]>
Cc: Mikko Rapeli <[email protected]>
Cc: Sam Protsenko <[email protected]>
Cc: Yann Droneaud <[email protected]>
Cc: Zhouyang Jia <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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The CODA_FREE() macro just calls kvfree(). We can call that directly
instead.
Link: http://lkml.kernel.org/r/4950a94fd30ec5f84835dd4ca0bb67c0448672f5.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Dan Carpenter <[email protected]>
Signed-off-by: Jan Harkes <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: David Howells <[email protected]>
Cc: Fabian Frederick <[email protected]>
Cc: Mikko Rapeli <[email protected]>
Cc: Sam Protsenko <[email protected]>
Cc: Yann Droneaud <[email protected]>
Cc: Zhouyang Jia <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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These days we have kvzalloc() so we can delete CODA_ALLOC().
I made a couple related changes in coda_psdev_write(). First, I added
some error handling to avoid a NULL dereference if the allocation
failed. Second, I used kvmalloc() instead of kvzalloc() because we copy
over the memory on the next line so there is no need to zero it first.
Link: http://lkml.kernel.org/r/e56010c822e7a7cbaa8a238cf82ad31c67eaa800.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Dan Carpenter <[email protected]>
Signed-off-by: Jan Harkes <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: David Howells <[email protected]>
Cc: Fabian Frederick <[email protected]>
Cc: Mikko Rapeli <[email protected]>
Cc: Sam Protsenko <[email protected]>
Cc: Yann Droneaud <[email protected]>
Cc: Zhouyang Jia <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Move the 32-bit time_t problems to userspace.
Link: http://lkml.kernel.org/r/8d089068823bfb292a4020f773922fbd82ffad39.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Jan Harkes <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Dan Carpenter <[email protected]>
Cc: David Howells <[email protected]>
Cc: Fabian Frederick <[email protected]>
Cc: Mikko Rapeli <[email protected]>
Cc: Sam Protsenko <[email protected]>
Cc: Yann Droneaud <[email protected]>
Cc: Zhouyang Jia <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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We exchange file timestamps with user space using psdev device
read/write operations with a fixed but architecture specific binary
layout.
On 32-bit systems, this uses a 'timespec' structure that is defined by
the C library to contain two 32-bit values for seconds and nanoseconds.
As we get ready for the year 2038 overflow of the 32-bit signed seconds,
the kernel now uses 64-bit timestamps internally, and user space will do
the same change by changing the 'timespec' definition in the future.
Unfortunately, this breaks the layout of the coda_vattr structure, so we
need to redefine that in terms of something that does not change. I'm
introducing a new 'struct vtimespec' structure here that keeps the
existing layout, and the same change has to be done in the coda user
space copy of linux/coda.h before anyone can use that on a 32-bit
architecture with 64-bit time_t.
An open question is what should happen to actual times past y2038, as
they are now truncated to the last valid date when sent to user space,
and interpreted as pre-1970 times when a timestamp with the MSB set is
read back into the kernel. Alternatively, we could change the new
timespec64_to_coda()/coda_to_timespec64() functions to use a different
interpretation and extend the available range further to the future by
disallowing past timestamps. This would require more changes in the
user space side though.
Link: http://lkml.kernel.org/r/562b7324149461743e4fbe2fedbf7c242f7e274a.1558117389.git.jaharkes@cs.cmu.edu
Link: https://patchwork.kernel.org/patch/10474735/
Signed-off-by: Arnd Bergmann <[email protected]>
Signed-off-by: Jan Harkes <[email protected]>
Acked-by: Jan Harkes <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Dan Carpenter <[email protected]>
Cc: David Howells <[email protected]>
Cc: Fabian Frederick <[email protected]>
Cc: Mikko Rapeli <[email protected]>
Cc: Sam Protsenko <[email protected]>
Cc: Yann Droneaud <[email protected]>
Cc: Zhouyang Jia <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Trivial fix to clean up indentation, replace spaces with tab
Link: http://lkml.kernel.org/r/ffc2bfa5a37ffcdf891c51b2e2ed618103965b24.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Colin Ian King <[email protected]>
Signed-off-by: Jan Harkes <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Dan Carpenter <[email protected]>
Cc: David Howells <[email protected]>
Cc: Fabian Frederick <[email protected]>
Cc: Mikko Rapeli <[email protected]>
Cc: Sam Protsenko <[email protected]>
Cc: Yann Droneaud <[email protected]>
Cc: Zhouyang Jia <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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These constants only used internally and not exposed to userspace.
Link: http://lkml.kernel.org/r/baeafc30dad70d8b422ee679420099c2d8aa7da0.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Jan Harkes <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Dan Carpenter <[email protected]>
Cc: David Howells <[email protected]>
Cc: Fabian Frederick <[email protected]>
Cc: Mikko Rapeli <[email protected]>
Cc: Sam Protsenko <[email protected]>
Cc: Yann Droneaud <[email protected]>
Cc: Zhouyang Jia <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Probably safer to just show the unexpected length and debug it from the
userspace side.
Link: http://lkml.kernel.org/r/582ae759a4fdfa31a64c35de489fa4efabac09d6.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Jan Harkes <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Dan Carpenter <[email protected]>
Cc: David Howells <[email protected]>
Cc: Fabian Frederick <[email protected]>
Cc: Mikko Rapeli <[email protected]>
Cc: Sam Protsenko <[email protected]>
Cc: Yann Droneaud <[email protected]>
Cc: Zhouyang Jia <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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The kernel is self-contained project and can be built with bare-metal
toolchain. But bare-metal toolchain doesn't define __linux__. Because
of this u_quad_t type is not defined when using bare-metal toolchain and
codafs build fails. This patch fixes it by defining u_quad_t type
unconditionally.
Link: http://lkml.kernel.org/r/3cbb40b0a57b6f9923a9d67b53473c0b691a3eaa.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Sam Protsenko <[email protected]>
Signed-off-by: Jan Harkes <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Dan Carpenter <[email protected]>
Cc: David Howells <[email protected]>
Cc: Fabian Frederick <[email protected]>
Cc: Mikko Rapeli <[email protected]>
Cc: Yann Droneaud <[email protected]>
Cc: Zhouyang Jia <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Add checks to make sure the downcall message we got from the Coda cache
manager is large enough to contain the data it is supposed to have.
i.e. when we get a CODA_ZAPDIR we can access &out->coda_zapdir.CodaFid.
Link: http://lkml.kernel.org/r/894fb6b250add09e4e3935f14649f21284a5cb18.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Jan Harkes <[email protected]>
Reported-by: Dan Carpenter <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: David Howells <[email protected]>
Cc: Fabian Frederick <[email protected]>
Cc: Mikko Rapeli <[email protected]>
Cc: Sam Protsenko <[email protected]>
Cc: Yann Droneaud <[email protected]>
Cc: Zhouyang Jia <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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When fget fails, the lack of error-handling code may cause unexpected
results.
This patch adds error-handling code after calling fget.
Link: http://lkml.kernel.org/r/2514ec03df9c33b86e56748513267a80dd8004d9.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Zhouyang Jia <[email protected]>
Signed-off-by: Jan Harkes <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Dan Carpenter <[email protected]>
Cc: David Howells <[email protected]>
Cc: Fabian Frederick <[email protected]>
Cc: Mikko Rapeli <[email protected]>
Cc: Sam Protsenko <[email protected]>
Cc: Yann Droneaud <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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headers
Only users of upc_req in kernel side fs/coda/psdev.c and
fs/coda/upcall.c already include linux/coda_psdev.h.
Suggested by Jan Harkes <[email protected]> in
https://lore.kernel.org/lkml/[email protected]/
Fixes these include/uapi/linux/coda_psdev.h compilation errors in userspace:
linux/coda_psdev.h:12:19: error: field `uc_chain' has incomplete type
struct list_head uc_chain;
^
linux/coda_psdev.h:13:2: error: unknown type name `caddr_t'
caddr_t uc_data;
^
linux/coda_psdev.h:14:2: error: unknown type name `u_short'
u_short uc_flags;
^
linux/coda_psdev.h:15:2: error: unknown type name `u_short'
u_short uc_inSize; /* Size is at most 5000 bytes */
^
linux/coda_psdev.h:16:2: error: unknown type name `u_short'
u_short uc_outSize;
^
linux/coda_psdev.h:17:2: error: unknown type name `u_short'
u_short uc_opcode; /* copied from data to save lookup */
^
linux/coda_psdev.h:19:2: error: unknown type name `wait_queue_head_t'
wait_queue_head_t uc_sleep; /* process' wait queue */
^
Link: http://lkml.kernel.org/r/9f99f5ce6a0563d5266e6cf7aa9585aac2cae971.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Mikko Rapeli <[email protected]>
Signed-off-by: Jan Harkes <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Dan Carpenter <[email protected]>
Cc: David Howells <[email protected]>
Cc: Fabian Frederick <[email protected]>
Cc: Sam Protsenko <[email protected]>
Cc: Yann Droneaud <[email protected]>
Cc: Zhouyang Jia <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Part of a patch by Mikko Rapeli, as Arnd Bergman commented on the
original patch.
pid_t might differ between libc and the kernel, so the kernel
interface has to use types that the kernel defines.
Link: http://lkml.kernel.org/r/f374a71f4d351bc8c8b3ac18ad7765c88d806d10.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Mikko Rapeli <[email protected]>
Signed-off-by: Jan Harkes <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Dan Carpenter <[email protected]>
Cc: David Howells <[email protected]>
Cc: Fabian Frederick <[email protected]>
Cc: Sam Protsenko <[email protected]>
Cc: Yann Droneaud <[email protected]>
Cc: Zhouyang Jia <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
|
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Patch series "Coda updates".
The following patch series is a collection of various fixes for Coda,
most of which were collected from linux-fsdevel or linux-kernel but
which have as yet not found their way upstream.
This patch (of 22):
Various file systems expect that vma->vm_file points at their own file
handle, several use file_inode(vma->vm_file) to get at their inode or
use vma->vm_file->private_data. However the way Coda wrapped mmap on a
host file broke this assumption, vm_file was still pointing at the Coda
file and the host file systems would scribble over Coda's inode and
private file data.
This patch fixes the incorrect expectation and wraps vm_ops->open and
vm_ops->close to allow Coda to track when the vm_area_struct is
destroyed so we still release the reference on the Coda file handle at
the right time.
Link: http://lkml.kernel.org/r/0e850c6e59c0b147dc2dcd51a3af004c948c3697.1558117389.git.jaharkes@cs.cmu.edu
Signed-off-by: Jan Harkes <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Dan Carpenter <[email protected]>
Cc: David Howells <[email protected]>
Cc: Fabian Frederick <[email protected]>
Cc: Mikko Rapeli <[email protected]>
Cc: Sam Protsenko <[email protected]>
Cc: Yann Droneaud <[email protected]>
Cc: Zhouyang Jia <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Architectures which support kprobes have very similar boilerplate around
calling kprobe_fault_handler(). Use a helper function in kprobes.h to
unify them, based on the x86 code.
This changes the behaviour for other architectures when preemption is
enabled. Previously, they would have disabled preemption while calling
the kprobe handler. However, preemption would be disabled if this fault
was due to a kprobe, so we know the fault was not due to a kprobe
handler and can simply return failure.
This behaviour was introduced in commit a980c0ef9f6d ("x86/kprobes:
Refactor kprobes_fault() like kprobe_exceptions_notify()")
[[email protected]: export kprobe_fault_handler()]
Link: http://lkml.kernel.org/r/[email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Anshuman Khandual <[email protected]>
Reviewed-by: Dave Hansen <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Christophe Leroy <[email protected]>
Cc: Stephen Rothwell <[email protected]>
Cc: Andrey Konovalov <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Russell King <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Fenghua Yu <[email protected]>
Cc: Martin Schwidefsky <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: Yoshinori Sato <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Vineet Gupta <[email protected]>
Cc: James Hogan <[email protected]>
Cc: Paul Burton <[email protected]>
Cc: Ralf Baechle <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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This fixes a couple typos I noticed in the slab Kconfig:
sacrifies -> sacrifices
accellerate -> accelerate
Seeing as no other instances of these typos are found elsewhere in the
kernel and that I originally added one of the two, I can only assume
working on slab must have caused damage to the spelling centers of my
brain.
Link: http://lkml.kernel.org/r/201905292203.CD000546EB@keescook
Signed-off-by: Kees Cook <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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"passed_fileno" variable was deleted 11 years ago in 2.6.25.
Link: http://lkml.kernel.org/r/20190529201747.GA23248@avx2
Fixes: d20894a23708 ("Remove a.out interpreter support in ELF loader")
Signed-off-by: Alexey Dobriyan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
|
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Fixes gcc '-Wunused-but-set-variable' warning:
fs/binfmt_flat.c: In function load_flat_file:
fs/binfmt_flat.c:419:16: warning: variable inode set but not used [-Wunused-but-set-variable]
It's never used and can be removed.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: YueHaibing <[email protected]>
Cc: Al Viro <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Commit d91bff3011cf ("proc/sysctl: add shared variables for range
check") adds some shared const variables to be used instead of a local
copy in each source file. Warn when a chunk duplicates one of these
values in a ctl_table struct:
$ scripts/checkpatch.pl 0001-test-commit.patch
WARNING: duplicated sysctl range checking value 'zero', consider using the shared one in include/linux/sysctl.h
#27: FILE: arch/arm/kernel/isa.c:48:
+ .extra1 = &zero,
WARNING: duplicated sysctl range checking value 'int_max', consider using the shared one in include/linux/sysctl.h
#28: FILE: arch/arm/kernel/isa.c:49:
+ .extra2 = &int_max,
total: 0 errors, 2 warnings, 14 lines checked
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Matteo Croce <[email protected]>
Reviewed-by: Kees Cook <[email protected]>
Cc: Joe Perches <[email protected]>
Cc: Aaron Tomlin <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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As was already noted in rbtree.h, the logic to cache rb_first (or
rb_last) can easily be implemented externally to the core rbtree api.
Change the implementation to do just that. Previously the update of
rb_leftmost was wired deeper into the implmentation, but there were some
disadvantages to that - mostly, lib/rbtree.c had separate instantiations
for rb_insert_color() vs rb_insert_color_cached(), as well as rb_erase()
vs rb_erase_cached(), which were doing exactly the same thing save for
the rb_leftmost update at the start of either function.
text data bss dec hex filename
5405 120 0 5525 1595 lib/rbtree.o-vanilla
3827 96 0 3923 f53 lib/rbtree.o-patch
[[email protected]: changelog addition]
Link: http://lkml.kernel.org/r/20190628171416.by5gdizl3rcxk5h5@linux-r8p5
[[email protected]: coding-style fixes]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Michel Lespinasse <[email protected]>
Acked-by: Davidlohr Bueso <[email protected]>
Acked-by: Peter Zijlstra (Intel) <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
|
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Fix the following issues in test_meminit.c:
- |size| in fill_with_garbage_skip() should be signed so that it
doesn't overflow if it's not aligned on sizeof(*p);
- fill_with_garbage_skip() should actually skip |skip| bytes;
- do_kmem_cache_size() should deallocate memory in the RCU case.
Link: http://lkml.kernel.org/r/[email protected]
Fixes: 7e659650cbda ("lib: introduce test_meminit module")
Fixes: 94e8988d91c7 ("lib/test_meminit.c: fix -Wmaybe-uninitialized false positive")
Signed-off-by: Alexander Potapenko <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Kees Cook <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
|
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The conditional logic is too complicated for the compiler to fully
comprehend:
lib/test_meminit.c: In function 'test_meminit_init':
lib/test_meminit.c:236:5: error: 'buf_copy' may be used uninitialized in this function [-Werror=maybe-uninitialized]
kfree(buf_copy);
^~~~~~~~~~~~~~~
lib/test_meminit.c:201:14: note: 'buf_copy' was declared here
Simplify it by splitting out the non-rcu section.
Link: http://lkml.kernel.org/r/[email protected]
Fixes: af734ee6ec85 ("lib: introduce test_meminit module")
Signed-off-by: Arnd Bergmann <[email protected]>
Acked-by: Alexander Potapenko <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Due to some sad limitations in how kerneldoc comments are parsed, the
documentation in lib/string_helpers.c generates these warnings:
lib/string_helpers.c:236: WARNING: Unexpected indentation.
lib/string_helpers.c:241: WARNING: Block quote ends without a blank line; unexpected unindent.
lib/string_helpers.c:446: WARNING: Unexpected indentation.
lib/string_helpers.c:451: WARNING: Block quote ends without a blank line; unexpected unindent.
lib/string_helpers.c:474: WARNING: Unexpected indentation.
Rework the comments to obtain something like the desired result.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Jonathan Corbet <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Finish up what commit c2febafc6773 ("mm: convert generic code to 5-level
paging") started while levelling up P4D huge mapping support at par with
PUD and PMD. A new arch call back arch_ioremap_p4d_supported() is added
which just maintains status quo (P4D huge map not supported) on x86,
arm64 and powerpc.
When HAVE_ARCH_HUGE_VMAP is enabled its just a simple check from the
arch about the support, hence runtime effects are minimal.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Anshuman Khandual <[email protected]>
Acked-by: Thomas Gleixner <[email protected]>
Acked-by: Michael Ellerman <[email protected]> (powerpc)
Cc: Catalin Marinas <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Kirill A. Shutemov <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Stephen Rothwell <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Virtual address alignment is essential in ensuring correct clearing for
all intermediate level pgtable entries and freeing associated pgtable
pages. An unaligned address can end up randomly freeing pgtable page
that potentially still contains valid mappings. Hence also check it's
alignment along with existing phys_addr check.
Signed-off-by: Anshuman Khandual <[email protected]>
Reviewed-by: Catalin Marinas <[email protected]>
Cc: Toshi Kani <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Chintan Pandya <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Add tests for heap and pagealloc initialization. These can be used to
check init_on_alloc and init_on_free implementations as well as other
approaches to initialization.
Expected test output in the case the kernel provides heap initialization
(e.g. when running with either init_on_alloc=1 or init_on_free=1):
test_meminit: all 10 tests in test_pages passed
test_meminit: all 40 tests in test_kvmalloc passed
test_meminit: all 60 tests in test_kmemcache passed
test_meminit: all 10 tests in test_rcu_persistent passed
test_meminit: all 120 tests passed!
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Alexander Potapenko <[email protected]>
Acked-by: Kees Cook <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Nick Desaulniers <[email protected]>
Cc: Kostya Serebryany <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: Sandeep Patil <[email protected]>
Cc: Laura Abbott <[email protected]>
Cc: Jann Horn <[email protected]>
Cc: Marco Elver <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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This adds __GFP_NOWARN to the kmalloc()-portions of the overflow test to
avoid tainting the kernel. Additionally fixes up the math on wrap size
to be architecture and page size agnostic.
Link: http://lkml.kernel.org/r/201905282012.0A8767E24@keescook
Fixes: ca90800a91ba ("test_overflow: Add memory allocation overflow tests")
Signed-off-by: Kees Cook <[email protected]>
Reported-by: Randy Dunlap <[email protected]>
Suggested-by: Rasmus Villemoes <[email protected]>
Cc: Joe Perches <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Make sure that the trailing NUL is considered part of the string and can
be found.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Peter Rosin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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If a memsetXX implementation is completely broken and fails in the first
iteration, when i, j, and k are all zero, the failure is masked as zero
is returned. Failing in the first iteration is perhaps the most likely
failure, so this makes the tests pretty much useless. Avoid the
situation by always setting a random unused bit in the result on
failure.
Link: http://lkml.kernel.org/r/[email protected]
Fixes: 03270c13c5ff ("lib/string.c: add testcases for memset16/32/64")
Signed-off-by: Peter Rosin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Patch series "lib/string: search for NUL with strchr/strnchr".
I noticed an inconsistency where strchr and strnchr do not behave the
same with respect to the trailing NUL. strchr is standardised and the
kernel function conforms, and the kernel relies on the behavior. So,
naturally strchr stays as-is and strnchr is what I change.
While writing a few tests to verify that my new strnchr loop was sane, I
noticed that the tests for memset16/32/64 had a problem. Since it's all
about the lib/string.c file I made a short series of it all...
This patch (of 3):
strchr considers the terminating NUL to be part of the string, and NUL
can thus be searched for with that function. For consistency, do the
same with strnchr.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Peter Rosin <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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list_del() poisoning can generate 2 64-bit immediate loads but it also can
generate one 64-bit immediate load and an addition:
48 b8 00 01 00 00 00 00 ad de movabs rax,0xdead000000000100
48 89 47 58 mov QWORD PTR [rdi+0x58],rax
48 05 00 01 00 00 <=====> add rax,0x100
48 89 47 60 mov QWORD PTR [rdi+0x60],rax
However on x86_64 not all constants are equal: those within [-128, 127]
range can be added with shorter "add r64, imm32" instruction:
48 b8 00 01 00 00 00 00 ad de movabs rax,0xdead000000000100
48 89 47 58 mov QWORD PTR [rdi+0x58],rax
48 83 c0 22 <======> add rax,0x22
48 89 47 60 mov QWORD PTR [rdi+0x60],rax
Patch saves 2 bytes per some LIST_POISON2 usage.
(Slightly disappointing) space savings on F29 x86_64 config:
add/remove: 0/0 grow/shrink: 0/2164 up/down: 0/-5184 (-5184)
Function old new delta
zstd_get_workspace 548 546 -2
...
mlx4_delete_all_resources_for_slave 4826 4804 -22
Total: Before=83304131, After=83298947, chg -0.01%
New constants are:
0xdead000000000100
0xdead000000000122
Note: LIST_POISON1 can't be changed to ...11 because something in page
allocator requires low bit unset.
Link: http://lkml.kernel.org/r/20190513191502.GA8492@avx2
Signed-off-by: Alexey Dobriyan <[email protected]>
Cc: Vasiliy Kulikov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Add a command line switch --no-moderated to skip L: mailing lists marked
with 'moderated'.
Some people prefer not emailing moderated mailing lists as the
moderation time can be indeterminate and some emails can be
intentionally dropped by a moderator.
This can cause fragmentation of email threads when some are subscribed
to a moderated list but others are not and emails are dropped.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Joe Perches <[email protected]>
Tested-by: Peter Zijlstra (Intel) <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Fix this compilation warning on x86 by making flush_cache_vmap() inline.
lib/ioremap.c: In function 'ioremap_page_range':
lib/ioremap.c:214:16: warning: variable 'start' set but not used [-Wunused-but-set-variable]
unsigned long start;
^~~~~
While at it, convert all other similar functions to inline for
consistency.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Qian Cai <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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isa_page_to_bus() is deprecated and is no longer used anywhere. Remove
it entirely.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Stephen Kitt <[email protected]>
Acked-by: Thomas Gleixner <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Now that BIT() can be used from assembly code, we can safely replace
_BITUL() with equivalent BIT().
UAPI headers are still required to use _BITUL(), but there is no more
reason to use it in kernel headers. BIT() is shorter.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Masahiro Yamada <[email protected]>
Cc: Heiko Carstens <[email protected]>
Cc: Vasily Gorbik <[email protected]>
Cc: Christian Borntraeger <[email protected]>
Cc: Vineet Gupta <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Will Deacon <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
|