BMC/Intel-BMC/linux.git/arch/um/os-Linux/file.c, branch dev-4.6

um: Update UBD to use pread/pwrite family of functions

2016-01-10T20:49:48+00:00

This decreases the number of syscalls per read/write by half. Signed-off-by: Anton Ivanov Signed-off-by: Richard Weinberger

um: Include sys/types.h for makedev(), major(), minor()

2015-06-25T20:42:21+00:00

The functions in question are not part of the POSIX standard, documentation however hints that the corresponding header shall be sys/types.h. C libraries other than glibc, namely musl, did not include that header via other ways and complained. Signed-off-by: Hans-Werner Hilse Signed-off-by: Richard Weinberger

um: Memory corruption on startup

2014-04-20T21:57:21+00:00

The reverse case of this race (you must msync before read) is well known. This is the not so common one. It can be triggered only on systems which do a lot of task switching and only at UML startup. If you are starting 200+ UMLs ~ 0.5% will always die without this fix. Signed-off-by: Anton Ivanov [rw: minor whitespace fixes] Signed-off-by: Richard Weinberger

um: ubd: Add REQ_FLUSH suppport

2013-09-07T08:56:49+00:00

UML's block device driver does not support write barriers, to support this this patch adds REQ_FLUSH suppport. Every time the block layer sends a REQ_FLUSH we fsync() now our backing file to guarantee data consistency. Reported-and-tested-by: Richard W.M. Jones Signed-off-by: Richard Weinberger

um: get rid of pointless include "..." where include <...> will do

2012-10-09T20:28:45+00:00

Signed-off-by: Al Viro Signed-off-by: Richard Weinberger

um: -include user.h for USER_OBJ, trim includes

2011-11-02T13:14:44+00:00

Signed-off-by: Al Viro Signed-off-by: Richard Weinberger

Deal with missing exports for hostfs

2010-08-09T20:47:25+00:00

Signed-off-by: Al Viro

uml: implement O_APPEND

2008-02-05T17:44:30+00:00

The .a flags in openflags never had an implementation. Signed-off-by: Jeff Dike Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

uml: style fixes in file.c

2008-02-05T17:44:29+00:00

arch/um/os-Linux/file.c needed some style work - updated the copyright cleaned up the includes CodingStyle fixes added some missing CATCH_EINTRs os_set_owner was unused, so it is gone all printks now have severities fcntl(F_GETFL) was being called without checking the return removed an obsolete comment Signed-off-by: Jeff Dike Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

uml: miscellaneous code cleanups

2008-02-05T17:44:29+00:00

Code tidying - the pid field of struct irq_fd isn't used, so it is removed os_set_fd_async needed to read flags before changing them, it doesn't need a pid passed in because it can call getpid itself, and a block of unused code needed deleting os_get_exec_close was unused, so it is removed ptrace_child called _exit for historical reasons which are no longer valid, so just calls exit instead Signed-off-by: Jeff Dike Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds