Naoya Horiguchi dab2d3dc45 hugetlbfs: fix mmap failure in unaligned size request ... commit af73e4d950 upstream. The current kernel returns -EINVAL unless a given mmap length is "almost" hugepage aligned. This is because in sys_mmap_pgoff() the given length is passed to vm_mmap_pgoff() as it is without being aligned with hugepage boundary. This is a regression introduced in commit 40716e2924 ("hugetlbfs: fix alignment of huge page requests"), where alignment code is pushed into hugetlb_file_setup() and the variable len in caller side is not changed. To fix this, this patch partially reverts that commit, and adds alignment code in caller side. And it also introduces hstate_sizelog() in order to get proper hstate to specified hugepage size. Addresses https://bugzilla.kernel.org/show_bug.cgi?id=56881 [akpm@linux-foundation.org: fix warning when CONFIG_HUGETLB_PAGE=n] Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reported-by: <iceman_dvd@yahoo.com> Cc: Steven Truelove <steven.truelove@utoronto.ca> Cc: Jianguo Wu <wujianguo@huawei.com> Cc: Hugh Dickins <hughd@google.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Jianguo Wu <wujianguo@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2013-05-19 10:54:48 -07:00
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compat.c	[PATCH v3] ipc: provide generic compat versions of IPC syscalls	2012-03-15 13:13:38 -04:00
compat_mq.c	ipc: initialize structure memory to zero for compat functions	2010-10-27 18:03:13 -07:00
ipc_sysctl.c	ipc: introduce shm_rmid_forced sysctl	2011-07-26 16:49:44 -07:00
ipcns_notifier.c
Makefile	Add generic sys_ipc wrapper	2010-03-12 15:52:32 -08:00
mq_sysctl.c	sysctl ipc: Remove dead binary sysctl support code.	2009-11-12 02:04:54 -08:00
mqueue.c	switch open-coded instances of d_make_root() to new helper	2012-03-20 21:29:35 -04:00
msg.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
msgutil.c	security: trim security.h	2012-02-14 10:45:42 +11:00
namespace.c	ns proc: Add support for the ipc namespace	2011-05-10 14:35:47 -07:00
sem.c	ipc/sem.c: remove private structures from public header file	2011-11-02 16:07:01 -07:00
shm.c	hugetlbfs: fix mmap failure in unaligned size request	2013-05-19 10:54:48 -07:00
syscall.c	ppc64 sys_ipc breakage in 2.6.34-rc2	2010-03-22 09:57:19 -07:00
util.c	ipc,rcu: Convert call_rcu(ipc_immediate_free) to kfree_rcu()	2011-07-20 14:10:16 -07:00
util.h	userns: user namespaces: convert several capable() calls	2011-03-23 19:47:08 -07:00