Mike Kravetz 1817889e3b mm/hugetlbfs: fix bugs in fallocate hole punch of areas with holes ... Hugh Dickins pointed out problems with the new hugetlbfs fallocate hole punch code. These problems are in the routine remove_inode_hugepages and mostly occur in the case where there are holes in the range of pages to be removed. These holes could be the result of a previous hole punch or simply sparse allocation. The current code could access pages outside the specified range. remove_inode_hugepages handles both hole punch and truncate operations. Page index handling was fixed/cleaned up so that the loop index always matches the page being processed. The code now only makes a single pass through the range of pages as it was determined page faults could not race with truncate. A cond_resched() was added after removing up to PAGEVEC_SIZE pages. Some totally unnecessary code in hugetlbfs_fallocate() that remained from early development was also removed. Tested with fallocate tests submitted here: http://librelist.com/browser//libhugetlbfs/2015/6/25/patch-tests-add-tests-for-fallocate-system-call/ And, some ftruncate tests under development Fixes: b5cec28d36 ("hugetlbfs: truncate_hugepages() takes a range of pages") Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com> Acked-by: Hugh Dickins <hughd@google.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: "Hillf Danton" <hillf.zj@alibaba-inc.com> Cc: <stable@vger.kernel.org> [4.3] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2015-11-20 16:17:32 -08:00
..
9p	Merge branch 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-11-13 18:02:30 -08:00
adfs
affs
afs
autofs4
befs
bfs
btrfs	Merge branch 'for-linus-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	2015-11-13 16:30:29 -08:00
cachefiles	FS-Cache: Add missing initialization of ret in cachefiles_write_page()	2015-11-16 20:38:43 -05:00
ceph	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client	2015-11-13 09:24:40 -08:00
cifs	Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6	2015-11-13 16:40:36 -08:00
coda
configfs	configfs: allow dynamic group creation	2015-11-20 16:17:32 -08:00
cramfs
debugfs	debugfs: fix refcount imbalance in start_creating	2015-11-11 02:04:44 -05:00
devpts
dlm	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2015-11-13 20:04:17 -08:00
ecryptfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2015-11-07 13:05:44 -08:00
efivarfs
efs
exofs	fs/exofs/namei.c: remove unnecessary new_valid_dev() check	2015-11-09 15:11:24 -08:00
exportfs
ext2	Merge branch 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-11-13 18:02:30 -08:00
ext4	Merge branch 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-11-13 18:02:30 -08:00
f2fs	Merge branch 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-11-13 18:02:30 -08:00
fat
freevxfs
fscache	FS-Cache: Handle a write to the page immediately beyond the EOF marker	2015-11-11 02:11:02 -05:00
fuse	Move locks API users to locks_lock_inode_wait()	2015-10-22 14:57:36 -04:00
gfs2	Merge branch 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-11-13 18:02:30 -08:00
hfs
hfsplus	xattr handlers: Pass handler to operations instead of flags	2015-11-13 20:34:32 -05:00
hostfs
hpfs	fs/hpfs/namei.c: remove unnecessary new_valid_dev() check	2015-11-09 15:11:24 -08:00
hugetlbfs	mm/hugetlbfs: fix bugs in fallocate hole punch of areas with holes	2015-11-20 16:17:32 -08:00
isofs
jbd2	Merge branch 'akpm' (patches from Andrew)	2015-11-07 14:32:45 -08:00
jffs2	xattr handlers: Pass handler to operations instead of flags	2015-11-13 20:34:32 -05:00
jfs	fs/jfs: remove unnecessary new_valid_dev() checks	2015-11-09 15:11:24 -08:00
kernfs
lockd	Mainly smaller bugfixes and cleanup. We're still finding some bugs from	2015-11-11 20:11:28 -08:00
logfs	mm, fs: introduce mapping_gfp_constraint()	2015-11-06 17:50:42 -08:00
minix
ncpfs	ncpfs: don't allow negative timeouts	2015-11-20 16:17:32 -08:00
nfs	Merge branch 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-11-13 18:02:30 -08:00
nfs_common
nfsd	nfsd: fix race with open / open upgrade stateids	2015-11-10 09:29:45 -05:00
nilfs2	Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-11-11 09:45:24 -08:00
nls
notify	inotify: actually check for invalid bits in sys_inotify_add_watch()	2015-11-05 19:34:48 -08:00
ntfs	mm, fs: introduce mapping_gfp_constraint()	2015-11-06 17:50:42 -08:00
ocfs2	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2015-11-13 20:04:17 -08:00
omfs
openpromfs
overlayfs	Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs	2015-10-31 14:49:19 -07:00
proc	Merge branch 'akpm' (patches from Andrew)	2015-11-07 14:32:45 -08:00
pstore	pstore: fix code comment to match code	2015-11-02 13:41:52 -08:00
qnx4
qnx6
quota
ramfs	mm, fs: obey gfp_mapping for add_to_page_cache()	2015-10-16 11:42:28 -07:00
reiserfs	Merge branch 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-11-13 18:02:30 -08:00
romfs
squashfs	squashfs: xattr simplifications	2015-11-13 20:34:33 -05:00
sysfs	platform/chrome: Branch for v4.4	2015-11-13 21:53:18 -08:00
sysv
tracefs	tracefs: Fix refcount imbalance in start_creating()	2015-11-04 22:13:45 -05:00
ubifs	Merge branch 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-11-13 18:02:30 -08:00
udf
ufs
xfs	Merge branch 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-11-13 18:02:30 -08:00
aio.c
anon_inodes.c
attr.c
bad_inode.c
binfmt_aout.c
binfmt_elf_fdpic.c	libnvdimm for 4.4:	2015-11-10 12:07:22 -08:00
binfmt_elf.c	Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-11-11 09:45:24 -08:00
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c
block_dev.c	fs/block_dev.c: Remove WARN_ON() when inode writeback fails	2015-11-11 09:36:57 -07:00
buffer.c	vfs: remove unused wrapper block_page_mkwrite()	2015-11-11 02:19:33 -05:00
char_dev.c
compat_binfmt_elf.c
compat_ioctl.c	i2c-dev: Fix typo in ioctl name reference	2015-10-23 23:26:43 +02:00
compat.c
coredump.c	coredump: change zap_threads() and zap_process() to use for_each_thread()	2015-11-06 17:50:42 -08:00
dax.c	Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm	2015-11-13 17:35:48 -08:00
dcache.c
dcookies.c
direct-io.c	Merge branch 'for-4.4/io-poll' of git://git.kernel.dk/linux-block	2015-11-10 17:23:49 -08:00
drop_caches.c
eventfd.c
eventpoll.c
exec.c
fcntl.c
fhandle.c
file_table.c
file.c	vfs: clear remainder of 'full_fds_bits' in dup_fd()	2015-11-05 23:05:32 -08:00
filesystems.c
fs_pin.c
fs_struct.c
fs-writeback.c	fs: fix writeback.c kernel-doc warnings	2015-11-11 02:18:27 -05:00
inode.c	fs: fix inode.c kernel-doc warning	2015-11-11 02:18:27 -05:00
internal.h
ioctl.c
Kconfig
Kconfig.binfmt
libfs.c
locks.c	locks: cleanup posix_lock_inode_wait and flock_lock_inode_wait	2015-10-22 14:57:42 -04:00
Makefile	ext4: promote ext4 over ext2 in the default probe order	2015-10-15 10:33:21 -04:00
mbcache.c
mount.h
mpage.c	mm, fs: introduce mapping_gfp_constraint()	2015-11-06 17:50:42 -08:00
namei.c	Merge branch 'akpm' (patches from Andrew)	2015-11-07 14:32:45 -08:00
namespace.c
no-block.c
nsfs.c
open.c
pipe.c	fs/pipe.c: return error code rather than 0 in pipe_write()	2015-11-11 02:18:26 -05:00
pnode.c
pnode.h
posix_acl.c	xattr handlers: Pass handler to operations instead of flags	2015-11-13 20:34:32 -05:00
proc_namespace.c
read_write.c
readdir.c
select.c
seq_file.c	fs, seqfile: always allow oom killer	2015-11-06 17:50:42 -08:00
signalfd.c
splice.c	mm, fs: introduce mapping_gfp_constraint()	2015-11-06 17:50:42 -08:00
stack.c
stat.c	fs/stat.c: remove unnecessary new_valid_dev() check	2015-11-09 15:11:24 -08:00
statfs.c
super.c
sync.c	fs/sync.c: make sync_file_range(2) use WB_SYNC_NONE writeback	2015-11-06 17:50:42 -08:00
timerfd.c
userfaultfd.c
utimes.c
xattr.c	9p: xattr simplifications	2015-11-13 20:34:33 -05:00