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linux-st/fs/ocfs2
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Changwei Ge 783fda856e ocfs2: no need try to truncate file beyond i_size 
Linux fallocate(2) with FALLOC_FL_PUNCH_HOLE mode set, its offset can
exceed the inode size.  Ocfs2 now doesn't allow that offset beyond inode
size.  This restriction is not necessary and violates fallocate(2)
semantics.

If fallocate(2) offset is beyond inode size, just return success and do
nothing further.

Otherwise, ocfs2 will crash the kernel.

  kernel BUG at fs/ocfs2//alloc.c:7264!
   ocfs2_truncate_inline+0x20f/0x360 [ocfs2]
   ocfs2_remove_inode_range+0x23c/0xcb0 [ocfs2]
   __ocfs2_change_file_space+0x4a5/0x650 [ocfs2]
   ocfs2_fallocate+0x83/0xa0 [ocfs2]
   vfs_fallocate+0x148/0x230
   SyS_fallocate+0x48/0x80
   do_syscall_64+0x79/0x170

Signed-off-by: Changwei Ge <chge@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20200407082754.17565-1-chge@linux.alibaba.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-10 15:36:21 -07:00
..
cluster
ocfs2: use memalloc_nofs_save instead of memalloc_noio_save
2020-04-02 09:35:26 -07:00
dlm
ocfs2: use scnprintf() for avoiding potential buffer overflow
2020-04-02 09:35:26 -07:00
dlmfs
ocfs2: make local header paths relative to C files
2020-01-31 10:30:36 -08:00
acl.c
ocfs2: fix passing zero to 'PTR_ERR' warning
2019-12-01 06:29:17 -08:00
acl.h
…
alloc.c
ocfs2: no need try to truncate file beyond i_size
2020-04-10 15:36:21 -07:00
alloc.h
…
aops.c
Merge tag 'notifications-pipe-prep-20191115' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
2019-11-30 14:12:13 -08:00
aops.h
…
blockcheck.c
…
blockcheck.h
…
buffer_head_io.c
…
buffer_head_io.h
…
dcache.c
…
dcache.h
…
dir.c
ocfs2: remove useless err
2020-04-02 09:35:25 -07:00
dir.h
…
dlmglue.c
ocfs2: use OCFS2_SEC_BITS in macro
2020-04-02 09:35:25 -07:00
dlmglue.h
…
export.c
…
export.h
…
extent_map.c
ocfs2: delete unnecessary checks before brelse()
2019-09-24 15:54:07 -07:00
extent_map.h
…
file.c
ocfs2: fix oops when writing cloned file
2020-02-04 03:05:23 +00:00
file.h
…
filecheck.c
…
filecheck.h
…
heartbeat.c
…
heartbeat.h
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inode.c
ocfs2: fix spelling mistake "ambigous" -> "ambiguous"
2019-09-24 15:54:07 -07:00
inode.h
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ioctl.c
Merge tag 'compat-ioctl-5.5' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground
2019-12-01 13:46:15 -08:00
ioctl.h
…
journal.c
ocfs2: replace zero-length array with flexible-array member
2020-04-02 09:35:25 -07:00
journal.h
ocfs2: fix a NULL pointer dereference when call ocfs2_update_inode_fsync_trans()
2020-01-31 10:30:36 -08:00
Kconfig
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localalloc.c
ocfs2: fix panic due to ocfs2_wq is null
2019-10-19 06:32:32 -04:00
localalloc.h
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locks.c
…
locks.h
…
Makefile
…
mmap.c
…
mmap.h
…
move_extents.c
…
move_extents.h
…
namei.c
ocfs2: roll back the reference count modification of the parent directory if an error occurs
2020-04-02 09:35:26 -07:00
namei.h
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ocfs1_fs_compat.h
…
ocfs2_fs.h
ocfs2: ocfs2_fs.h: replace zero-length array with flexible-array member
2020-04-02 09:35:26 -07:00
ocfs2_ioctl.h
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ocfs2_lockid.h
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ocfs2_lockingver.h
…
ocfs2_trace.h
…
ocfs2.h
…
quota_global.c
quota: Check that quota is not dirty before release
2019-10-31 19:07:42 +01:00
quota_local.c
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quota.h
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refcounttree.c
ocfs2: add missing annotations for ocfs2_refcount_cache_lock() and ocfs2_refcount_cache_unlock()
2020-04-02 09:35:25 -07:00
refcounttree.h
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reservations.c
ocfs2: remove unused macros
2020-04-02 09:35:25 -07:00
reservations.h
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resize.c
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resize.h
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slot_map.c
…
slot_map.h
…
stack_o2cb.c
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stack_user.c
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stackglue.c
ocfs2: remove FS_OCFS2_NM
2020-04-02 09:35:25 -07:00
stackglue.h
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suballoc.c
ocfs2: there is no need to log twice in several functions
2020-04-02 09:35:25 -07:00
suballoc.h
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super.c
ocfs2: use scnprintf() for avoiding potential buffer overflow
2020-04-02 09:35:26 -07:00
super.h
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symlink.c
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symlink.h
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sysfile.c
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sysfile.h
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uptodate.c
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uptodate.h
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xattr.c
Revert "fs: ocfs2: fix possible null-pointer dereferences in ocfs2_xa_prepare_entry()"
2019-11-22 09:11:18 -08:00
xattr.h
…