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Gustavo A. R. Silva f402cf03fc ocfs2: Use zero-sized array and struct_size() in kzalloc() 
Update the code to use a zero-sized array instead of a pointer in
structure ocfs2_slot_info and use struct_size() in kzalloc().

Notice that one of the more common cases of allocation size calculations
is finding the size of a structure that has a zero-sized array at the
end, along with memory for some number of elements for that array.  For
example:

  struct foo {
      int stuff;
      void *entry[];
  };

  instance = kzalloc(sizeof(struct foo) + sizeof(void *) * count, GFP_KERNEL);

Instead of leaving these open-coded and prone to type mistakes, we can
now use the new struct_size() helper:

  instance = kzalloc(struct_size(instance, entry, count), GFP_KERNEL);

This code was detected with the help of Coccinelle.

Link: http://lkml.kernel.org/r/20190108191903.GA22056@embeddedor
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Mark Fasheh <mfasheh@versity.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <joseph.qi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2019-03-05 21:07:13 -08:00
..
cluster ocfs2: fix a panic problem caused by o2cb_ctl 2019-03-05 21:07:13 -08:00
dlm ocfs2: improve ocfs2 Makefile 2018-12-28 12:11:45 -08:00
dlmfs Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
Kconfig
…
Makefile ocfs2: improve ocfs2 Makefile 2018-12-28 12:11:45 -08:00
acl.c ocfs2/acl: use 'ip_xattr_sem' to protect getting extended attribute 2018-01-31 17:18:35 -08:00
acl.h ocfs2: make ocfs2_set_acl() static 2017-09-06 17:27:24 -07:00
alloc.c ocfs2: fix the application IO timeout when fstrim is running 2019-03-05 21:07:13 -08:00
alloc.h ocfs2: try to reuse extent block in dealloc without meta_alloc 2018-01-31 17:18:35 -08:00
aops.c fs: don't open code lru_to_page() 2019-01-04 13:13:48 -08:00
aops.h ocfs2: keep the trace point consistent with the function name 2018-04-05 21:36:21 -07:00
blockcheck.c
…
blockcheck.h
…
buffer_head_io.c ocfs2: don't clear bh uptodate for block read 2018-12-28 12:11:46 -08:00
buffer_head_io.h ocfs2: clean up some unused function declarations 2017-11-15 18:21:01 -08:00
dcache.c
…
dcache.h
…
dir.c ocfs2: fix a misuse a of brelse after failing ocfs2_check_dir_entry 2018-11-03 10:09:37 -07:00
dir.h
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dlmglue.c ocfs2: fix the application IO timeout when fstrim is running 2019-03-05 21:07:13 -08:00
dlmglue.h ocfs2: ocfs2_inode_lock_tracker does not distinguish lock level 2018-06-07 17:34:33 -07:00
export.c ocfs2: fix potential use after free 2018-11-30 14:56:15 -08:00
export.h
…
extent_map.c ocfs2: add ocfs2_overwrite_io() 2018-01-31 17:18:35 -08:00
extent_map.h ocfs2: add ocfs2_overwrite_io() 2018-01-31 17:18:35 -08:00
file.c ocfs2: don't use iocb when EIOCBQUEUED returns 2018-11-03 10:09:37 -07:00
file.h ocfs2: clean up redundant function declarations 2018-06-07 17:34:33 -07:00
filecheck.c ocfs2: add duplicated ino number check 2018-04-05 21:36:22 -07:00
filecheck.h ocfs2: add kobject for online file check 2018-04-05 21:36:22 -07:00
heartbeat.c
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heartbeat.h
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inode.c ocfs2: clean up some unnecessary code 2018-08-17 16:20:27 -07:00
inode.h ocfs2: convert inode refcount test to a helper 2016-12-10 12:39:45 -08:00
ioctl.c ocfs2: eliminate a misreported warning 2018-06-07 17:34:33 -07:00
ioctl.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
journal.c ocfs2: clear journal dirty flag after shutdown journal 2018-12-28 12:11:45 -08:00
journal.h jbd2: add support for avoiding data writes during transaction commits 2016-04-24 00:56:07 -04:00
localalloc.c ocfs2: fix panic due to unrecovered local alloc 2018-12-28 12:11:45 -08:00
localalloc.h
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locks.c ocfs2: properly initial file_lock used for unlock. 2018-11-30 11:26:12 -05:00
locks.h
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mmap.c fs: ocfs2: use new return type vm_fault_t 2018-06-07 17:34:34 -07:00
mmap.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
move_extents.c ocfs2: fix deadlock caused by ocfs2_defrag_extent() 2018-11-30 14:56:13 -08:00
move_extents.h
…
namei.c ocfs2: drop a VLA in ocfs2_orphan_del() 2018-06-07 17:34:34 -07:00
namei.h
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ocfs1_fs_compat.h
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ocfs2.h ocfs2: fix the application IO timeout when fstrim is running 2019-03-05 21:07:13 -08:00
ocfs2_fs.h ocfs2: correct the comments position of struct ocfs2_dir_block_trailer 2018-06-07 17:34:34 -07:00
ocfs2_ioctl.h
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ocfs2_lockid.h ocfs2: add trimfs dlm lock resource 2018-01-31 17:18:35 -08:00
ocfs2_lockingver.h
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ocfs2_trace.h ocfs2: fix the application IO timeout when fstrim is running 2019-03-05 21:07:13 -08:00
quota.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
quota_global.c ocfs2: convert to new i_version API 2018-01-29 06:42:21 -05:00
quota_local.c ocfs2: return -EROFS when filesystem becomes read-only 2018-08-17 16:20:27 -07:00
refcounttree.c vfs: rework data cloning infrastructure 2018-11-02 09:33:08 -07:00
refcounttree.h ocfs2: remove ocfs2_reflink_remap_range 2018-10-30 10:45:48 +11:00
reservations.c
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reservations.h
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resize.c ocfs2: solve a problem of crossing the boundary in updating backups 2016-03-25 16:37:42 -07:00
resize.h
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slot_map.c ocfs2: Use zero-sized array and struct_size() in kzalloc() 2019-03-05 21:07:13 -08:00
slot_map.h
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stack_o2cb.c
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stack_user.c treewide: Align function definition open/close braces 2018-03-26 11:13:09 +02:00
stackglue.c ocfs2: remove ocfs2_is_o2cb_active() 2018-11-03 10:09:37 -07:00
stackglue.h ocfs2: remove ocfs2_is_o2cb_active() 2018-11-03 10:09:37 -07:00
suballoc.c ocfs2: remove two unused functions from suballoc.c 2018-04-05 21:36:22 -07:00
suballoc.h
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super.c ocfs2: fix the application IO timeout when fstrim is running 2019-03-05 21:07:13 -08:00
super.h ocfs2: remove unused declaration ocfs2_publish_get_mount_state() 2017-11-15 18:21:01 -08:00
symlink.c vfs: remove ".readlink = generic_readlink" assignments 2016-12-09 16:45:04 +01:00
symlink.h
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sysfile.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
sysfile.h
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uptodate.c ocfs2: remove unnecessary null pointer check before kmem_cache_destroy() 2018-04-05 21:36:22 -07:00
uptodate.h
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xattr.c ocfs2: use 'osb' instead of 'OCFS2_SB()' 2018-04-05 21:36:21 -07:00
xattr.h ocfs2: fix posix_acl_create deadlock 2016-05-12 15:52:50 -07:00