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linux-stable/fs/ext2
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Zhang Yi cc16d0bc1c ext2: correct max file size computing 
[ Upstream commit 50b3a81899 ]

We need to calculate the max file size accurately if the total blocks
that can address by block tree exceed the upper_limit. But this check is
not correct now, it only compute the total data blocks but missing
metadata blocks are needed. So in the case of "data blocks < upper_limit
&& total blocks > upper_limit", we will get wrong result. Fortunately,
this case could not happen in reality, but it's confused and better to
correct the computing.

  bits   data blocks   metadatablocks   upper_limit
  10        16843020            66051    2147483647
  11       134480396           263171    1073741823
  12      1074791436          1050627     536870911 (*)
  13      8594130956          4198403     268435455 (*)
  14     68736258060         16785411     134217727 (*)
  15    549822930956         67125251      67108863 (*)
  16   4398314962956        268468227      33554431 (*)

  [*] Need to calculate in depth.

Fixes: 1c2d14212b ("ext2: Fix underflow in ext2_max_size()")
Link: https://lore.kernel.org/r/20220212050532.179055-1-yi.zhang@huawei.com
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-04-15 14:18:13 +02:00
..
acl.c ext2: cache NULL when both default_acl and acl are NULL 2018-09-03 11:05:03 +02:00
acl.h
balloc.c ext2: fix sleeping in atomic bugs on error 2021-10-09 14:39:49 +02:00
dir.c ext2: use common file type conversion 2019-01-21 17:48:17 +01:00
ext2.h \n 2019-03-07 09:01:33 -08:00
file.c ext2: don't update mtime on COW faults 2020-09-09 19:12:30 +02:00
ialloc.c ext2: fix missing percpu_counter_inc 2020-08-21 13:05:26 +02:00
inode.c ext2: check err when partial != NULL 2019-12-17 19:56:43 +01:00
ioctl.c vfs: create a generic checking and prep function for FS_IOC_SETFLAGS 2019-07-01 08:25:34 -07:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile
namei.c ext2: support statx syscall 2019-02-18 15:14:43 +01:00
super.c ext2: correct max file size computing 2022-04-15 14:18:13 +02:00
symlink.c ext2: support statx syscall 2019-02-18 15:14:43 +01:00
xattr.c ext2: fix debug reference to ext2_xattr_cache 2020-04-23 10:36:41 +02:00
xattr.h
xattr_security.c
xattr_trusted.c
xattr_user.c