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linux-stable/fs/ext4
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Theodore Ts'o 6eeaf88fd5 ext4: don't use the orphan list when migrating an inode 
We probably want to remove the indirect block to extents migration
feature after a deprecation window, but until then, let's fix a
potential data loss problem caused by the fact that we put the
tmp_inode on the orphan list.  In the unlikely case where we crash and
do a journal recovery, the data blocks belonging to the inode being
migrated are also represented in the tmp_inode on the orphan list ---
and so its data blocks will get marked unallocated, and available for
reuse.

Instead, stop putting the tmp_inode on the oprhan list.  So in the
case where we crash while migrating the inode, we'll leak an inode,
which is not a disaster.  It will be easily fixed the next time we run
fsck, and it's better than potentially having blocks getting claimed
by two different files, and losing data as a result.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Lukas Czerner <lczerner@redhat.com>
Cc: stable@kernel.org
2022-01-10 13:25:56 -05:00
..
.kunitconfig ext4: add .kunitconfig fragment to enable ext4-specific tests 2021-02-11 23:16:30 -05:00
acl.c ext4: use ext4_journal_start/stop for fast commit transactions 2021-12-23 18:13:25 -05:00
acl.h vfs: add rcu argument to ->get_acl() callback 2021-08-18 22:08:24 +02:00
balloc.c ext4: flush background discard kwork when retry allocation 2021-08-30 23:35:53 -04:00
bitmap.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
block_validity.c ext4: standardize error message in ext4_protect_reserved_inode() 2020-12-17 13:30:55 -05:00
dir.c ext4: remove unnecessary 'offset' assignment 2022-01-10 13:25:56 -05:00
ext4.h ext4: use BUG_ON instead of if condition followed by BUG 2022-01-10 13:25:56 -05:00
ext4_extents.h ext4: fix sparse warnings 2021-08-30 23:36:50 -04:00
ext4_jbd2.c ext4: fix null-ptr-deref in '__ext4_journal_ensure_credits' 2022-01-10 13:25:55 -05:00
ext4_jbd2.h ext4: Support for checksumming from journal triggers 2021-08-30 23:36:50 -04:00
extents.c ext4: drop an always true check 2022-01-10 13:25:56 -05:00
extents_status.c ext4: correct the cache_nr in tracepoint ext4_es_shrink_exit 2021-06-22 21:34:17 -04:00
extents_status.h ext4: fix extent_status trace points 2020-01-25 02:03:03 -05:00
fast_commit.c ext4: remove redundant statement 2022-01-10 13:25:56 -05:00
fast_commit.h ext4: simplify updating of fast commit stats 2021-12-23 18:13:25 -05:00
file.c ext4: use ext4_journal_start/stop for fast commit transactions 2021-12-23 18:13:25 -05:00
fsmap.c treewide: Change list_sort to use const pointers 2021-04-08 16:04:22 -07:00
fsmap.h ext4: fsmap: fix the block/inode bitmap comment 2021-06-24 09:48:29 -04:00
fsync.c block: use an on-stack bio in blkdev_issue_flush 2021-01-27 09:51:48 -07:00
hash.c ext4: handle casefolding with encryption 2021-04-05 22:04:20 -04:00
ialloc.c ext4: Support for checksumming from journal triggers 2021-08-30 23:36:50 -04:00
indirect.c ext4: Support for checksumming from journal triggers 2021-08-30 23:36:50 -04:00
inline.c ext4: remove extent cache entries when truncating inline data 2021-09-09 10:52:05 -04:00
inode-test.c fs: ext4: Modify inode-test.c to use KUnit parameterized testing feature 2020-12-02 16:07:25 -07:00
inode.c ext4: remove useless resetting io_end_size in mpage_process_page() 2022-01-10 13:25:55 -05:00
ioctl.c ext4: implement support for get/set fs label 2022-01-10 13:25:55 -05:00
Kconfig ext: EXT4_KUNIT_TESTS should depend on EXT4_FS instead of selecting it 2021-02-11 23:12:59 -05:00
Makefile ext4: Move orphan inode handling into a separate file 2021-08-30 23:36:51 -04:00
mballoc.c ext4: change s_last_trim_minblks type to unsigned long 2022-01-10 13:25:55 -05:00
mballoc.h ext4: fix various seppling typos 2021-04-09 23:14:59 -04:00
migrate.c ext4: don't use the orphan list when migrating an inode 2022-01-10 13:25:56 -05:00
mmp.c ext4: fix potential uninitialized access to retval in kmmpd 2021-07-23 07:31:29 -04:00
move_extent.c ext4: remove redundant o_start statement 2022-01-10 13:25:56 -05:00
namei.c ext4: fix boolreturn.cocci warnings in fs/ext4/name.c 2021-11-04 10:33:25 -04:00
orphan.c ext4: Improve scalability of ext4 orphan file handling 2021-08-30 23:36:51 -04:00
page-io.c ext4: convert from atomic_t to refcount_t on ext4_io_end->count 2021-11-04 10:33:24 -04:00
readpage.c block: Add bio_max_segs 2021-02-26 15:49:51 -07:00
resize.c ext4: implement support for get/set fs label 2022-01-10 13:25:55 -05:00
super.c ext4: fix a copy and paste typo 2022-01-10 13:25:56 -05:00
symlink.c ext4: report correct st_size for encrypted symlinks 2021-07-25 20:01:06 -07:00
sysfs.c ext4: allow to change s_last_trim_minblks via sysfs 2022-01-10 13:25:55 -05:00
truncate.h ext4: Convert to use mapping->invalidate_lock 2021-07-13 14:29:00 +02:00
verity.c New features for ext4 this cycle include support for encrypted 2021-04-30 15:35:30 -07:00
xattr.c ext4: Support for checksumming from journal triggers 2021-08-30 23:36:50 -04:00
xattr.h ext4: remove duplicate definition of ext4_xattr_ibody_inline_set() 2021-06-24 10:09:39 -04:00
xattr_hurd.c acl: handle idmapped mounts 2021-01-24 14:27:17 +01:00
xattr_security.c acl: handle idmapped mounts 2021-01-24 14:27:17 +01:00
xattr_trusted.c acl: handle idmapped mounts 2021-01-24 14:27:17 +01:00
xattr_user.c acl: handle idmapped mounts 2021-01-24 14:27:17 +01:00