AuxXxilium/linux_dsm_epyc7002
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2b90883c56
linux_dsm_epyc7002/fs
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Johnny Chang 2b90883c56 btrfs: Check the compression level before getting a workspace 
When a file's compression property is set as zlib or zstd but leave
the compression mount option not be set, that means btrfs will try
to compress the file with default compression level. But in
btrfs_compress_pages(), it calls get_workspace() with level = 0.
This will return a workspace with a wrong compression level.
For zlib, the compression level in the workspace will be 0
(that means "store only"). And for zstd, the compression in the
workspace will be 1, not the default level 3.

How to reproduce:
  mkfs -t btrfs /dev/sdb
  mount /dev/sdb /mnt/
  mkdir /mnt/zlib
  btrfs property set /mnt/zlib/ compression zlib
  dd if=/dev/zero of=/mnt/zlib/compression-friendly-file-10M bs=1M count=10
  sync
  btrfs-debugfs -f /mnt/zlib/compression-friendly-file-10M

btrfs-debugfs output:
* before:
  ...
  (258 9961472): ram 524288 disk 1106247680 disk_size 524288
  file: ... extents 20 disk size 10485760 logical size 10485760 ratio 1.00

* after:
 ...
 (258 10354688): ram 131072 disk 14217216 disk_size 4096
 file: ... extents 80 disk size 327680 logical size 10485760 ratio 32.00

The steps for zstd are similar, but need to put a debugging message to
show the level of the return workspace in zstd_get_workspace().

This commit adds a check of the compression level before getting a
workspace by set_level().

CC: stable@vger.kernel.org # 5.1+
Signed-off-by: Johnny Chang <johnnyc@synology.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2019-05-03 18:21:25 +02:00
..
9p Pull request for inlusion in 5.1 2019-03-17 09:10:56 -07:00
adfs
affs
afs afs: Fix in-progess ops to ignore server-level callback invalidation 2019-04-13 08:37:37 +01:00
autofs autofs: clear O_NONBLOCK on the pipe 2019-03-07 18:32:01 -08:00
befs
bfs bfs: extra sanity checking and static inode bitmap 2019-01-04 13:13:47 -08:00
btrfs btrfs: Check the compression level before getting a workspace 2019-05-03 18:21:25 +02:00
cachefiles
ceph ceph: fix ci->i_head_snapc leak 2019-04-23 21:37:54 +02:00
cifs cifs: fix page reference leak with readv/writev 2019-04-24 12:33:59 -05:00
coda
configfs
cramfs
crypto fscrypt updates for v5.1 2019-03-09 10:54:24 -08:00
debugfs debugfs: fix use-after-free on symlink traversal 2019-04-01 00:31:02 -04:00
devpts fs/devpts: always delete dcache dentry-s in dput() 2019-01-24 13:38:30 -05:00
dlm socket: Rename SO_RCVTIMEO/ SO_SNDTIMEO with _OLD suffixes 2019-02-03 11:17:31 -08:00
ecryptfs crypto: clarify name of WEAK_KEY request flag 2019-01-25 18:41:52 +08:00
efivarfs
efs
exportfs
ext2 \n 2019-03-07 09:01:33 -08:00
ext4 Miscellaneous ext4 bug fixes for 5.1. 2019-03-24 13:41:37 -07:00
f2fs f2fs-for-5.1-rc1 2019-03-15 13:42:53 -07:00
fat fat: enable .splice_write to support splice on O_DIRECT file 2019-03-07 18:32:01 -08:00
freevxfs
fscache
fuse Merge branch 'page-refs' (page ref overflow) 2019-04-14 15:09:40 -07:00
gfs2 We've only got three patches ready for this merge window: 2019-03-09 11:52:11 -08:00
hfs
hfsplus hfsplus: return file attributes on statx 2019-01-04 13:13:47 -08:00
hostfs
hpfs hpfs: fix spelling mistake "partion" -> "partition" 2019-03-12 09:58:03 -07:00
hugetlbfs hugetlbfs: fix memory leak for resv_map 2019-04-05 16:02:31 -10:00
isofs
jbd2 jbd2: jbd2_get_transaction does not need to return a value 2019-03-01 00:36:57 -05:00
jffs2 jffs2: fix use-after-free on symlink traversal 2019-04-01 00:31:02 -04:00
jfs
kernfs Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 14:08:19 -07:00
lockd NFS: fix mount/umount race in nlmclnt. 2019-03-18 22:39:34 -04:00
minix
nfs NFSv4.1 fix incorrect return value in copy_file_range 2019-04-11 15:23:48 -04:00
nfs_common
nfsd nfsd: wake blocked file lock waiters before sending callback 2019-04-22 15:38:41 -04:00
nilfs2 XArray: Change xa_insert to return -EBUSY 2019-02-06 13:12:15 -05:00
nls
notify fanotify: Allow copying of file handle to userspace 2019-03-19 09:29:07 +01:00
ntfs
ocfs2 ocfs2: fix inode bh swapping mixup in ocfs2_reflink_inodes_lock 2019-03-29 10:01:37 -07:00
omfs
openpromfs
orangefs Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 13:27:20 -07:00
overlayfs ovl: Do not lose security.capability xattr over metadata file copy-up 2019-02-13 11:14:46 +01:00
proc fs/proc/proc_sysctl.c: Fix a NULL pointer dereference 2019-04-26 09:18:05 -07:00
pstore pstore/ram: Avoid needless alloc during header write 2019-02-12 13:45:53 -08:00
qnx4
qnx6
quota
ramfs
reiserfs
romfs
squashfs
sysfs Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-16 10:31:02 -07:00
sysv
tracefs
ubifs ubifs: fix use-after-free on symlink traversal 2019-04-01 00:31:02 -04:00
udf udf: Propagate errors from udf_truncate_extents() 2019-03-18 16:30:02 +01:00
ufs
xfs xfs: serialize unaligned dio writes against all other dio writes 2019-03-26 08:37:55 -07:00
aio.c aio: use kmem_cache_free() instead of kfree() 2019-04-04 20:13:59 -04:00
anon_inodes.c
attr.c
bad_inode.c
binfmt_aout.c a.out: remove core dumping support 2019-03-05 10:00:35 -08:00
binfmt_elf_fdpic.c
binfmt_elf.c fs/binfmt_elf.c: spread const a little 2019-03-07 18:32:01 -08:00
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c exec: load_script: Do not exec truncated interpreter path 2019-02-18 16:49:36 -08:00
block_dev.c block: fix the return errno for direct IO 2019-04-11 21:22:21 -06:00
buffer.c fs: fix guard_bio_eod to check for real EOD errors 2019-02-28 13:59:41 -07:00
char_dev.c
compat_binfmt_elf.c
compat_ioctl.c
compat.c
coredump.c
d_path.c
dax.c fs/dax: Deposit pagetable even when installing zero page 2019-03-13 13:58:46 -07:00
dcache.c fs/dcache: Track & report number of negative dentries 2019-01-30 11:02:11 -08:00
dcookies.c
direct-io.c block: allow bio_for_each_segment_all() to iterate over multi-page bvec 2019-02-15 08:40:11 -07:00
drop_caches.c fs/drop_caches.c: avoid softlockups in drop_pagecache_sb() 2019-02-01 15:46:24 -08:00
eventfd.c
eventpoll.c epoll: use rwlock in order to reduce ep_poll_callback() contention 2019-03-07 18:32:01 -08:00
exec.c exec: increase BINPRM_BUF_SIZE to 256 2019-03-07 18:32:01 -08:00
fcntl.c
fhandle.c
file_table.c fs: add fget_many() and fput_many() 2019-02-28 08:24:23 -07:00
file.c io_uring-2019-03-06 2019-03-08 14:48:40 -08:00
filesystems.c vfs: Implement a filesystem superblock creation/configuration context 2019-02-28 03:29:26 -05:00
fs_context.c vfs: Implement logging through fs_context 2019-02-28 03:29:37 -05:00
fs_parser.c fs: fs_parser: fix printk format warning 2019-03-29 10:01:38 -07:00
fs_pin.c
fs_struct.c
fs_types.c fs: common implementation of file type 2019-01-21 17:48:13 +01:00
fs-writeback.c writeback: synchronize sync(2) against cgroup writeback membership switches 2019-01-22 14:39:38 -07:00
inode.c fs/inode.c: inode_set_flags(): replace opencoded set_mask_bits() 2019-03-05 21:07:13 -08:00
internal.h vfs: Add configuration parser helpers 2019-02-28 03:28:53 -05:00
io_uring.c io_uring: remove 'state' argument from io_{read,write} path 2019-04-23 08:17:58 -06:00
ioctl.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
iomap.c block: add BIO_NO_PAGE_REF flag 2019-03-18 10:44:48 -06:00
Kconfig Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 14:08:19 -07:00
Kconfig.binfmt
libfs.c
locks.c locks: wake any locks blocked on request before deadlock check 2019-03-25 08:36:24 -04:00
Makefile Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 14:08:19 -07:00
mbcache.c
mount.h saner handling of temporary namespaces 2019-01-30 17:44:07 -05:00
mpage.c block: allow bio_for_each_segment_all() to iterate over multi-page bvec 2019-02-15 08:40:11 -07:00
namei.c Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 14:08:19 -07:00
namespace.c Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 14:08:19 -07:00
no-block.c
nsfs.c
open.c fs: stream_open - opener for stream-like files so that read and write can run simultaneously without deadlock 2019-04-06 07:01:55 -10:00
pipe.c Merge branch 'page-refs' (page ref overflow) 2019-04-14 15:09:40 -07:00
pnode.c separate copying and locking mount tree on cross-userns copies 2019-01-30 17:14:50 -05:00
pnode.h separate copying and locking mount tree on cross-userns copies 2019-01-30 17:14:50 -05:00
posix_acl.c
proc_namespace.c
read_write.c fs: stream_open - opener for stream-like files so that read and write can run simultaneously without deadlock 2019-04-06 07:01:55 -10:00
readdir.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
select.c y2038: syscalls: rename y2038 compat syscalls 2019-02-07 00:13:27 +01:00
seq_file.c
signalfd.c
splice.c There tracing fixes: 2019-04-26 11:09:55 -07:00
stack.c
stat.c fs: move generic stat response attr handling to vfs_getattr_nosec 2019-02-01 01:55:45 -05:00
statfs.c vfs: add vfs_get_fsid() helper 2019-02-07 16:38:35 +01:00
super.c vfs: Add some logging to the core users of the fs_context log 2019-02-28 03:29:38 -05:00
sync.c
timerfd.c y2038: syscalls: rename y2038 compat syscalls 2019-02-07 00:13:27 +01:00
userfaultfd.c coredump: fix race condition between mmget_not_zero()/get_task_mm() and core dumping 2019-04-19 09:46:05 -07:00
utimes.c y2038: syscalls: rename y2038 compat syscalls 2019-02-07 00:13:27 +01:00
xattr.c