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David Sterba 11561d2f7b btrfs: compression: don't try to compress if we don't have enough pages 
commit f2165627319ffd33a6217275e5690b1ab5c45763 upstream

The early check if we should attempt compression does not take into
account the number of input pages. It can happen that there's only one
page, eg. a tail page after some ranges of the BTRFS_MAX_UNCOMPRESSED
have been processed, or an isolated page that won't be converted to an
inline extent.

The single page would be compressed but a later check would drop it
again because the result size must be at least one block shorter than
the input. That can never work with just one page.

CC: stable@vger.kernel.org # 4.4+
Signed-off-by: David Sterba <dsterba@suse.com>
[sudip: adjust context]
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-28 13:31:02 +02:00
..
9p
9P: Cast to loff_t before multiplying
2020-11-05 11:43:34 +01:00
adfs
Merge branch 'work.adfs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-07-19 11:33:22 -07:00
affs
fs/affs: release old buffer head on error path
2021-03-04 10:26:48 +01:00
afs
afs: Fix tracepoint string placement with built-in AFS
2021-07-28 13:30:58 +02:00
autofs
autofs: fix a leak in autofs_expire_indirect()
2019-10-25 00:03:11 -04:00
befs
fs: Fill in max and min timestamps in superblock
2019-08-30 07:27:17 -07:00
bfs
bfs: don't use WARNING: string when it's just info.
2021-01-06 14:48:39 +01:00
btrfs
btrfs: compression: don't try to compress if we don't have enough pages
2021-07-28 13:31:02 +02:00
cachefiles
cachefiles: Handle readpage error correctly
2020-11-05 11:43:36 +01:00
ceph
ceph: remove bogus checks and WARN_ONs from ceph_set_page_dirty
2021-07-20 16:10:48 +02:00
cifs
cifs: prevent NULL deref in cifs_compose_mount_options()
2021-07-25 14:35:13 +02:00
coda
y2038: add inode timestamp clamping
2019-09-19 09:42:37 -07:00
configfs
configfs: fix memleak in configfs_release_bin_file
2021-07-14 16:53:46 +02:00
cramfs
cramfs: fix usage on non-MTD device
2019-11-23 21:44:49 -05:00
crypto
fscrypt: don't ignore minor_hash when hash is 0
2021-07-19 08:53:14 +02:00
debugfs
debugfs: do not attempt to create a new file before the filesystem is initalized
2021-03-04 10:26:10 +01:00
devpts
devpts_pty_kill(): don't bother with d_delete()
2019-09-03 09:30:56 -04:00
dlm
fs: dlm: fix memory leak when fenced
2021-07-14 16:53:17 +02:00
ecryptfs
Revert "ecryptfs: replace BUG_ON with error handling code"
2021-05-26 12:05:19 +02:00
efivarfs
efivarfs: revert "fix memory leak in efivarfs_create()"
2020-12-02 08:49:53 +01:00
efs
fs: Fill in max and min timestamps in superblock
2019-08-30 07:27:17 -07:00
erofs
erofs: add unsupported inode i_format check
2021-05-11 14:04:02 +02:00
exportfs
exportfs_decode_fh(): negative pinned may become positive without the parent locked
2019-11-10 11:56:05 -05:00
ext2
ext2: don't update mtime on COW faults
2020-09-09 19:12:30 +02:00
ext4
ext4: use ext4_grp_locked_error in mb_find_extent
2021-07-14 16:53:03 +02:00
f2fs
f2fs: Show casefolding support only when supported
2021-07-25 14:35:13 +02:00
fat
fat: don't allow to mount if the FAT length == 0
2020-06-17 16:40:36 +02:00
freevxfs
fs: Fill in max and min timestamps in superblock
2019-08-30 07:27:17 -07:00
fscache
…
fuse
fuse: reject internal errno
2021-07-14 16:53:09 +02:00
gfs2
gfs2: Fix use-after-free in gfs2_glock_shrink_scan
2021-06-18 09:58:59 +02:00
hfs
…
hfsplus
hfsplus: prevent corruption in shrinking truncate
2021-05-19 10:08:29 +02:00
hostfs
hostfs: fix memory handling in follow_link()
2021-04-14 08:24:14 +02:00
hpfs
fs: hpfs: Initialize filesystem timestamp ranges
2019-08-30 08:11:25 -07:00
hugetlbfs
hugetlbfs: fix mount mode command line processing
2021-07-28 13:31:01 +02:00
iomap
iomap: fix sub-page uptodate handling
2021-05-19 10:08:30 +02:00
isofs
isofs: release buffer head before return
2021-03-04 10:26:30 +01:00
jbd2
jbd2: fix up sparse warnings in checkpoint code
2020-11-18 19:20:30 +01:00
jffs2
jffs2: check the validity of dstlen in jffs2_zlib_compress()
2021-05-11 14:04:16 +02:00
jfs
fs/jfs: Fix missing error code in lmLogInit()
2021-07-20 16:10:42 +02:00
kernfs
kernfs: do not call fsnotify() with name without a parent
2020-08-19 08:16:12 +02:00
lockd
lockd: don't use interval-based rebinding over TCP
2020-12-30 11:51:16 +01:00
minix
fs/minix: remove expected error message in block_to_path()
2020-08-21 13:05:37 +02:00
nfs
NFSv4/pNFS: Don't call _nfs4_pnfs_v3_ds_connect multiple times
2021-07-20 16:10:50 +02:00
nfs_common
nfs_common: need lock during iterate through the list
2020-12-30 11:51:22 +01:00
nfsd
NFSD: fix error handling in NFSv4.0 callbacks
2021-04-07 14:47:39 +02:00
nilfs2
nilfs2: fix memory leak in nilfs_sysfs_delete_device_group
2021-06-30 08:47:50 -04:00
nls
…
notify
fanotify: fix ignore mask logic for events on child and on dir
2020-06-17 16:40:24 +02:00
ntfs
ntfs: fix validity check for file name attribute
2021-07-14 16:53:01 +02:00
ocfs2
ocfs2: fix snprintf() checking
2021-07-14 16:53:25 +02:00
omfs
fs: omfs: Initialize filesystem timestamp ranges
2019-08-30 08:11:25 -07:00
openpromfs
Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-07-19 10:42:02 -07:00
orangefs
orangefs: fix orangefs df output.
2021-07-20 16:10:48 +02:00
overlayfs
ovl: fix missing revert_creds() on error path
2021-05-14 09:44:16 +02:00
proc
proc: Avoid mixing integer types in mem_rw()
2021-07-28 13:30:58 +02:00
pstore
pstore: Fix typo in compression option name
2021-03-04 10:26:45 +01:00
qnx4
fs: Fill in max and min timestamps in superblock
2019-08-30 07:27:17 -07:00
qnx6
fs: Fill in max and min timestamps in superblock
2019-08-30 07:27:17 -07:00
quota
quota: Fix memory leak when handling corrupted quota file
2021-03-04 10:26:26 +01:00
ramfs
ramfs: fix nommu mmap with gaps in the page cache
2020-10-29 09:57:53 +01:00
reiserfs
reiserfs: add check for invalid 1st journal block
2021-07-19 08:53:08 +02:00
romfs
romfs: fix uninitialized memory leak in romfs_dev_read()
2020-08-26 10:40:51 +02:00
squashfs
squashfs: fix divide error in calculate_skip()
2021-05-19 10:08:29 +02:00
sysfs
sysfs: Add sysfs_emit and sysfs_emit_at to format sysfs output
2021-03-07 12:20:48 +01:00
sysv
fs: sysv: Initialize filesystem timestamp ranges
2019-08-30 07:27:18 -07:00
tracefs
tracing: Do not create tracefs files if tracefs lockdown is in effect
2019-10-12 20:49:07 -04:00
ubifs
ubifs: Set/Clear I_LINKABLE under i_lock for whiteout inode
2021-07-20 16:10:50 +02:00
udf
udf: Fix NULL pointer dereference in udf_symlink function
2021-07-19 08:53:08 +02:00
ufs
fs/ufs: avoid potential u32 multiplication overflow
2020-08-21 13:05:37 +02:00
unicode
unicode: make array 'token' static const, makes object smaller
2019-09-17 11:48:24 -04:00
verity
fs-verity: support builtin file signatures
2019-08-12 19:33:50 -07:00
xfs
xfs: Fix assert failure in xfs_setattr_size()
2021-03-07 12:20:42 +01:00
aio.c
aio: fix async fsync creds
2020-06-17 16:40:24 +02:00
anon_inodes.c
Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-07-19 10:42:02 -07:00
attr.c
utimes: Clamp the timestamps in notify_change()
2020-02-11 04:35:12 -08:00
bad_inode.c
…
binfmt_aout.c
…
binfmt_elf_fdpic.c
…
binfmt_elf.c
fs/binfmt_elf.c: allocate initialized memory in fill_thread_core_info()
2020-06-03 08:21:27 +02:00
binfmt_em86.c
…
binfmt_flat.c
binfmt_flat: revert "binfmt_flat: don't offset the data start"
2020-09-03 11:26:39 +02:00
binfmt_misc.c
binfmt_misc: fix possible deadlock in bm_register_write
2021-03-17 17:03:57 +01:00
binfmt_script.c
…
block_dev.c
block: reexpand iov_iter after read/write
2021-05-22 11:38:29 +02:00
buffer.c
fs: Don't invalidate page buffers in block_write_full_page()
2020-11-05 11:43:24 +01:00
char_dev.c
chardev: Avoid potential use-after-free in 'chrdev_open()'
2020-01-14 20:08:18 +01:00
compat_binfmt_elf.c
…
compat_ioctl.c
fix compat handling of FICLONERANGE, FIDEDUPERANGE and FS_IOC_FIEMAP
2020-01-09 10:20:05 +01:00
compat.c
…
coredump.c
coredump: fix core_pattern parse error
2020-12-11 13:23:30 +01:00
d_path.c
fs: fix NULL dereference due to data race in prepend_path()
2020-10-29 09:57:45 +01:00
dax.c
dax: fix ENOMEM handling in grab_mapping_entry()
2021-07-14 16:53:25 +02:00
dcache.c
fix dget_parent() fastpath race
2020-10-01 13:17:19 +02:00
dcookies.c
…
direct-io.c
fs: direct-io: fix missing sdio->boundary
2021-04-14 08:24:11 +02:00
drop_caches.c
fs: avoid softlockups in s_inodes iterators
2020-01-12 12:21:37 +01:00
eventfd.c
eventfd: track eventfd_signal() recursion depth
2020-02-11 04:35:37 -08:00
eventpoll.c
ep_create_wakeup_source(): dentry name can change under you...
2020-10-07 08:01:31 +02:00
exec.c
exec: Transform exec_update_mutex into a rw_semaphore
2021-01-09 13:44:55 +01:00
fcntl.c
fcntl: Fix potential deadlock in send_sig{io, urg}()
2021-01-06 14:48:39 +01:00
fhandle.c
fs/handle.c - fix up kerneldoc
2019-08-07 21:51:47 -04:00
file_table.c
vfs: Export flush_delayed_fput for use by knfsd.
2019-08-19 11:00:39 -04:00
file.c
fix multiplication overflow in copy_fdtable()
2020-05-27 17:46:12 +02:00
filesystems.c
fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once()
2020-04-17 10:50:21 +02:00
fs_context.c
vfs: subtype handling moved to fuse
2019-09-06 21:28:49 +02:00
fs_parser.c
vfs: Make fs_parse() handle fs_param_is_fd-type params better
2019-09-12 21:06:14 -04:00
fs_pin.c
switch the remnants of releasing the mountpoint away from fs_pin
2019-07-16 22:52:37 -04:00
fs_struct.c
…
fs_types.c
…
fs-writeback.c
writeback: fix obtain a reference to a freeing memcg css
2021-07-14 16:53:35 +02:00
fsopen.c
Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-07-19 10:42:02 -07:00
inode.c
futex: Fix inode life-time issue
2020-03-25 08:25:58 +01:00
internal.h
fs: move guard_bio_eod() after bio_set_op_attrs
2020-01-17 19:48:21 +01:00
io_uring.c
io_uring: Fix current->fs handling in io_sq_wq_submit_work()
2021-01-30 13:54:10 +01:00
ioctl.c
compat_ioctl: add compat_ptr_ioctl()
2019-12-17 19:55:30 +01:00
Kconfig
fs-verity for 5.4
2019-09-18 16:59:14 -07:00
Kconfig.binfmt
…
libfs.c
libfs: fix error cast of negative value in simple_attr_write()
2020-11-24 13:29:19 +01:00
locks.c
locks: reinstate locks_delete_block optimization
2020-03-25 08:25:41 +01:00
Makefile
fs-verity for 5.4
2019-09-18 16:59:14 -07:00
mbcache.c
…
mount.h
switch the remnants of releasing the mountpoint away from fs_pin
2019-07-16 22:52:37 -04:00
mpage.c
fs: move guard_bio_eod() after bio_set_op_attrs
2020-01-17 19:48:21 +01:00
namei.c
namei: only return -ECHILD from follow_dotdot_rcu()
2020-03-05 16:43:48 +01:00
namespace.c
fs/namespace.c: WARN if mnt_count has become negative
2021-01-06 14:48:40 +01:00
no-block.c
…
nsfs.c
…
open.c
cifs_atomic_open(): fix double-put on late allocation failure
2020-03-18 07:17:51 +01:00
pipe.c
…
pnode.c
propagate_one(): mnt_set_mountpoint() needs mount_lock
2020-05-02 08:48:44 +02:00
pnode.h
mount: fix mounting of detached mounts onto targets that reside on shared mounts
2021-03-17 17:03:33 +01:00
posix_acl.c
…
proc_namespace.c
vfs: subtype handling moved to fuse
2019-09-06 21:28:49 +02:00
read_write.c
fs: allow deduplication of eof block into the end of the destination file
2020-02-11 04:35:23 -08:00
readdir.c
readdir: make sure to verify directory entry for legacy interfaces too
2021-04-21 12:56:16 +02:00
select.c
kernel, fs: Introduce and use set_restart_fn() and arch_set_restart_data()
2021-03-24 11:26:44 +01:00
seq_file.c
seq_file: disallow extremely large seq buffer allocations
2021-07-20 16:10:54 +02:00
signalfd.c
fs/signalfd.c: fix inconsistent return codes for signalfd4
2020-08-26 10:40:58 +02:00
splice.c
splice: only read in as much information as there is pipe buffer space
2019-12-17 19:56:52 +01:00
stack.c
…
stat.c
…
statfs.c
vfs: Fix EOVERFLOW testing in put_compat_statfs64
2019-10-03 14:21:35 -07:00
super.c
vfs: remove lockdep bogosity in __sb_start_write
2020-11-24 13:29:01 +01:00
sync.c
…
timerfd.c
timerfd: Prepare for PREEMPT_RT
2019-08-01 20:51:23 +02:00
userfaultfd.c
userfaultfd: do not untag user pointers
2021-07-28 13:31:01 +02:00
utimes.c
utimes: Clamp the timestamps in notify_change()
2020-02-11 04:35:12 -08:00
xattr.c
xattr: break delegations in {set,remove}xattr
2020-08-11 15:33:39 +02:00