Josef Bacik d55966c427 btrfs: do not zero f_bavail if we have available space ... There was some logic added a while ago to clear out f_bavail in statfs() if we did not have enough free metadata space to satisfy our global reserve. This was incorrect at the time, however didn't really pose a problem for normal file systems because we would often allocate chunks if we got this low on free metadata space, and thus wouldn't really hit this case unless we were actually full. Fast forward to today and now we are much better about not allocating metadata chunks all of the time. Couple this with d792b0f197 ("btrfs: always reserve our entire size for the global reserve") which now means we'll easily have a larger global reserve than our free space, we are now more likely to trip over this while still having plenty of space. Fix this by skipping this logic if the global rsv's space_info is not full. space_info->full is 0 unless we've attempted to allocate a chunk for that space_info and that has failed. If this happens then the space for the global reserve is definitely sacred and we need to report b_avail == 0, but before then we can just use our calculated b_avail. Reported-by: Martin Steigerwald <martin@lichtvoll.de> Fixes: ca8a51b3a9 ("btrfs: statfs: report zero available if metadata are exhausted") CC: stable@vger.kernel.org # 4.5+ Reviewed-by: Qu Wenruo <wqu@suse.com> Tested-By: Martin Steigerwald <martin@lichtvoll.de> Signed-off-by: Josef Bacik <josef@toxicpanda.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>		2020-02-02 18:49:32 +01:00
..
9p	9p pull request for inclusion in 5.4	2019-09-27 15:10:34 -07:00
adfs
affs	affs: fix a memory leak in affs_remount	2019-11-18 14:26:43 +01:00
afs	Merge branch 'dhowells' (patches from DavidH)	2020-01-14 09:56:31 -08:00
autofs	Merge branch 'next.autofs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-12-05 17:11:48 -08:00
befs
bfs
btrfs	btrfs: do not zero f_bavail if we have available space	2020-02-02 18:49:32 +01:00
cachefiles
ceph	ceph: add more debug info when decoding mdsmap	2019-12-09 20:55:10 +01:00
cifs	cifs: Optimize readdir on reparse points	2019-12-23 09:04:44 -06:00
coda
configfs	configfs: calculate the depth of parent item	2019-11-06 18:36:01 +01:00
cramfs	cramfs: fix usage on non-MTD device	2019-11-23 21:44:49 -05:00
crypto	treewide: Use sizeof_field() macro	2019-12-09 10:36:44 -08:00
debugfs	Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-12-06 09:06:58 -08:00
devpts
dlm
ecryptfs	compat_ioctl: remove most of fs/compat_ioctl.c	2019-12-01 13:46:15 -08:00
efivarfs
efs
erofs	Changes since last update:	2019-12-11 12:25:32 -08:00
exportfs	race in exportfs_decode_fh()	2019-11-11 09:21:59 -05:00
ext2	\n	2019-11-30 11:16:07 -08:00
ext4	Ext4 bug fixes (including a regression fix) for 5.5	2019-12-22 10:41:48 -08:00
f2fs	compat_ioctl: remove most of fs/compat_ioctl.c	2019-12-01 13:46:15 -08:00
fat	compat_ioctl: move drivers to compat_ptr_ioctl	2019-10-23 17:23:43 +02:00
freevxfs
fscache
fuse	fuse: fix fuse_send_readpages() in the syncronous read case	2020-01-16 11:09:36 +01:00
gfs2	GFS2 changes for this merge window:	2019-12-05 13:20:11 -08:00
hfs
hfsplus
hostfs
hpfs	fs: compat_ioctl: move FITRIM emulation into file systems	2019-10-23 17:23:46 +02:00
hugetlbfs	mm/hugetlbfs: fix for_each_hstate() loop in init_hugetlbfs_fs()	2020-01-03 10:39:08 -08:00
iomap	iomap: stop using ioend after it's been freed in iomap_finish_ioend()	2019-12-05 07:41:16 -08:00
isofs
jbd2	This merge window saw the the following new featuers added to ext4:	2019-11-30 10:53:02 -08:00
jffs2	Revert "jffs2: Fix possible null-pointer dereferences in jffs2_add_frag_to_fragtree()"	2019-11-29 11:29:58 +01:00
jfs
kernfs	Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-12-06 09:06:58 -08:00
lockd	NFSv4.1: Don't rebind to the same source port when reconnecting to the server	2019-11-03 21:28:45 -05:00
minix
nfs	reimplement path_mountpoint() with less magic	2020-01-15 01:36:06 -05:00
nfs_common
nfsd	This is a relatively quiet cycle for nfsd, mainly various bugfixes.	2019-12-07 16:56:00 -08:00
nilfs2	fs: compat_ioctl: move FITRIM emulation into file systems	2019-10-23 17:23:46 +02:00
nls
notify	fs: call fsnotify_sb_delete after evict_inodes	2019-12-18 00:03:01 -05:00
ntfs	ntfs: remove (un)?likely() from IS_ERR() conditions	2019-09-26 10:10:44 -07:00
ocfs2	ocfs2: fix the crash due to call ocfs2_get_dlm_debug once less	2020-01-04 13:55:09 -08:00
omfs
openpromfs
orangefs	orangefs: posix open permission checking...	2019-12-04 08:52:55 -05:00
overlayfs	overlayfs fixes for 5.5-rc2	2019-12-14 11:13:54 -08:00
proc	sched/cputime, proc/stat: Fix incorrect guest nice cpustat value	2019-12-11 07:09:58 +01:00
pstore	pstore/ram: Regularize prz label allocation lifetime	2020-01-08 17:05:45 -08:00
qnx4
qnx6
quota	fs: avoid softlockups in s_inodes iterators	2019-12-18 00:03:01 -05:00
ramfs
reiserfs	reiserfs: replace open-coded atomic_dec_and_mutex_lock()	2019-11-05 12:25:22 +01:00
romfs	Merge branch 'work.mount2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-09-19 10:06:57 -07:00
squashfs	Merge branch 'work.mount2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-09-19 10:06:57 -07:00
sysfs
sysv
tracefs	tracing: Do not create tracefs files if tracefs lockdown is in effect	2019-10-12 20:49:07 -04:00
ubifs	ubifs: ubifs_tnc_start_commit: Fix OOB in layout_in_gaps	2019-11-17 22:22:54 +01:00
udf
ufs
unicode
verity	treewide: Use sizeof_field() macro	2019-12-09 10:36:44 -08:00
xfs	xfs: Make the symbol 'xfs_rtalloc_log_count' static	2019-12-20 08:07:31 -08:00
aio.c	y2038: syscall implementation cleanups	2019-12-01 14:00:59 -08:00
anon_inodes.c
attr.c
bad_inode.c
binfmt_aout.c
binfmt_elf.c	fs/binfmt_elf.c: extract elf_read() function	2019-12-04 19:44:13 -08:00
binfmt_elf_fdpic.c	y2038: elfcore: Use __kernel_old_timeval for process times	2019-11-15 14:38:29 +01:00
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c
block_dev.c	block: don't send uevent for empty disk when not invalidating	2019-12-02 18:49:30 -07:00
buffer.c	fs: move guard_bio_eod() after bio_set_op_attrs	2020-01-09 08:16:12 -07:00
char_dev.c	chardev: Avoid potential use-after-free in 'chrdev_open()'	2020-01-06 20:10:26 +01:00
compat.c
compat_binfmt_elf.c	y2038: elfcore: Use __kernel_old_timeval for process times	2019-11-15 14:38:29 +01:00
compat_ioctl.c	New code for 5.5:	2019-12-02 14:46:22 -08:00
coredump.c
d_path.c
dax.c	New code for 5.5:	2019-11-30 10:44:49 -08:00
dcache.c	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-12-08 11:08:28 -08:00
dcookies.c
direct-io.c	fs/direct-io.c: include fs/internal.h for missing prototype	2020-01-04 13:55:09 -08:00
drop_caches.c	fs: avoid softlockups in s_inodes iterators	2019-12-18 00:03:01 -05:00
eventfd.c
eventpoll.c	fs/epoll: remove unnecessary wakeups of nested epoll	2019-12-04 19:44:13 -08:00
exec.c	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-12-03 12:20:25 -08:00
fcntl.c	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2019-12-08 11:08:28 -08:00
fhandle.c
file.c	Revert "fs: remove ksys_dup()"	2020-01-02 16:15:33 -08:00
file_table.c
filesystems.c
fs-writeback.c	cgroup,writeback: don't switch wbs immediately on dead wbs if the memcg is dead	2019-11-08 13:37:24 -07:00
fs_context.c
fs_parser.c
fs_pin.c
fs_struct.c
fs_types.c
fsopen.c
inode.c	fs: avoid softlockups in s_inodes iterators	2019-12-18 00:03:01 -05:00
internal.h	fs: move guard_bio_eod() after bio_set_op_attrs	2020-01-09 08:16:12 -07:00
io-wq.c	io-wq: cancel work if we fail getting a mm reference	2020-01-14 22:06:11 -07:00
io-wq.h	io-wq: re-add io_wq_current_is_worker()	2019-12-17 19:57:20 -07:00
io_uring.c	io_uring: only allow submit from owning task	2020-01-16 21:43:24 -07:00
ioctl.c	New code for 5.5:	2019-12-02 14:46:22 -08:00
Kconfig	io-wq: small threadpool implementation for io_uring	2019-10-29 12:43:00 -06:00
Kconfig.binfmt
libfs.c	fs/libfs.c: fix kernel-doc warning	2019-10-14 15:04:01 -07:00
locks.c	locks: print unsigned ino in /proc/locks	2019-12-29 09:00:58 -05:00
Makefile	io-wq: small threadpool implementation for io_uring	2019-10-29 12:43:00 -06:00
mbcache.c
mount.h
mpage.c	fs: move guard_bio_eod() after bio_set_op_attrs	2020-01-09 08:16:12 -07:00
namei.c	fix autofs regression caused by follow_managed() changes	2020-01-15 01:36:46 -05:00
namespace.c	fs/namespace.c: make to_mnt_ns() static	2020-01-04 13:55:09 -08:00
no-block.c
nsfs.c	fs/nsfs.c: include headers for missing declarations	2020-01-04 13:55:09 -08:00
open.c	Revert "vfs: properly and reliably lock f_pos in fdget_pos()"	2019-11-26 11:34:06 -08:00
pipe.c	pipe: fix empty pipe check in pipe_write()	2019-12-22 09:47:47 -08:00
pnode.c
pnode.h
posix_acl.c	fs/posix_acl.c: fix kernel-doc warnings	2020-01-04 13:55:09 -08:00
proc_namespace.c
read_write.c
readdir.c	filldir[64]: remove WARN_ON_ONCE() for bad directory entries	2019-10-18 18:41:16 -04:00
select.c	y2038: syscalls: change remaining timeval to __kernel_old_timeval	2019-11-15 14:38:29 +01:00
seq_file.c
signalfd.c
splice.c	pipe: remove 'waiting_writers' merging logic	2019-12-07 13:21:01 -08:00
stack.c
stat.c
statfs.c	vfs: Fix EOVERFLOW testing in put_compat_statfs64	2019-10-03 14:21:35 -07:00
super.c	fs: call fsnotify_sb_delete after evict_inodes	2019-12-18 00:03:01 -05:00
sync.c
timerfd.c	y2038: timerfd: Use timespec64 internally	2019-11-15 14:38:30 +01:00
userfaultfd.c	Merge branch 'akpm' (patches from Andrew)	2019-12-01 20:36:41 -08:00
utimes.c	y2038: syscalls: change remaining timeval to __kernel_old_timeval	2019-11-15 14:38:29 +01:00
xattr.c