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aa66b0bb08869d93492bd817d2eae694ca743a3d
android_kernel_xiaomi_sm8450/fs/btrfs
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Kinglong Mee aa66b0bb08 btrfs: fix memory leak of fs_info in block group cache 
When starting up linux with btrfs filesystem, I got many memory leak
messages by kmemleak as,

unreferenced object 0xffff880066882000 (size 4096):
  comm "modprobe", pid 730, jiffies 4294690024 (age 196.599s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8174d52e>] kmemleak_alloc+0x4e/0xb0
    [<ffffffff811d09aa>] kmem_cache_alloc_trace+0xea/0x1e0
    [<ffffffffa03620fb>] btrfs_alloc_dummy_fs_info+0x6b/0x2a0 [btrfs]
    [<ffffffffa03624fc>] btrfs_alloc_dummy_block_group+0x5c/0x120 [btrfs]
    [<ffffffffa0360aa9>] btrfs_test_free_space_cache+0x39/0xed0 [btrfs]
    [<ffffffffa03b5a74>] trace_raw_output_xfs_attr_class+0x54/0xe0 [xfs]
    [<ffffffff81002122>] do_one_initcall+0xb2/0x1f0
    [<ffffffff811765aa>] do_init_module+0x5e/0x1e9
    [<ffffffff810fec09>] load_module+0x20a9/0x2690
    [<ffffffff810ff439>] SyS_finit_module+0xb9/0xf0
    [<ffffffff81757daf>] entry_SYSCALL_64_fastpath+0x12/0x76
    [<ffffffffffffffff>] 0xffffffffffffffff
unreferenced object 0xffff8800573f8000 (size 10256):
  comm "modprobe", pid 730, jiffies 4294690185 (age 196.460s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff8174d52e>] kmemleak_alloc+0x4e/0xb0
    [<ffffffff8119ca6e>] kmalloc_order+0x5e/0x70
    [<ffffffff8119caa4>] kmalloc_order_trace+0x24/0x90
    [<ffffffffa03620b3>] btrfs_alloc_dummy_fs_info+0x23/0x2a0 [btrfs]
    [<ffffffffa03624fc>] btrfs_alloc_dummy_block_group+0x5c/0x120 [btrfs]
    [<ffffffffa036603d>] run_test+0xfd/0x320 [btrfs]
    [<ffffffffa0366f34>] btrfs_test_free_space_tree+0x94/0xee [btrfs]
    [<ffffffffa03b5aab>] trace_raw_output_xfs_attr_class+0x8b/0xe0 [xfs]
    [<ffffffff81002122>] do_one_initcall+0xb2/0x1f0
    [<ffffffff811765aa>] do_init_module+0x5e/0x1e9
    [<ffffffff810fec09>] load_module+0x20a9/0x2690
    [<ffffffff810ff439>] SyS_finit_module+0xb9/0xf0
    [<ffffffff81757daf>] entry_SYSCALL_64_fastpath+0x12/0x76
    [<ffffffffffffffff>] 0xffffffffffffffff

This patch lets btrfs using fs_info stored in btrfs_root for
block group cache directly without allocating a new one.

Fixes: d0bd456074 ("Btrfs: add fragment=* debug mount option")
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2016-02-18 13:28:24 +01:00
..
tests
btrfs: fix memory leak of fs_info in block group cache
2016-02-18 13:28:24 +01:00
acl.c
Merge branch 'for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
2016-01-18 12:44:40 -08:00
async-thread.c
btrfs: async-thread: Fix a use-after-free error for trace
2016-01-25 16:50:26 -08:00
async-thread.h
btrfs: async_thread: Fix workqueue 'max_active' value when initializing
2015-08-31 11:46:40 -07:00
backref.c
btrfs: fix iterator with update error in backref.c
2016-01-15 19:27:18 +01:00
backref.h
btrfs: cleanup, remove inode_item_info helper
2015-01-14 19:23:47 +01:00
btrfs_inode.h
btrfs: put delayed item hook into inode
2016-01-07 14:26:58 +01:00
check-integrity.c
btrfs: use list_for_each_entry* in check-integrity.c
2016-01-07 14:38:42 +01:00
check-integrity.h
block: submit_bio_wait() conversions
2013-11-24 16:33:41 -07:00
compression.c
Merge branch 'akpm' (patches from Andrew)
2015-11-07 14:32:45 -08:00
compression.h
btrfs: constify structs with op functions or static definitions
2015-02-16 18:48:44 +01:00
ctree.c
Merge branch 'misc-cleanups-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.5
2016-01-11 06:08:37 -08:00
ctree.h
Merge branch 'for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
2016-01-22 11:49:21 -08:00
delayed-inode.c
btrfs: zero out delayed node upon allocation
2016-01-07 14:30:17 +01:00
delayed-inode.h
Btrfs: introduce the delayed inode ref deletion for the single link inode
2014-01-28 13:20:09 -08:00
delayed-ref.c
btrfs: better packing of btrfs_delayed_extent_op
2016-01-07 14:26:58 +01:00
delayed-ref.h
btrfs: better packing of btrfs_delayed_extent_op
2016-01-07 14:26:58 +01:00
dev-replace.c
btrfs: cleanup, stop casting for extent_map->lookup everywhere
2016-01-15 19:22:28 +01:00
dev-replace.h
Btrfs: add new sources for device replace code
2012-12-12 17:15:41 -05:00
dir-item.c
Btrfs: make xattr replace operations atomic
2014-11-20 17:20:07 -08:00
disk-io.c
Merge branch 'for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
2016-01-29 15:46:49 -08:00
disk-io.h
Merge branch 'misc-cleanups-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.5
2016-01-11 06:08:37 -08:00
export.c
BTRFS: support NFSv2 export
2015-10-06 06:55:23 -07:00
export.h
…
extent_io.c
Merge branch 'misc-cleanups-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.5
2016-01-11 06:08:37 -08:00
extent_io.h
Merge branch 'freespace-4.5' into for-linus-4.5
2015-12-23 13:29:09 -08:00
extent_map.c
btrfs: cleanup, stop casting for extent_map->lookup everywhere
2016-01-15 19:22:28 +01:00
extent_map.h
btrfs: cleanup, stop casting for extent_map->lookup everywhere
2016-01-15 19:22:28 +01:00
extent-tree.c
btrfs: Fix no_space in write and rm loop
2016-01-20 07:22:14 -08:00
file-item.c
btrfs: cleanup, use enum values for btrfs_path reada
2016-01-07 15:01:15 +01:00
file.c
btrfs: Continue write in case of can_not_nocow
2016-02-18 13:18:06 +01:00
free-space-cache.c
Merge branch 'misc-cleanups-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.5
2016-01-11 06:08:37 -08:00
free-space-cache.h
btrfs: constify remaining structs with function pointers
2016-01-07 15:01:14 +01:00
free-space-tree.c
Revert "btrfs: synchronize incompat feature bits with sysfs files"
2016-01-29 08:19:37 -08:00
free-space-tree.h
Btrfs: implement the free space B-tree
2015-12-17 12:16:47 -08:00
hash.c
btrfs: LLVMLinux: Remove VLAIS
2014-10-14 10:51:22 +02:00
hash.h
Btrfs: fix btrfs boot when compiled as built-in
2014-01-28 13:20:31 -08:00
inode-item.c
Btrfs: consolidate btrfs_error() to btrfs_std_error()
2015-09-29 16:30:00 +02:00
inode-map.c
Merge branch 'misc-for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.5
2016-01-19 18:21:30 -08:00
inode-map.h
Btrfs: Initialize btrfs_root->highest_objectid when loading tree root and subvolume roots
2016-01-15 19:25:02 +01:00
inode.c
Merge branch 'for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
2016-01-29 15:46:49 -08:00
ioctl.c
Revert "btrfs: synchronize incompat feature bits with sysfs files"
2016-01-29 08:19:37 -08:00
Kconfig
rcu: Make SRCU optional by using CONFIG_SRCU
2015-01-06 11:04:29 -08:00
locking.c
btrfs: cleanup, remove stray return statements
2016-01-07 14:30:52 +01:00
locking.h
btrfs: fix lockups from btrfs_clear_path_blocking
2014-11-19 10:34:35 -08:00
lzo.c
btrfs: constify structs with op functions or static definitions
2015-02-16 18:48:44 +01:00
Makefile
Btrfs: add free space tree sanity tests
2015-12-17 12:16:47 -08:00
math.h
btrfs: cleanup 64bit/32bit divs, compile time constants
2015-03-03 17:23:57 +01:00
ordered-data.c
Btrfs: change how we wait for pending ordered extents
2015-10-21 18:51:40 -07:00
ordered-data.h
Btrfs: change how we wait for pending ordered extents
2015-10-21 18:51:40 -07:00
orphan.c
btrfs: kill the key type accessor helpers
2014-09-17 13:37:12 -07:00
print-tree.c
btrfs: remove parameter blocksize from read_tree_block
2014-10-02 17:14:50 +02:00
print-tree.h
btrfs: make static code static & remove dead code
2013-05-06 15:55:23 -04:00
props.c
btrfs: cleanup iterating over prop_handlers array
2015-10-21 18:28:48 +02:00
props.h
Btrfs: add support for inode properties
2014-01-28 13:20:24 -08:00
qgroup.c
btrfs: qgroup: account shared subtree during snapshot delete
2015-11-25 05:27:33 -08:00
qgroup.h
btrfs: qgroup: Check if qgroup reserved space leaked
2015-10-21 18:41:10 -07:00
raid56.c
btrfs: raid56: Use raid_write_end_io for scrub
2016-01-20 07:22:18 -08:00
raid56.h
Btrfs: add RAID 5/6 BTRFS_RBIO_REBUILD_MISSING operation
2015-08-09 07:34:26 -07:00
rcu-string.h
Btrfs: use rcu to protect device->name
2012-06-14 21:29:16 -04:00
reada.c
btrfs: reada: Fix returned errno code
2015-10-21 18:29:50 +02:00
relocation.c
Merge branch 'for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
2016-01-29 15:46:49 -08:00
root-tree.c
Merge branch 'cleanups/for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.4
2015-10-21 18:21:40 -07:00
scrub.c
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
send.c
Btrfs: send, don't BUG_ON() when an empty symlink is found
2015-12-31 18:08:20 +00:00
send.h
Btrfs: use linux/sizes.h to represent constants
2016-01-07 14:38:02 +01:00
struct-funcs.c
Btrfs: rewrite BTRFS_SETGET_FUNCS
2012-07-23 16:28:06 -04:00
super.c
Revert "btrfs: synchronize incompat feature bits with sysfs files"
2016-01-29 08:19:37 -08:00
sysfs.c
btrfs: sysfs: check initialization state before updating features
2016-01-27 05:40:10 -08:00
sysfs.h
btrfs: sysfs: introduce helper for syncing bits with sysfs files
2016-01-21 18:50:40 +01:00
transaction.c
Merge branch 'misc-cleanups-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.5
2016-01-11 06:08:37 -08:00
transaction.h
btrfs: preallocate path for snapshot creation at ioctl time
2016-01-07 15:20:55 +01:00
tree-defrag.c
Btrfs: fix locking bugs when defragging leaves
2015-12-18 02:51:32 +00:00
tree-log.c
Btrfs: fix race between fsync and lockless direct IO writes
2016-01-25 16:50:26 -08:00
tree-log.h
Btrfs: fix metadata inconsistencies after directory fsync
2015-03-26 17:56:23 -07:00
ulist.c
btrfs: ulist: Add ulist_del() function.
2015-06-10 09:26:17 -07:00
ulist.h
btrfs: ulist: Add ulist_del() function.
2015-06-10 09:26:17 -07:00
uuid-tree.c
Btrfs: make btrfs_search_forward return with nodes unlocked
2014-09-17 13:38:02 -07:00
volumes.c
Revert "btrfs: synchronize incompat feature bits with sysfs files"
2016-01-29 08:19:37 -08:00
volumes.h
Merge branch 'misc-cleanups-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.5
2016-01-11 06:08:37 -08:00
xattr.c
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
xattr.h
btrfs: Use xattr handler infrastructure
2015-12-06 21:34:14 -05:00
zlib.c
btrfs: constify structs with op functions or static definitions
2015-02-16 18:48:44 +01:00