- 13 Mar, 2019 9 commits
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Jaegeuk Kim authored
This follows to give random number to i_generation along with commit 23253068 ("ext4: improve smp scalability for inode generation") This can be used for DUN for UFS HW encryption. Reviewed-by:
Chao Yu <yuchao0@huawei.com> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
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Gao Xiang authored
VFS will take inode_lock for readdir, therefore no need to take page lock in readdir at all just as the majority of other generic filesystems. This patch improves concurrency since .iterate_shared was introduced to VFS years ago. Signed-off-by:
Gao Xiang <gaoxiang25@huawei.com> Reviewed-by:
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Chao Yu authored
In error path of IPU, we didn't account iostat correctly, fix it. Signed-off-by:
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Chao Yu authored
For IPU path of f2fs_do_write_data_page(), in its error path, we need to release encrypted page and fscrypt context, otherwise it will cause memory leak. Signed-off-by:
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Chao Yu authored
This patch changes to allow failure of f2fs_bio_alloc() in __submit_flush_wait(), which can simulate flush error in checkpoint() for covering more error paths. Signed-off-by:
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Chao Yu authored
With current retry mechanism in f2fs_fill_super, first fill_super fails due to no memory, then second fill_super runs w/o recovery, if we succeed, we may lose fsynced data, it doesn't make sense. Let's retry fill_super only if it occurs non-ENOMEM error during recovery. Signed-off-by:
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Gao Xiang authored
Note that __GFP_ZERO is not supported for mempool_alloc, which also documented in the mempool_alloc comments. Signed-off-by:
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Zeng Guangyue authored
correct spelling mistake for "nunmber" Signed-off-by:
Zeng Guangyue <zengguangyue@hisilicon.com> Reviewed-by:
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Jaegeuk Kim authored
We have to cover whole headerfile with last #endif. Reviewed-by:
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- 06 Mar, 2019 8 commits
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Jaegeuk Kim authored
If we met this once, let fsck.f2fs clear this only. Note that, this addresses all the subtle fault injection test. Reviewed-by:
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Chao Yu authored
As Dan reported: "We put an upper bound on ->write_io_size_bits but we don't have a lower bound." So let's add lower bound check for ->write_io_size_bits in parse_options(). [We don't allow configuring ->write_io_size_bits to zero, since at least we need to fill one dummy page for aligned IO.] Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
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Chao Yu authored
We use below condition to check inline_xattr_size boundary: if (!F2FS_OPTION(sbi).inline_xattr_size || F2FS_OPTION(sbi).inline_xattr_size >= DEF_ADDRS_PER_INODE - F2FS_TOTAL_EXTRA_ATTR_SIZE - DEF_INLINE_RESERVED_SIZE - DEF_MIN_INLINE_SIZE) There is there problems in that check: - we should allow inline_xattr_size equaling to min size of inline {data,dentry} area. - F2FS_TOTAL_EXTRA_ATTR_SIZE and inline_xattr_size are based on different size unit, previous one is 4 bytes, latter one is 1 bytes. - DEF_MIN_INLINE_SIZE only indicate min size of inline data area, however, we need to consider min size of inline dentry area as well, minimal inline dentry should at least contain two entries: '.' and '..', so that min inline_dentry size is 40 bytes. .bitmap 1 * 1 = 1 .reserved 1 * 1 = 1 .dentry 11 * 2 = 22 .filename 8 * 2 = 16 total 40 Signed-off-by: -
Sahitya Tummala authored
Fix below warning coming because of using mutex lock in atomic context. BUG: sleeping function called from invalid context at kernel/locking/mutex.c:98 in_atomic(): 1, irqs_disabled(): 0, pid: 585, name: sh Preemption disabled at: __radix_tree_preload+0x28/0x130 Call trace: dump_backtrace+0x0/0x2b4 show_stack+0x20/0x28 dump_stack+0xa8/0xe0 ___might_sleep+0x144/0x194 __might_sleep+0x58/0x8c mutex_lock+0x2c/0x48 f2fs_trace_pid+0x88/0x14c f2fs_set_node_page_dirty+0xd0/0x184 Do not use f2fs_radix_tree_insert() to avoid doing cond_resched() with spin_lock() acquired. Signed-off-by:
Sahitya Tummala <stummala@codeaurora.org> Reviewed-by:
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Chao Yu authored
Previously, we changed lock from cp_rwsem to node_change, it solved the deadlock issue which was caused by below race condition: Thread A Thread B - f2fs_setattr - f2fs_lock_op -- read_lock - dquot_transfer - __dquot_transfer - dquot_acquire - commit_dqblk - f2fs_quota_write - f2fs_write_begin - f2fs_write_failed - write_checkpoint - block_operations - f2fs_lock_all -- write_lock - f2fs_truncate_blocks - f2fs_lock_op -- read_lock But it breaks the sematics of cp_rwsem, in other callers like: - f2fs_file_write_iter -> f2fs_write_begin -> f2fs_write_failed - f2fs_direct_IO -> f2fs_write_failed We allow to truncate dnode w/o cp_rwsem held, result in incorrect sit bitmap update, which can cause further data corruption. So this patch reverts previous fix implementation, and try to fix deadlock by skipping calling f2fs_truncate_blocks() in f2fs_write_failed() only for quota file, and keep the preallocated data/node in the tail of quota file, we can expecte that the preallocated space can be used to store quota info latter soon. Fixes: af033b2a ("f2fs: guarantee journalled quota data by checkpoint") Signed-off-by:Sheng Yong <shengyong1@huawei.com> Signed-off-by:
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Chengguang Xu authored
When sb->s_root is NULL dput() will do nothing, so jump to label 'free_node_inode' instead of lable 'free_root_inode' when failing from d_make_root(). Signed-off-by:
Chengguang Xu <cgxu519@gmx.com> Reviewed-by:
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Chao Yu authored
We missed to add document for inline_xattr_size mount option in f2fs.txt, add it. Signed-off-by:
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zhengliang authored
v4: Rearrange the previous three versions. The following scenario could lead to data block override by mistake. TASK A | TASK kworker | TASK B | TASK C | | | open | | | write | | | close | | | | f2fs_write_data_pages | | | f2fs_write_cache_pages | | | f2fs_outplace_write_data | | | f2fs_allocate_data_block (get block in seg S, | | | S is full, and only | | | have this valid data | | | block) | | | allocate_segment | | | locate_dirty_segment (mark S as PRE) | | | f2fs_submit_page_write (submit but is not | | | written on dev) | | unlink | | | iput_final | | | f2fs_drop_inode | | | f2fs_truncate | | | (not evict) | | | | | write_checkpoint | | | flush merged bio but not wait file data writeback | | | set_prefree_as_free (mark S as FREE) | | | | update NODE/DATA | | | allocate_segment (select S) | writeback done | | So we need to guarantee io complete before truncate inode in f2fs_drop_inode. Reviewed-by:Zheng Liang <zhengliang6@huawei.com> Signed-off-by:
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- 16 Feb, 2019 8 commits
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Geliang Tang authored
lengh -> length Signed-off-by:
Geliang Tang <geliangtang@gmail.com> Reviewed-by:
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Gao Xiang authored
Let's use xattr_prefix instead of open code. No logic changes. Signed-off-by:
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Jaegeuk Kim authored
Some works after roll-forward recovery can get an error which will release all the data structures. Let's flush them in order to make it clean. One possible corruption came from: [ 90.400500] list_del corruption. prev->next should be ffffffed1f566208, but was (null) [ 90.675349] Call trace: [ 90.677869] __list_del_entry_valid+0x94/0xb4 [ 90.682351] remove_dirty_inode+0xac/0x114 [ 90.686563] __f2fs_write_data_pages+0x6a8/0x6c8 [ 90.691302] f2fs_write_data_pages+0x40/0x4c [ 90.695695] do_writepages+0x80/0xf0 [ 90.699372] __writeback_single_inode+0xdc/0x4ac [ 90.704113] writeback_sb_inodes+0x280/0x440 [ 90.708501] wb_writeback+0x1b8/0x3d0 [ 90.712267] wb_workfn+0x1a8/0x4d4 [ 90.715765] process_one_work+0x1c0/0x3d4 [ 90.719883] worker_thread+0x224/0x344 [ 90.723739] kthread+0x120/0x130 [ 90.727055] ret_from_fork+0x10/0x18 Reported-by:
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Jaegeuk Kim authored
After quota_off, we'll get some dirty blocks. If put_super don't have a chance to flush them by checkpoint, it causes NULL pointer exception in end_io after iput(node_inode). (e.g., by checkpoint=disable) Reviewed-by:
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Jaegeuk Kim authored
If dcc_info is not set yet, we can get null pointer panic. Reviewed-by:
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Jaegeuk Kim authored
Otherwise, it wakes up discard thread which will sleep again by busy IOs in a loop. Reviewed-by:
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Jaegeuk Kim authored
If every discard were issued successfully, we can avoid further discard. Reviewed-by:
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Jaegeuk Kim authored
This mode returns mount() quickly with EAGAIN. We can trigger this by shutdown(F2FS_GOING_DOWN_NEED_FSCK). Reviewed-by:
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- 04 Feb, 2019 1 commit
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Jaegeuk Kim authored
When we umount f2fs, we need to avoid long delay due to discard commands, which is actually taking tens of seconds, if storage is very slow on UNMAP. So, this patch introduces timeout-based work on it. By default, let me give 5 seconds for discard. Reviewed-by:
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- 22 Jan, 2019 6 commits
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Chao Yu authored
In order to record direct IO count, we add two additional type in enum count_type: F2FS_DIO_{WRITE,READ}, but those IO won't dirty filesystem metadata, so we don't need to set filesystem dirty in inc_page_count(), fix it. Fixes: 02b16d0a ("f2fs: add to account direct IO") Signed-off-by: -
Chao Yu authored
As Dan Carpenter as below: The patch df634f444ee9: "f2fs: use rb_*_cached friends" from Oct 4, 2018, leads to the following static checker warning: fs/f2fs/extent_cache.c:606 f2fs_update_extent_tree_range() error: uninitialized symbol 'leftmost'. And also Eric Biggers, and Kyungtae Kim reported, there is an UBSAN warning described as below: We report a bug in linux-4.20.2: "UBSAN: Undefined behaviour in fs/f2fs/extent_cache.c" kernel config: https://kt0755.github.io/etc/config_v4.20_stable repro: https://kt0755.github.io/etc/repro.4a3e7.c (f2fs is mounted on /mnt/f2fs/) This arose in f2fs_update_extent_tree_range (fs/f2fs/extent_cache.c:605). It seems that, for some reason, its last argument became "24" although that was supposed to be bool type. ========================================= UBSAN: Undefined behaviour in fs/f2fs/extent_cache.c:605:4 load of value 24 is not a valid value for type '_Bool' CPU: 0 PID: 6774 Comm: syz-executor5 Not tainted 4.20.2 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xb1/0x118 lib/dump_stack.c:113 ubsan_epilogue+0x12/0x94 lib/ubsan.c:159 __ubsan_handle_load_invalid_value+0x17a/0x1be lib/ubsan.c:457 f2fs_update_extent_tree_range+0x1d4a/0x1d50 fs/f2fs/extent_cache.c:605 f2fs_update_extent_cache+0x2b6/0x350 fs/f2fs/extent_cache.c:804 f2fs_update_data_blkaddr+0x61/0x70 fs/f2fs/data.c:656 f2fs_outplace_write_data+0x1d6/0x4b0 fs/f2fs/segment.c:3140 f2fs_convert_inline_page+0x86d/0x2060 fs/f2fs/inline.c:163 f2fs_convert_inline_inode+0x6b5/0xad0 fs/f2fs/inline.c:208 f2fs_preallocate_blocks+0x78b/0xb00 fs/f2fs/data.c:982 f2fs_file_write_iter+0x31b/0xf40 fs/f2fs/file.c:3062 call_write_iter include/linux/fs.h:1857 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x538/0x6e0 fs/read_write.c:487 vfs_write+0x1b3/0x520 fs/read_write.c:549 ksys_write+0xde/0x1c0 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x7e/0xc0 fs/read_write.c:607 do_syscall_64+0xbe/0x4f0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4497b9 Code: e8 8c 9f 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 9b 6b fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f1ea15edc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1ea15ee6cc RCX: 00000000004497b9 RDX: 0000000000001000 RSI: 0000000020000140 RDI: 0000000000000013 RBP: 000000000071bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000bb50 R14: 00000000006f4bf0 R15: 00007f1ea15ee700 ========================================= As I checked, this uninitialized variable won't cause extent cache corruption, but in order to avoid such kind of warning of both UBSAN and smatch, fix to initialize related variable. Reported-by:
Eric Biggers <ebiggers@google.com> Reported-by:
Kyungtae Kim <kt0755@gmail.com> Signed-off-by:
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Sheng Yong authored
When setting /sys/fs/f2fs/<DEV>/iostat_enable with non-bool value, UBSAN reports the following warning. [ 7562.295484] ================================================================================ [ 7562.296531] UBSAN: Undefined behaviour in fs/f2fs/f2fs.h:2776:10 [ 7562.297651] load of value 64 is not a valid value for type '_Bool' [ 7562.298642] CPU: 1 PID: 7487 Comm: dd Not tainted 4.20.0-rc4+ #79 [ 7562.298653] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 [ 7562.298662] Call Trace: [ 7562.298760] dump_stack+0x46/0x5b [ 7562.298811] ubsan_epilogue+0x9/0x40 [ 7562.298830] __ubsan_handle_load_invalid_value+0x72/0x90 [ 7562.298863] f2fs_file_write_iter+0x29f/0x3f0 [ 7562.298905] __vfs_write+0x115/0x160 [ 7562.298922] vfs_write+0xa7/0x190 [ 7562.298934] ksys_write+0x50/0xc0 [ 7562.298973] do_syscall_64+0x4a/0xe0 [ 7562.298992] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 7562.299001] RIP: 0033:0x7fa45ec19c00 [ 7562.299004] Code: 73 01 c3 48 8b 0d 88 92 2c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d dd eb 2c 00 00 75 10 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ce 8f 01 00 48 89 04 24 [ 7562.299044] RSP: 002b:00007ffca52b49e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 7562.299052] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa45ec19c00 [ 7562.299059] RDX: 0000000000000400 RSI: 000000000093f000 RDI: 0000000000000001 [ 7562.299065] RBP: 000000000093f000 R08: 0000000000000004 R09: 0000000000000000 [ 7562.299071] R10: 00007ffca52b47b0 R11: 0000000000000246 R12: 0000000000000400 [ 7562.299077] R13: 000000000093f000 R14: 000000000093f400 R15: 0000000000000000 [ 7562.299091] ================================================================================ So, if iostat_enable is enabled, set its value as true. Signed-off-by:
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Sheng Yong authored
Signed-off-by:
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Sheng Yong authored
Dentry bitmap is not enough to detect incorrect dentries. So this patch also checks the namelen value of a dentry. Signed-off-by:
Gong Chen <gongchen4@huawei.com> Signed-off-by:
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Chao Yu authored
While traversing dirents in f2fs_fill_dentries(), if bitmap is valid, filename length should not be zero, otherwise, directory structure consistency could be corrupted, in this case, let's print related info and set SBI_NEED_FSCK to trigger fsck for repairing. Signed-off-by:
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- 09 Jan, 2019 3 commits
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Greg Kroah-Hartman authored
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Jaegeuk Kim <jaegeuk@kernel.org> Cc: Chao Yu <yuchao0@huawei.com> Cc: linux-f2fs-devel@lists.sourceforge.net Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by:
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Jaegeuk Kim authored
This exports pin_file status to user. Reviewed-by:
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Chao Yu authored
Type of inject_rate is unsigned int, let's check new value's validity during configuring. Signed-off-by:
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- 08 Jan, 2019 5 commits
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YueHaibing authored
Fixes gcc '-Wunused-but-set-variable' warning: fs/f2fs/data.c: In function 'f2fs_dio_submit_bio': fs/f2fs/data.c:2585:6: warning: variable 'err' set but not used [-Wunused-but-set-variable] Signed-off-by:
YueHaibing <yuehaibing@huawei.com> Reviewed-by:
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Zhikang Zhang authored
We meet these compile warnings below, which caused by missing declare structs: struct f2fs_io_info, struct extent, struct f2fs_sb_info. warning: 'struct f2fs_io_info' declared inside parameter list warning: 'struct extent_info' declared inside parameter list warning: 'struct f2fs_sb_info' declared inside parameter list Signed-off-by:
Zhikang Zhang <zhangzhikang1@huawei.com> Reviewed-by:
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Chengguang Xu authored
The error case of failing allocating memory should return -ENOMEM. Signed-off-by:
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Jaegeuk Kim authored
This fixes wrong access of address spaces of node and meta inodes after iput. Fixes: 60aa4d55 ("f2fs: fix use-after-free issue when accessing sbi->stat_info") Reviewed-by:
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Jaegeuk Kim authored
Otherwise, we can get wrong counts incurring checkpoint hang. IO_W (CP: -24, Data: 24, Flush: ( 0 0 1), Discard: ( 0 0)) Thread A Thread B - f2fs_write_data_pages - __write_data_page - f2fs_submit_page_write - inc_page_count(F2FS_WB_DATA) type is F2FS_WB_DATA due to file is non-atomic one - f2fs_ioc_start_atomic_write - set_inode_flag(FI_ATOMIC_FILE) - f2fs_write_end_io - dec_page_count(F2FS_WB_CP_DATA) type is F2FS_WB_DATA due to file becomes atomic one Cc: <stable@vger.kernel.org> Reviewed-by:
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