f2fs: add gc_boost_gc_multiple sysfs node

Add a sysfs knob to set a multiplier for the background GC migration
window when F2FS Garbage Collection is boosted.

Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: fix to trigger foreground gc during f2fs_map_blocks() in lfs mode

w/ "mode=lfs" mount option, generic/299 will cause system panic as below:

------------[ cut here ]------------
kernel BUG at fs/f2fs/segment.c:2835!
Call Trace:
 <TASK>
 f2fs_allocate_data_block+0x6f4/0xc50
 f2fs_map_blocks+0x970/0x1550
 f2fs_iomap_begin+0xb2/0x1e0
 iomap_iter+0x1d6/0x430
 __iomap_dio_rw+0x208/0x9a0
 f2fs_file_write_iter+0x6b3/0xfa0
 aio_write+0x15d/0x2e0
 io_submit_one+0x55e/0xab0
 __x64_sys_io_submit+0xa5/0x230
 do_syscall_64+0x84/0x2f0
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0010:new_curseg+0x70f/0x720

The root cause of we run out-of-space is: in f2fs_map_blocks(), f2fs may
trigger foreground gc only if it allocates any physical block, it will be
a little bit later when there is multiple threads writing data w/
aio/dio/bufio method in parallel, since we always use OPU in lfs mode, so
f2fs_map_blocks() does block allocations aggressively.

In order to fix this issue, let's give a chance to trigger foreground
gc in prior to block allocation in f2fs_map_blocks().

Fixes: 36abef4e796d ("f2fs: introduce mode=lfs mount option")
Cc: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: fix to calculate dirty data during has_not_enough_free_secs()

In lfs mode, dirty data needs OPU, we'd better calculate lower_p and
upper_p w/ them during has_not_enough_free_secs(), otherwise we may
encounter out-of-space issue due to we missed to reclaim enough
free section w/ foreground gc.

Fixes: 36abef4e796d ("f2fs: introduce mode=lfs mount option")
Cc: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: fix to update upper_p in __get_secs_required() correctly

Commit 1acd73edbbfe ("f2fs: fix to account dirty data in __get_secs_required()")
missed to calculate upper_p w/ data_secs, fix it.

Fixes: 1acd73edbbfe ("f2fs: fix to account dirty data in __get_secs_required()")
Cc: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: directly add newly allocated pre-dirty nat entry to dirty set list

When we need to alloc nat entry and set it dirty, we can directly add it to
dirty set list(or initialize its list_head for new_ne) instead of adding it
to clean list and make a move. Introduce init_dirty flag to do it.

Signed-off-by: wangzijie <wangzijie1@honor.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: avoid redundant clean nat entry move in lru list

__lookup_nat_cache follows LRU manner to move clean nat entry, when nat
entries are going to be dirty, no need to move them to tail of lru list.
Introduce a parameter 'for_dirty' to avoid it.

Signed-off-by: wangzijie <wangzijie1@honor.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: zone: wait for inflight dio completion, excluding pinned files read using dio

read for the pinfile using Direct I/O do not wait for dio write.

Signed-off-by: yohan.joung <yohan.joung@sk.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: ignore valid ratio when free section count is low

Otherwise F2FS will not do GC in background in low free section.

Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: don't break allocation when crossing contiguous sections

Commit 0638a3197c19 ("f2fs: avoid unused block when dio write in LFS
mode") has fixed unused block issue for dio write in lfs mode.

However, f2fs_map_blocks() may break and return smaller extent when
last allocated block locates in the end of section, even allocator
can allocate contiguous blocks across sections.

Actually, for the case that allocator returns a block address which is
not contiguous w/ current extent, we can record the block address in
iomap->private, in the next round, skip reallocating for the last
allocated block, then we can fix unused block issue, meanwhile, also,
we can allocates contiguous physical blocks as much as possible for dio
write in lfs mode.

Testcase:
- mkfs.f2fs -f /dev/vdb
- mount -o mode=lfs /dev/vdb /mnt/f2fs
- dd if=/dev/zero of=/mnt/f2fs/file bs=1M count=3; sync;
- dd if=/dev/zero of=/mnt/f2fs/dio bs=2M count=1 oflag=direct;
- umount /mnt/f2fs

Before:
f2fs_map_blocks: dev = (253,16), ino = 4, file offset = 0, start blkaddr = 0x0, len = 0x100, flags = 1, seg_type = 8, may_create = 1, multidevice = 0, flag = 5, err = 0
f2fs_map_blocks: dev = (253,16), ino = 4, file offset = 256, start blkaddr = 0x0, len = 0x100, flags = 1, seg_type = 8, may_create = 1, multidevice = 0, flag = 5, err = 0
f2fs_map_blocks: dev = (253,16), ino = 4, file offset = 512, start blkaddr = 0x0, len = 0x100, flags = 1, seg_type = 8, may_create = 1, multidevice = 0, flag = 5, err = 0
f2fs_map_blocks: dev = (253,16), ino = 5, file offset = 0, start blkaddr = 0x4700, len = 0x100, flags = 3, seg_type = 1, may_create = 1, multidevice = 0, flag = 3, err = 0
f2fs_map_blocks: dev = (253,16), ino = 5, file offset = 256, start blkaddr = 0x4800, len = 0x100, flags = 3, seg_type = 1, may_create = 1, multidevice = 0, flag = 3, err = 0

After:
f2fs_map_blocks: dev = (253,16), ino = 4, file offset = 0, start blkaddr = 0x0, len = 0x100, flags = 1, seg_type = 8, may_create = 1, multidevice = 0, flag = 5, err = 0
f2fs_map_blocks: dev = (253,16), ino = 4, file offset = 256, start blkaddr = 0x0, len = 0x100, flags = 1, seg_type = 8, may_create = 1, multidevice = 0, flag = 5, err = 0
f2fs_map_blocks: dev = (253,16), ino = 4, file offset = 512, start blkaddr = 0x0, len = 0x100, flags = 1, seg_type = 8, may_create = 1, multidevice = 0, flag = 5, err = 0
f2fs_map_blocks: dev = (253,16), ino = 5, file offset = 0, start blkaddr = 0x4700, len = 0x200, flags = 3, seg_type = 1, may_create = 1, multidevice = 0, flag = 3, err = 0

Cc: Daejun Park <daejun7.park@samsung.com>
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: remove unnecessary tracepoint enabled check

There is no extra work before trace_f2fs_[dataread|datawrite]_end(),
so there is no need to check trace_<tracepoint>_enabled().

Signed-off-by: Sheng Yong <shengyong1@xiaomi.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: merge the two conditions to avoid code duplication

No functional changes.

Signed-off-by: mason.zhang <masonzhang.linuxer@gmail.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: vm_unmap_ram() may be called from an invalid context

When testing F2FS with xfstests using UFS backed virtual disks the
kernel complains sometimes that f2fs_release_decomp_mem() calls
vm_unmap_ram() from an invalid context. Example trace from
f2fs/007 test:

f2fs/007 5s ...  [12:59:38][    8.902525] run fstests f2fs/007
[   11.468026] BUG: sleeping function called from invalid context at mm/vmalloc.c:2978
[   11.471849] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 68, name: irq/22-ufshcd
[   11.475357] preempt_count: 1, expected: 0
[   11.476970] RCU nest depth: 0, expected: 0
[   11.478531] CPU: 0 UID: 0 PID: 68 Comm: irq/22-ufshcd Tainted: G        W           6.16.0-rc5-xfstests-ufs-g40f92e79b0aa #9 PREEMPT(none)
[   11.478535] Tainted: [W]=WARN
[   11.478536] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[   11.478537] Call Trace:
[   11.478543]  <TASK>
[   11.478545]  dump_stack_lvl+0x4e/0x70
[   11.478554]  __might_resched.cold+0xaf/0xbe
[   11.478557]  vm_unmap_ram+0x21/0xb0
[   11.478560]  f2fs_release_decomp_mem+0x59/0x80
[   11.478563]  f2fs_free_dic+0x18/0x1a0
[   11.478565]  f2fs_finish_read_bio+0xd7/0x290
[   11.478570]  blk_update_request+0xec/0x3b0
[   11.478574]  ? sbitmap_queue_clear+0x3b/0x60
[   11.478576]  scsi_end_request+0x27/0x1a0
[   11.478582]  scsi_io_completion+0x40/0x300
[   11.478583]  ufshcd_mcq_poll_cqe_lock+0xa3/0xe0
[   11.478588]  ufshcd_sl_intr+0x194/0x1f0
[   11.478592]  ufshcd_threaded_intr+0x68/0xb0
[   11.478594]  ? __pfx_irq_thread_fn+0x10/0x10
[   11.478599]  irq_thread_fn+0x20/0x60
[   11.478602]  ? __pfx_irq_thread_fn+0x10/0x10
[   11.478603]  irq_thread+0xb9/0x180
[   11.478605]  ? __pfx_irq_thread_dtor+0x10/0x10
[   11.478607]  ? __pfx_irq_thread+0x10/0x10
[   11.478609]  kthread+0x10a/0x230
[   11.478614]  ? __pfx_kthread+0x10/0x10
[   11.478615]  ret_from_fork+0x7e/0xd0
[   11.478619]  ? __pfx_kthread+0x10/0x10
[   11.478621]  ret_from_fork_asm+0x1a/0x30
[   11.478623]  </TASK>

This patch modifies in_task() check inside f2fs_read_end_io() to also
check if interrupts are disabled. This ensures that pages are unmapped
asynchronously in an interrupt handler.

Fixes: bff139b49d9f ("f2fs: handle decompress only post processing in softirq")
Signed-off-by: Jan Prusakowski <jprusakowski@google.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: fix to avoid out-of-boundary access in dnode page

As Jiaming Zhang reported:

 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x1c1/0x2a0 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0x17e/0x800 mm/kasan/report.c:480
 kasan_report+0x147/0x180 mm/kasan/report.c:593
 data_blkaddr fs/f2fs/f2fs.h:3053 [inline]
 f2fs_data_blkaddr fs/f2fs/f2fs.h:3058 [inline]
 f2fs_get_dnode_of_data+0x1a09/0x1c40 fs/f2fs/node.c:855
 f2fs_reserve_block+0x53/0x310 fs/f2fs/data.c:1195
 prepare_write_begin fs/f2fs/data.c:3395 [inline]
 f2fs_write_begin+0xf39/0x2190 fs/f2fs/data.c:3594
 generic_perform_write+0x2c7/0x910 mm/filemap.c:4112
 f2fs_buffered_write_iter fs/f2fs/file.c:4988 [inline]
 f2fs_file_write_iter+0x1ec8/0x2410 fs/f2fs/file.c:5216
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x546/0xa90 fs/read_write.c:686
 ksys_write+0x149/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x3d0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The root cause is in the corrupted image, there is a dnode has the same
node id w/ its inode, so during f2fs_get_dnode_of_data(), it tries to
access block address in dnode at offset 934, however it parses the dnode
as inode node, so that get_dnode_addr() returns 360, then it tries to
access page address from 360 + 934 * 4 = 4096 w/ 4 bytes.

To fix this issue, let's add sanity check for node id of all direct nodes
during f2fs_get_dnode_of_data().

Cc: stable@kernel.org
Reported-by: Jiaming Zhang <r772577952@gmail.com>
Closes: https://groups.google.com/g/syzkaller/c/-ZnaaOOfO3M
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: switch to the new mount api

The new mount api will execute .parse_param, .init_fs_context, .get_tree
and will call .remount if remount happened. So we add the necessary
functions for the fs_context_operations. If .init_fs_context is added,
the old .mount should remove.

See Documentation/filesystems/mount_api.rst for more information.

Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
[sandeen: forward port]
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
[hongbo: context modified]
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: introduce fs_context_operation structure

The handle_mount_opt() helper is used to parse mount parameters,
and so we can rename this function to f2fs_parse_param() and set
it as .param_param in fs_context_operations.

Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
[sandeen: forward port]
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: separate the options parsing and options checking

The new mount api separates option parsing and super block setup
into two distinct steps and so we need to separate the options
parsing out of the parse_options().

In order to achieve this, here we handle the mount options with
three steps:
  - Firstly, we move sb/sbi out of handle_mount_opt.
    As the former patch introduced f2fs_fs_context, so we record
    the changed mount options in this context. In handle_mount_opt,
    sb/sbi is null, so we should move all relative code out of
    handle_mount_opt (thus, some check case which use sb/sbi should
    move out).
  - Secondly, we introduce the some check helpers to keep the option
    consistent.
    During filling superblock period, sb/sbi are ready. So we check
    the f2fs_fs_context which holds the mount options base on sb/sbi.
  - Thirdly, we apply the new mount options to sb/sbi.
    After checking the f2fs_fs_context, all changed on mount options
    are valid. So we can apply them to sb/sbi directly.

After do these, option parsing and super block setting have been
decoupled. Also it should have retained the original execution
flow.

Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
[sandeen: forward port, minor fixes and updates]
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
[hongbo: minor fixes]
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Add f2fs_fs_context to record the mount options

At the parsing phase of mouont in the new mount api, options
value will be recorded with the context, and then it will be
used in fill_super and other helpers.

Note that, this is a temporary status, we want remove the sb
and sbi usages in handle_mount_opt. So here the f2fs_fs_context
only records the mount options, it will be copied in sb/sbi in
later process. (At this point in the series, mount options are
temporarily not set during mount.)

Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
[sandeen: forward port, minor fixes and updates]
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
[hongbo: minor cleanup]
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Allow sbi to be NULL in f2fs_printk

At the parsing phase of the new mount api, sbi will not be
available. So here allows sbi to be NULL in f2fs log helpers
and use that in handle_mount_opt().

Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
[sandeen: forward port]
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: move the option parser into handle_mount_opt

In handle_mount_opt, we use fs_parameter to parse each option.
However we're still using the old API to get the options string.
Using fsparams parse_options allows us to remove many of the Opt_
enums, so remove them.

The checkpoint disable cap (or percent) involves rather complex
parsing; we retain the old match_table mechanism for this, which
handles it well.

There are some changes about parsing options:
  1. For `active_logs`, `inline_xattr_size` and `fault_injection`,
     we use s32 type according the internal structure to record the
     option's value.

Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
[sandeen: forward port, minor fixes and updates]
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
[hongbo: minor cleanup]
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Add fs parameter specifications for mount options

Use an array of `fs_parameter_spec` called f2fs_param_specs to
hold the mount option specifications for the new mount api.

Add constant_table structures for several options to facilitate
parsing.

Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
[sandeen: forward port, minor fixes and updates, more fsparam_enum]
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: fix to avoid out-of-boundary access in devs.path

- touch /mnt/f2fs/012345678901234567890123456789012345678901234567890123
- truncate -s $((1024*1024*1024)) \
  /mnt/f2fs/012345678901234567890123456789012345678901234567890123
- touch /mnt/f2fs/file
- truncate -s $((1024*1024*1024)) /mnt/f2fs/file
- mkfs.f2fs /mnt/f2fs/012345678901234567890123456789012345678901234567890123 \
  -c /mnt/f2fs/file
- mount /mnt/f2fs/012345678901234567890123456789012345678901234567890123 \
  /mnt/f2fs/loop

[16937.192225] F2FS-fs (loop0): Mount Device [ 0]: /mnt/f2fs/012345678901234567890123456789012345678901234567890123\xff\x01,      511,        0 -    3ffff
[16937.192268] F2FS-fs (loop0): Failed to find devices

If device path length equals to MAX_PATH_LEN, sbi->devs.path[] may
not end up w/ null character due to path array is fully filled, So
accidently, fields locate after path[] may be treated as part of
device path, result in parsing wrong device path.

struct f2fs_dev_info {
...
char path[MAX_PATH_LEN];
...
};

Let's add one byte space for sbi->devs.path[] to store null
character of device path string.

Fixes: 3c62be17d4f5 ("f2fs: support multiple devices")
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Remove F2FS_P_SB()

All callers have been converted to F2FS_F_SB() so delete this wrapper.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to __has_merged_page()

All three callers have a folio so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to f2fs_submit_merged_write_cond()

Most callers pass NULL, and the one that passes a page already has a
folio.  Also convert __submit_merged_write_cond() to take a folio.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Remove use of page from f2fs_write_single_data_page()

Both remaining uses of page now have a folio equivalent.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Remove clear_page_private_all()

All callers can simply call folio_detach_private().  This was the
only way that clear_page_private_data() could be called, so remove
that too.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Use F2FS_F_SB() in f2fs_read_end_io()

Get the folio from the bio instead of the page.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Use a folio in f2fs_encrypted_get_link()

Use a folio instead of a page when dealing with the page cache.  Removes
a hidden call to compound_head().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to f2fs_cache_compressed_page()

The only caller already has a folio so pass it in.
f2fs_cache_compressed_page() is not used outside compress.c so
make it static.  This requires a forward declaration (or would require
rearranging this file, but I've chosen not to do that for readability of
the diff).

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to F2FS_NODE()

All callers now have a folio so pass it in

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass the nat_blk to __update_nat_bits()

The page argument is only used to look up the address of the nat_blk.
Since the caller already has it, pass it in instead.  Also mark it const
as the nat_blk isn't modified by this function.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Convert get_next_nat_page() to get_next_nat_folio()

Return a folio from this function and convert its one caller.
Removes a call to compound_head().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to f2fs_is_compressed_page()

All callers now have a folio so pass it in.  Also remove the test for
the private flag; it is redundant with checking folio->private for being
NULL.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Use a folio iterator in f2fs_verify_bio()

Change from bio_for_each_segment_all() to bio_for_each_folio_all()
to iterate over each folio instead of each page.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to f2fs_end_read_compressed_page()

Both callers now have a folio so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Use a folio iterator in f2fs_handle_step_decompress()

Change from bio_for_each_segment_all() to bio_for_each_folio_all()
to iterate over each folio instead of each page.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to WB_DATA_TYPE() and f2fs_is_cp_guaranteed()

All callers now have a folio so pass it in.  Removes a call to
compound_head().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Use a bio in f2fs_submit_page_write()

Convert bio_page to bio_folio and use it throughout.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Use a folio in f2fs_merge_page_bio()

We have two folios to deal with here; one carries the metadata and the
other points to the data.  They may be the same, but if it's compressed,
the data_folio will differ from the metadata folio.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to f2fs_compress_write_end_io()

The only caller has a folio so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Convert get_page_private_data() to folio_get_f2fs_data()

The only caller already has a folio so convert this function to be folio
based.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Convert set_page_private_data() to folio_set_f2fs_data()

The only caller has a folio, so pass it in and operate on it.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Use a folio in f2fs_is_cp_guaranteed()

Convert the passed page to a folio and use it throughout.  Removes
a use of fscrypt_is_bounce_page(), which we're trying to remove.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Add folio counterparts to page_private_flags functions

Name these new functions folio_test_f2fs_*(), folio_set_f2fs_*() and
folio_clear_f2fs_*().  Convert all callers which currently have a folio
and cast back to a page.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to IS_INODE()

All callers now have a folio so pass it in.  Also make it const to help
the compiler.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to ADDRS_PER_PAGE()

All callers now have a folio so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to get_dnode_base()

The only caller already has a folio so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to ofs_of_node()

All callers now have a folio so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to IS_DNODE()

All callers now have a folio so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to is_node()

All three callers now have a folio so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to is_cold_node()

All callers now have a folio so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Use folio_unlock() in f2fs_write_compressed_pages()

Remove a call to compound_head() by replacing a call to unlock_page()
with a call to folio_unlock().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Add fio->folio

Put fio->page insto a union with fio->folio.  This lets us remove a
lot of folio->page and page->folio conversions.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to is_dent_dnode()

Both callers have a folio so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to is_fsync_dnode()

Both callers have a folio so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to f2fs_recover_xattr_data()

One caller passes NULL and the other caller already has a folio so
pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to cpver_of_node()

All callers have a folio so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to fill_node_footer()

All callers have a folio so pass it in.  Also mark it as const to help
the compiler.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass folios to copy_node_footer()

The only caller has folios so pass them in.  Also mark them as const to help
the compiler.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to set_cold_node()

All callers have a folio so pass it in.  Also mark it as const to help
the compiler.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to get_nid()

All callers have a folio so pass it in.  Also mark it as const to help
the compiler.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to fill_node_footer_blkaddr()

The only caller has a folio so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to f2fs_inode_chksum()

Both callers have a folio so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to f2fs_enable_inode_chksum()

All callers have a folio so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to f2fs_inode_chksum_set()

All callers have a folio so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to f2fs_allocate_data_block()

Most callers pass NULL, and the one which passes a page already has a
folio, so we can pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to set_mark()

All callers have a folio so pass it in.  Removes a call to
compound_head().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to set_fsync_mark()

All callers have a folio so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to set_dentry_mark()

All callers have a folio so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to is_recoverable_dnode()

All callers have a folio so pass it in.  Also make the argument const
as the function does not modify it.  Removes a call to compound_head().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to nid_of_node()

All callers have a folio so pass it in.  Also make the argument const
as the function does not modify it.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to ino_of_node()

All callers have a folio so pass it in.  Also make the argument const
as the function does not modify it.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to F2FS_INODE()

All callers now have a folio, so pass it in.  Also make it const as
F2FS_INODE() does not modify the struct folio passed in (the data it
describes is mutable, but it does not change the contents of the struct).
This may improve code generation.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to inode_has_blocks()

The only caller has a folio, so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to f2fs_sanity_check_inline_data()

The only caller has a folio, so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to sanity_check_inode()

The only caller has a folio, so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to sanity_check_extent_cache()

The only caller has a folio, so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to f2fs_recover_inode_page()

The only caller has a folio, so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to recover_quota_data()

The only caller has a folio, so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to recover_inode()

The only caller has a folio, so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Pass a folio to recover_dentry()

The only caller has a folio, so pass it in.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: introduce is_cur{seg,sec}()

There are redundant codes in IS_CUR{SEG,SEC}() macros, let's introduce
inline is_cur{seg,sec}() functions, and use a loop in it for cleanup.

Meanwhile, it enhances expansibility, as it doesn't need to change
is_cur{seg,sec}() when we add a new log header.

Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: fix to avoid panic in f2fs_evict_inode

As syzbot [1] reported as below:

R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffe17473450
R13: 00007f28b1c10854 R14: 000000000000dae5 R15: 00007ffe17474520
 </TASK>
---[ end trace 0000000000000000 ]---
==================================================================
BUG: KASAN: use-after-free in __list_del_entry_valid+0xa6/0x130 lib/list_debug.c:62
Read of size 8 at addr ffff88812d962278 by task syz-executor/564

CPU: 1 PID: 564 Comm: syz-executor Tainted: G        W          6.1.129-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0xee/0x158 lib/dump_stack.c:106
 print_address_description+0x71/0x210 mm/kasan/report.c:316
 print_report+0x4a/0x60 mm/kasan/report.c:427
 kasan_report+0x122/0x150 mm/kasan/report.c:531
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:351
 __list_del_entry_valid+0xa6/0x130 lib/list_debug.c:62
 __list_del_entry include/linux/list.h:134 [inline]
 list_del_init include/linux/list.h:206 [inline]
 f2fs_inode_synced+0xf7/0x2e0 fs/f2fs/super.c:1531
 f2fs_update_inode+0x74/0x1c40 fs/f2fs/inode.c:585
 f2fs_update_inode_page+0x137/0x170 fs/f2fs/inode.c:703
 f2fs_write_inode+0x4ec/0x770 fs/f2fs/inode.c:731
 write_inode fs/fs-writeback.c:1460 [inline]
 __writeback_single_inode+0x4a0/0xab0 fs/fs-writeback.c:1677
 writeback_single_inode+0x221/0x8b0 fs/fs-writeback.c:1733
 sync_inode_metadata+0xb6/0x110 fs/fs-writeback.c:2789
 f2fs_sync_inode_meta+0x16d/0x2a0 fs/f2fs/checkpoint.c:1159
 block_operations fs/f2fs/checkpoint.c:1269 [inline]
 f2fs_write_checkpoint+0xca3/0x2100 fs/f2fs/checkpoint.c:1658
 kill_f2fs_super+0x231/0x390 fs/f2fs/super.c:4668
 deactivate_locked_super+0x98/0x100 fs/super.c:332
 deactivate_super+0xaf/0xe0 fs/super.c:363
 cleanup_mnt+0x45f/0x4e0 fs/namespace.c:1186
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1193
 task_work_run+0x1c6/0x230 kernel/task_work.c:203
 exit_task_work include/linux/task_work.h:39 [inline]
 do_exit+0x9fb/0x2410 kernel/exit.c:871
 do_group_exit+0x210/0x2d0 kernel/exit.c:1021
 __do_sys_exit_group kernel/exit.c:1032 [inline]
 __se_sys_exit_group kernel/exit.c:1030 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1030
 x64_sys_call+0x7b4/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f28b1b8e169
Code: Unable to access opcode bytes at 0x7f28b1b8e13f.
RSP: 002b:00007ffe174710a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f28b1c10879 RCX: 00007f28b1b8e169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000002 R08: 00007ffe1746ee47 R09: 00007ffe17472360
R10: 0000000000000009 R11: 0000000000000246 R12: 00007ffe17472360
R13: 00007f28b1c10854 R14: 000000000000dae5 R15: 00007ffe17474520
 </TASK>

Allocated by task 569:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 kasan_save_alloc_info+0x25/0x30 mm/kasan/generic.c:505
 __kasan_slab_alloc+0x72/0x80 mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook+0x4f/0x2c0 mm/slab.h:737
 slab_alloc_node mm/slub.c:3398 [inline]
 slab_alloc mm/slub.c:3406 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3413 [inline]
 kmem_cache_alloc_lru+0x104/0x220 mm/slub.c:3429
 alloc_inode_sb include/linux/fs.h:3245 [inline]
 f2fs_alloc_inode+0x2d/0x340 fs/f2fs/super.c:1419
 alloc_inode fs/inode.c:261 [inline]
 iget_locked+0x186/0x880 fs/inode.c:1373
 f2fs_iget+0x55/0x4c60 fs/f2fs/inode.c:483
 f2fs_lookup+0x366/0xab0 fs/f2fs/namei.c:487
 __lookup_slow+0x2a3/0x3d0 fs/namei.c:1690
 lookup_slow+0x57/0x70 fs/namei.c:1707
 walk_component+0x2e6/0x410 fs/namei.c:1998
 lookup_last fs/namei.c:2455 [inline]
 path_lookupat+0x180/0x490 fs/namei.c:2479
 filename_lookup+0x1f0/0x500 fs/namei.c:2508
 vfs_statx+0x10b/0x660 fs/stat.c:229
 vfs_fstatat fs/stat.c:267 [inline]
 vfs_lstat include/linux/fs.h:3424 [inline]
 __do_sys_newlstat fs/stat.c:423 [inline]
 __se_sys_newlstat+0xd5/0x350 fs/stat.c:417
 __x64_sys_newlstat+0x5b/0x70 fs/stat.c:417
 x64_sys_call+0x393/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:7
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Freed by task 13:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 kasan_save_free_info+0x31/0x50 mm/kasan/generic.c:516
 ____kasan_slab_free+0x132/0x180 mm/kasan/common.c:236
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:244
 kasan_slab_free include/linux/kasan.h:177 [inline]
 slab_free_hook mm/slub.c:1724 [inline]
 slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1750
 slab_free mm/slub.c:3661 [inline]
 kmem_cache_free+0x12d/0x2a0 mm/slub.c:3683
 f2fs_free_inode+0x24/0x30 fs/f2fs/super.c:1562
 i_callback+0x4c/0x70 fs/inode.c:250
 rcu_do_batch+0x503/0xb80 kernel/rcu/tree.c:2297
 rcu_core+0x5a2/0xe70 kernel/rcu/tree.c:2557
 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2574
 handle_softirqs+0x178/0x500 kernel/softirq.c:578
 run_ksoftirqd+0x28/0x30 kernel/softirq.c:945
 smpboot_thread_fn+0x45a/0x8c0 kernel/smpboot.c:164
 kthread+0x270/0x310 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

Last potentially related work creation:
 kasan_save_stack+0x3a/0x60 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xb6/0xc0 mm/kasan/generic.c:486
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
 call_rcu+0xd4/0xf70 kernel/rcu/tree.c:2845
 destroy_inode fs/inode.c:316 [inline]
 evict+0x7da/0x870 fs/inode.c:720
 iput_final fs/inode.c:1834 [inline]
 iput+0x62b/0x830 fs/inode.c:1860
 do_unlinkat+0x356/0x540 fs/namei.c:4397
 __do_sys_unlink fs/namei.c:4438 [inline]
 __se_sys_unlink fs/namei.c:4436 [inline]
 __x64_sys_unlink+0x49/0x50 fs/namei.c:4436
 x64_sys_call+0x958/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:88
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

The buggy address belongs to the object at ffff88812d961f20
 which belongs to the cache f2fs_inode_cache of size 1200
The buggy address is located 856 bytes inside of
 1200-byte region [ffff88812d961f20, ffff88812d9623d0)

The buggy address belongs to the physical page:
page:ffffea0004b65800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12d960
head:ffffea0004b65800 order:2 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 0000000000000000 dead000000000122 ffff88810a94c500
raw: 0000000000000000 00000000800c000c 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Reclaimable, gfp_mask 0x1d2050(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 569, tgid 568 (syz.2.16), ts 55943246141, free_ts 0
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x1d0/0x1f0 mm/page_alloc.c:2532
 prep_new_page mm/page_alloc.c:2539 [inline]
 get_page_from_freelist+0x2e63/0x2ef0 mm/page_alloc.c:4328
 __alloc_pages+0x235/0x4b0 mm/page_alloc.c:5605
 alloc_slab_page include/linux/gfp.h:-1 [inline]
 allocate_slab mm/slub.c:1939 [inline]
 new_slab+0xec/0x4b0 mm/slub.c:1992
 ___slab_alloc+0x6f6/0xb50 mm/slub.c:3180
 __slab_alloc+0x5e/0xa0 mm/slub.c:3279
 slab_alloc_node mm/slub.c:3364 [inline]
 slab_alloc mm/slub.c:3406 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3413 [inline]
 kmem_cache_alloc_lru+0x13f/0x220 mm/slub.c:3429
 alloc_inode_sb include/linux/fs.h:3245 [inline]
 f2fs_alloc_inode+0x2d/0x340 fs/f2fs/super.c:1419
 alloc_inode fs/inode.c:261 [inline]
 iget_locked+0x186/0x880 fs/inode.c:1373
 f2fs_iget+0x55/0x4c60 fs/f2fs/inode.c:483
 f2fs_fill_super+0x3ad7/0x6bb0 fs/f2fs/super.c:4293
 mount_bdev+0x2ae/0x3e0 fs/super.c:1443
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4642
 legacy_get_tree+0xea/0x190 fs/fs_context.c:632
 vfs_get_tree+0x89/0x260 fs/super.c:1573
 do_new_mount+0x25a/0xa20 fs/namespace.c:3056
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88812d962100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88812d962180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88812d962200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                                ^
 ffff88812d962280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88812d962300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

[1] https://syzkaller.appspot.com/x/report.txt?x=13448368580000

This bug can be reproduced w/ the reproducer [2], once we enable
CONFIG_F2FS_CHECK_FS config, the reproducer will trigger panic as below,
so the direct reason of this bug is the same as the one below patch [3]
fixed.

kernel BUG at fs/f2fs/inode.c:857!
RIP: 0010:f2fs_evict_inode+0x1204/0x1a20
Call Trace:
 <TASK>
 evict+0x32a/0x7a0
 do_unlinkat+0x37b/0x5b0
 __x64_sys_unlink+0xad/0x100
 do_syscall_64+0x5a/0xb0
 entry_SYSCALL_64_after_hwframe+0x6e/0xd8
RIP: 0010:f2fs_evict_inode+0x1204/0x1a20

[2] https://syzkaller.appspot.com/x/repro.c?x=17495ccc580000
[3] https://lore.kernel.org/linux-f2fs-devel/20250702120321.1080759-1-chao@kernel.org

Tracepoints before panic:

f2fs_unlink_enter: dev = (7,0), dir ino = 3, i_size = 4096, i_blocks = 8, name = file1
f2fs_unlink_exit: dev = (7,0), ino = 7, ret = 0
f2fs_evict_inode: dev = (7,0), ino = 7, pino = 3, i_mode = 0x81ed, i_size = 10, i_nlink = 0, i_blocks = 0, i_advise = 0x0
f2fs_truncate_node: dev = (7,0), ino = 7, nid = 8, block_address = 0x3c05

f2fs_unlink_enter: dev = (7,0), dir ino = 3, i_size = 4096, i_blocks = 8, name = file3
f2fs_unlink_exit: dev = (7,0), ino = 8, ret = 0
f2fs_evict_inode: dev = (7,0), ino = 8, pino = 3, i_mode = 0x81ed, i_size = 9000, i_nlink = 0, i_blocks = 24, i_advise = 0x4
f2fs_truncate: dev = (7,0), ino = 8, pino = 3, i_mode = 0x81ed, i_size = 0, i_nlink = 0, i_blocks = 24, i_advise = 0x4
f2fs_truncate_blocks_enter: dev = (7,0), ino = 8, i_size = 0, i_blocks = 24, start file offset = 0
f2fs_truncate_blocks_exit: dev = (7,0), ino = 8, ret = -2

The root cause is: in the fuzzed image, dnode #8 belongs to inode #7,
after inode #7 eviction, dnode #8 was dropped.

However there is dirent that has ino #8, so, once we unlink file3, in
f2fs_evict_inode(), both f2fs_truncate() and f2fs_update_inode_page()
will fail due to we can not load node #8, result in we missed to call
f2fs_inode_synced() to clear inode dirty status.

Let's fix this by calling f2fs_inode_synced() in error path of
f2fs_evict_inode().

PS: As I verified, the reproducer [2] can trigger this bug in v6.1.129,
but it failed in v6.16-rc4, this is because the testcase will stop due to
other corruption has been detected by f2fs:

F2FS-fs (loop0): inconsistent node block, node_type:2, nid:8, node_footer[nid:8,ino:8,ofs:0,cpver:5013063228981249506,blkaddr:15366]
F2FS-fs (loop0): f2fs_lookup: inode (ino=9) has zero i_nlink

Fixes: 0f18b462b2e5 ("f2fs: flush inode metadata when checkpoint is doing")
Closes: https://syzkaller.appspot.com/x/report.txt?x=13448368580000
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: fix to avoid UAF in f2fs_sync_inode_meta()

syzbot reported an UAF issue as below: [1] [2]

[1] https://syzkaller.appspot.com/text?tag=CrashReport&x=16594c60580000

==================================================================
BUG: KASAN: use-after-free in __list_del_entry_valid+0xa6/0x130 lib/list_debug.c:62
Read of size 8 at addr ffff888100567dc8 by task kworker/u4:0/8

CPU: 1 PID: 8 Comm: kworker/u4:0 Tainted: G        W          6.1.129-syzkaller-00017-g642656a36791 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: writeback wb_workfn (flush-7:0)
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:316 [inline]
 print_report+0x158/0x4e0 mm/kasan/report.c:427
 kasan_report+0x13c/0x170 mm/kasan/report.c:531
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:351
 __list_del_entry_valid+0xa6/0x130 lib/list_debug.c:62
 __list_del_entry include/linux/list.h:134 [inline]
 list_del_init include/linux/list.h:206 [inline]
 f2fs_inode_synced+0x100/0x2e0 fs/f2fs/super.c:1553
 f2fs_update_inode+0x72/0x1c40 fs/f2fs/inode.c:588
 f2fs_update_inode_page+0x135/0x170 fs/f2fs/inode.c:706
 f2fs_write_inode+0x416/0x790 fs/f2fs/inode.c:734
 write_inode fs/fs-writeback.c:1460 [inline]
 __writeback_single_inode+0x4cf/0xb80 fs/fs-writeback.c:1677
 writeback_sb_inodes+0xb32/0x1910 fs/fs-writeback.c:1903
 __writeback_inodes_wb+0x118/0x3f0 fs/fs-writeback.c:1974
 wb_writeback+0x3da/0xa00 fs/fs-writeback.c:2081
 wb_check_background_flush fs/fs-writeback.c:2151 [inline]
 wb_do_writeback fs/fs-writeback.c:2239 [inline]
 wb_workfn+0xbba/0x1030 fs/fs-writeback.c:2266
 process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299
 worker_thread+0xa60/0x1260 kernel/workqueue.c:2446
 kthread+0x26d/0x300 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>

Allocated by task 298:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
 __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:333
 kasan_slab_alloc include/linux/kasan.h:202 [inline]
 slab_post_alloc_hook+0x53/0x2c0 mm/slab.h:768
 slab_alloc_node mm/slub.c:3421 [inline]
 slab_alloc mm/slub.c:3431 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3438 [inline]
 kmem_cache_alloc_lru+0x102/0x270 mm/slub.c:3454
 alloc_inode_sb include/linux/fs.h:3255 [inline]
 f2fs_alloc_inode+0x2d/0x350 fs/f2fs/super.c:1437
 alloc_inode fs/inode.c:261 [inline]
 iget_locked+0x18c/0x7e0 fs/inode.c:1373
 f2fs_iget+0x55/0x4ca0 fs/f2fs/inode.c:486
 f2fs_lookup+0x3c1/0xb50 fs/f2fs/namei.c:484
 __lookup_slow+0x2b9/0x3e0 fs/namei.c:1689
 lookup_slow+0x5a/0x80 fs/namei.c:1706
 walk_component+0x2e7/0x410 fs/namei.c:1997
 lookup_last fs/namei.c:2454 [inline]
 path_lookupat+0x16d/0x450 fs/namei.c:2478
 filename_lookup+0x251/0x600 fs/namei.c:2507
 vfs_statx+0x107/0x4b0 fs/stat.c:229
 vfs_fstatat fs/stat.c:267 [inline]
 vfs_lstat include/linux/fs.h:3434 [inline]
 __do_sys_newlstat fs/stat.c:423 [inline]
 __se_sys_newlstat+0xda/0x7c0 fs/stat.c:417
 __x64_sys_newlstat+0x5b/0x70 fs/stat.c:417
 x64_sys_call+0x52/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:7
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0x80 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Freed by task 0:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516
 ____kasan_slab_free+0x131/0x180 mm/kasan/common.c:241
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:249
 kasan_slab_free include/linux/kasan.h:178 [inline]
 slab_free_hook mm/slub.c:1745 [inline]
 slab_free_freelist_hook mm/slub.c:1771 [inline]
 slab_free mm/slub.c:3686 [inline]
 kmem_cache_free+0x291/0x560 mm/slub.c:3711
 f2fs_free_inode+0x24/0x30 fs/f2fs/super.c:1584
 i_callback+0x4b/0x70 fs/inode.c:250
 rcu_do_batch+0x552/0xbe0 kernel/rcu/tree.c:2297
 rcu_core+0x502/0xf40 kernel/rcu/tree.c:2557
 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2574
 handle_softirqs+0x1db/0x650 kernel/softirq.c:624
 __do_softirq kernel/softirq.c:662 [inline]
 invoke_softirq kernel/softirq.c:479 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:711
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:723
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1118
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691

Last potentially related work creation:
 kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xb4/0xc0 mm/kasan/generic.c:486
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
 __call_rcu_common kernel/rcu/tree.c:2807 [inline]
 call_rcu+0xdc/0x10f0 kernel/rcu/tree.c:2926
 destroy_inode fs/inode.c:316 [inline]
 evict+0x87d/0x930 fs/inode.c:720
 iput_final fs/inode.c:1834 [inline]
 iput+0x616/0x690 fs/inode.c:1860
 do_unlinkat+0x4e1/0x920 fs/namei.c:4396
 __do_sys_unlink fs/namei.c:4437 [inline]
 __se_sys_unlink fs/namei.c:4435 [inline]
 __x64_sys_unlink+0x49/0x50 fs/namei.c:4435
 x64_sys_call+0x289/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:88
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0x80 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

The buggy address belongs to the object at ffff888100567a10
 which belongs to the cache f2fs_inode_cache of size 1360
The buggy address is located 952 bytes inside of
 1360-byte region [ffff888100567a10, ffff888100567f60)

The buggy address belongs to the physical page:
page:ffffea0004015800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100560
head:ffffea0004015800 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 0000000000000000 dead000000000122 ffff8881002c4d80
raw: 0000000000000000 0000000080160016 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Reclaimable, gfp_mask 0xd2050(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_RECLAIMABLE), pid 298, tgid 298 (syz-executor330), ts 26489303743, free_ts 0
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x213/0x220 mm/page_alloc.c:2637
 prep_new_page+0x1b/0x110 mm/page_alloc.c:2644
 get_page_from_freelist+0x3a98/0x3b10 mm/page_alloc.c:4539
 __alloc_pages+0x234/0x610 mm/page_alloc.c:5837
 alloc_slab_page+0x6c/0xf0 include/linux/gfp.h:-1
 allocate_slab mm/slub.c:1962 [inline]
 new_slab+0x90/0x3e0 mm/slub.c:2015
 ___slab_alloc+0x6f9/0xb80 mm/slub.c:3203
 __slab_alloc+0x5d/0xa0 mm/slub.c:3302
 slab_alloc_node mm/slub.c:3387 [inline]
 slab_alloc mm/slub.c:3431 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3438 [inline]
 kmem_cache_alloc_lru+0x149/0x270 mm/slub.c:3454
 alloc_inode_sb include/linux/fs.h:3255 [inline]
 f2fs_alloc_inode+0x2d/0x350 fs/f2fs/super.c:1437
 alloc_inode fs/inode.c:261 [inline]
 iget_locked+0x18c/0x7e0 fs/inode.c:1373
 f2fs_iget+0x55/0x4ca0 fs/f2fs/inode.c:486
 f2fs_fill_super+0x5360/0x6dc0 fs/f2fs/super.c:4488
 mount_bdev+0x282/0x3b0 fs/super.c:1445
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4743
 legacy_get_tree+0xf1/0x190 fs/fs_context.c:632
page_owner free stack trace missing

Memory state around the buggy address:
 ffff888100567c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888100567d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888100567d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                              ^
 ffff888100567e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888100567e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

[2] https://syzkaller.appspot.com/text?tag=CrashLog&x=13654c60580000

[   24.675720][   T28] audit: type=1400 audit(1745327318.732:72): avc:  denied  { write } for  pid=298 comm="syz-executor399" name="/" dev="loop0" ino=3 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1
[   24.705426][  T296] ------------[ cut here ]------------
[   24.706608][   T28] audit: type=1400 audit(1745327318.732:73): avc:  denied  { remove_name } for  pid=298 comm="syz-executor399" name="file0" dev="loop0" ino=4 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1
[   24.711550][  T296] WARNING: CPU: 0 PID: 296 at fs/f2fs/inode.c:847 f2fs_evict_inode+0x1262/0x1540
[   24.734141][   T28] audit: type=1400 audit(1745327318.732:74): avc:  denied  { rename } for  pid=298 comm="syz-executor399" name="file0" dev="loop0" ino=4 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1
[   24.742969][  T296] Modules linked in:
[   24.765201][   T28] audit: type=1400 audit(1745327318.732:75): avc:  denied  { add_name } for  pid=298 comm="syz-executor399" name="bus" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1
[   24.768847][  T296] CPU: 0 PID: 296 Comm: syz-executor399 Not tainted 6.1.129-syzkaller-00017-g642656a36791 #0
[   24.799506][  T296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[   24.809401][  T296] RIP: 0010:f2fs_evict_inode+0x1262/0x1540
[   24.815018][  T296] Code: 34 70 4a ff eb 0d e8 2d 70 4a ff 4d 89 e5 4c 8b 64 24 18 48 8b 5c 24 28 4c 89 e7 e8 78 38 03 00 e9 84 fc ff ff e8 0e 70 4a ff <0f> 0b 4c 89 f7 be 08 00 00 00 e8 7f 21 92 ff f0 41 80 0e 04 e9 61
[   24.834584][  T296] RSP: 0018:ffffc90000db7a40 EFLAGS: 00010293
[   24.840465][  T296] RAX: ffffffff822aca42 RBX: 0000000000000002 RCX: ffff888110948000
[   24.848291][  T296] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
[   24.856064][  T296] RBP: ffffc90000db7bb0 R08: ffffffff822ac6a8 R09: ffffed10200b005d
[   24.864073][  T296] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888100580000
[   24.871812][  T296] R13: dffffc0000000000 R14: ffff88810fef4078 R15: 1ffff920001b6f5c

The root cause is w/ a fuzzed image, f2fs may missed to clear FI_DIRTY_INODE
flag for target inode, after f2fs_evict_inode(), the inode is still linked in
sbi->inode_list[DIRTY_META] global list, once it triggers checkpoint,
f2fs_sync_inode_meta() may access the released inode.

In f2fs_evict_inode(), let's always call f2fs_inode_synced() to clear
FI_DIRTY_INODE flag and drop inode from global dirty list to avoid this
UAF issue.

Fixes: 0f18b462b2e5 ("f2fs: flush inode metadata when checkpoint is doing")
Closes: https://syzkaller.appspot.com/bug?extid=849174b2efaf0d8be6ba
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: doc: fix wrong quota mount option description

We should use "{usr,grp,prj}jquota=" to disable journaled quota,
rather than using off{usr,grp,prj}jquota.

Fixes: 4b2414d04e99 ("f2fs: support journalled quota")
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: use kfree() instead of kvfree() to free some memory

options in f2fs_fill_super is alloc by kstrdup:
options = kstrdup((const char *)data, GFP_KERNEL)
sit_bitmap[_mir], nat_bitmap[_mir] are alloc by kmemdup:
sit_i->sit_bitmap = kmemdup(src_bitmap, sit_bitmap_size, GFP_KERNEL);
sit_i->sit_bitmap_mir = kmemdup(src_bitmap,
sit_bitmap_size, GFP_KERNEL);
nm_i->nat_bitmap = kmemdup(version_bitmap, nm_i->bitmap_size,
GFP_KERNEL);
nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size,
GFP_KERNEL);
write_io is alloc by f2fs_kmalloc:
sbi->write_io[i] = f2fs_kmalloc(sbi,
array_size(n, sizeof(struct f2fs_bio_info))

Use kfree is more efficient.

Signed-off-by: Jiazi Li <jqqlijiazi@gmail.com>
Signed-off-by: peixuan.qiu <peixuan.qiu@transsion.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: fix to use f2fs_is_valid_blkaddr_raw() in do_write_page()

As syzbot reported as below:

F2FS-fs (loop9): inject invalid blkaddr in f2fs_is_valid_blkaddr of do_write_page+0x277/0xb10 fs/f2fs/segment.c:3956
------------[ cut here ]------------
kernel BUG at fs/f2fs/segment.c:3957!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 10538 Comm: syz-executor Not tainted 6.16.0-rc3-next-20250627-syzkaller #0 PREEMPT(full)
Call Trace:
 <TASK>
 f2fs_outplace_write_data+0x11a/0x220 fs/f2fs/segment.c:4017
 f2fs_do_write_data_page+0x12ea/0x1a40 fs/f2fs/data.c:2752
 f2fs_write_single_data_page+0xa68/0x1680 fs/f2fs/data.c:2851
 f2fs_write_cache_pages fs/f2fs/data.c:3133 [inline]
 __f2fs_write_data_pages fs/f2fs/data.c:3282 [inline]
 f2fs_write_data_pages+0x195b/0x3000 fs/f2fs/data.c:3309
 do_writepages+0x32b/0x550 mm/page-writeback.c:2636
 filemap_fdatawrite_wbc mm/filemap.c:386 [inline]
 __filemap_fdatawrite_range mm/filemap.c:419 [inline]
 __filemap_fdatawrite mm/filemap.c:425 [inline]
 filemap_fdatawrite+0x199/0x240 mm/filemap.c:430
 f2fs_sync_dirty_inodes+0x31f/0x830 fs/f2fs/checkpoint.c:1108
 block_operations fs/f2fs/checkpoint.c:1247 [inline]
 f2fs_write_checkpoint+0x95a/0x1df0 fs/f2fs/checkpoint.c:1638
 kill_f2fs_super+0x2c3/0x6c0 fs/f2fs/super.c:5081
 deactivate_locked_super+0xb9/0x130 fs/super.c:474
 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1417
 task_work_run+0x1d4/0x260 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0xec/0x110 kernel/entry/common.c:114
 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
 do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

If we inject block address fault, it may trigger kernel panic, we need
to use f2fs_is_valid_blkaddr_raw() instead of f2fs_is_valid_blkaddr()
in do_write_page() to avoid such issue.

Fixes: 70b6e8500431 ("f2fs: do sanity check on fio.new_blkaddr in do_write_page()")
Reported-by: syzbot+9201a61c060513d4be38@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/linux-f2fs-devel/68639520.a70a0220.3b7e22.17e6.GAE@google.com
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: avoid splitting bio when reading multiple pages

When fewer pages are read, nr_pages may be smaller than nr_cpages. Due
to the nr_vecs limit, the compressed pages will be split into multiple
bios and then merged at the block level. In this case, nr_cpages should
be used to pre-allocate bvecs.
To handle this case, align max_nr_pages to cluster_size, which should be
enough for all compressed pages.

Signed-off-by: Jianan Huang <huangjianan@xiaomi.com>
Signed-off-by: Sheng Yong <shengyong1@xiaomi.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: check the generic conditions first

Let's return errors caught by the generic checks. This fixes generic/494 where
it expects to see EBUSY by setattr_prepare instead of EINVAL by f2fs for active
swapfile.

Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: don't allow unaligned truncation to smaller/equal size on pinned file

To prevent scattered pin block generation, don't allow non-section aligned truncation
to smaller or equal size on pinned file. But for truncation to larger size, after
commit 3fdd89b452c2("f2fs: prevent writing without fallocate() for pinned files"),
we only support overwrite IO to pinned file, so we don't need to consider
attr->ia_size > i_size case.

Signed-off-by: wangzijie <wangzijie1@honor.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: fix to check upper boundary for gc_no_zoned_gc_percent

This patch adds missing upper boundary check while setting
gc_no_zoned_gc_percent via sysfs.

Fixes: 9a481a1c16f4 ("f2fs: create gc_no_zoned_gc_percent and gc_boost_zoned_gc_percent")
Cc: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: fix to check upper boundary for gc_valid_thresh_ratio

This patch adds missing upper boundary check while setting
gc_valid_thresh_ratio via sysfs.

Fixes: e791d00bd06c ("f2fs: add valid block ratio not to do excessive GC for one time GC")
Cc: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: account and print more stats during recovery

F2FS-fs (vdc): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
F2FS-fs (vdc): do_recover_data: start to recover dnode
F2FS-fs (vdc): recover_inode: ino = 5, name = testfile.t2, inline = 21
F2FS-fs (vdc): recover_data: ino = 5, nid = 5 (i_size: recover), range (0, 864), recovered = 1, err = 0
F2FS-fs (vdc): do_recover_data: dnode: (recoverable: 256, fsynced: 256, total: 256), recovered: (inode: 256, dentry: 1, dnode: 256), err: 0

Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: enable tuning of boost_zoned_gc_percent via sysfs

to allow users to dynamically tune
the boost_zoned_gc_percent parameter

Signed-off-by: yohan.joung <yohan.joung@sk.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: fix to check upper boundary for value of gc_boost_zoned_gc_percent

to check the upper boundary when setting gc_boost_zoned_gc_percent

Fixes: 9a481a1c16f4 ("f2fs: create gc_no_zoned_gc_percent and gc_boost_zoned_gc_percent")
Signed-off-by: yohan.joung <yohan.joung@sk.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: fix KMSAN uninit-value in extent_info usage

KMSAN reported a use of uninitialized value in `__is_extent_mergeable()`
 and `__is_back_mergeable()` via the read extent tree path.

The root cause is that `get_read_extent_info()` only initializes three
fields (`fofs`, `blk`, `len`) of `struct extent_info`, leaving the
remaining fields uninitialized. This leads to undefined behavior
when those fields are accessed later, especially during
extent merging.

Fix it by zero-initializing the `extent_info` struct before population.

Reported-by: syzbot+b8c1d60e95df65e827d4@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=b8c1d60e95df65e827d4
Fixes: 94afd6d6e525 ("f2fs: extent cache: support unaligned extent")
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Abinash Singh <abinashsinghlalotra@gmail.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: convert F2FS_I_SB to sbi in f2fs_setattr()

Introduce sbi in f2fs_setattr() and convert F2FS_I_SB to it. No logic
change, just cleanup and prepare to get CAP_BLKS_PER_SEC(sbi).

Signed-off-by: wangzijie <wangzijie1@honor.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: Fix the typos in comments

This patch fixes minor typos in comments in f2fs.

Signed-off-by: Swarna Prabhu <s.prabhu@samsung.com>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: compress: fix UAF of f2fs_inode_info in f2fs_free_dic

The decompress_io_ctx may be released asynchronously after
I/O completion. If this file is deleted immediately after read,
and the kworker of processing post_read_wq has not been executed yet
due to high workloads, It is possible that the inode(f2fs_inode_info)
is evicted and freed before it is used f2fs_free_dic.

    The UAF case as below:
    Thread A                                      Thread B
    - f2fs_decompress_end_io
     - f2fs_put_dic
      - queue_work
        add free_dic work to post_read_wq
                                                   - do_unlink
                                                    - iput
                                                     - evict
                                                      - call_rcu
    This file is deleted after read.

    Thread C                                 kworker to process post_read_wq
    - rcu_do_batch
     - f2fs_free_inode
      - kmem_cache_free
     inode is freed by rcu
                                             - process_scheduled_works
                                              - f2fs_late_free_dic
                                               - f2fs_free_dic
                                                - f2fs_release_decomp_mem
                                      read (dic->inode)->i_compress_algorithm

This patch store compress_algorithm and sbi in dic to avoid inode UAF.

In addition, the previous solution is deprecated in [1] may cause system hang.
[1] https://lore.kernel.org/all/c36ab955-c8db-4a8b-a9d0-f07b5f426c3f@kernel.org

Cc: Daeho Jeong <daehojeong@google.com>
Fixes: bff139b49d9f ("f2fs: handle decompress only post processing in softirq")
Signed-off-by: Zhiguo Niu <zhiguo.niu@unisoc.com>
Signed-off-by: Baocong Liu <baocong.liu@unisoc.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

f2fs: compress: change the first parameter of page_array_{alloc,free} to sbi

No logic changes, just cleanup and prepare for fixing the UAF issue
in f2fs_free_dic.

Signed-off-by: Zhiguo Niu <zhiguo.niu@unisoc.com>
Signed-off-by: Baocong Liu <baocong.liu@unisoc.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>