The use of the term "glue" in filenames is a Crypto API-ism that rarely
shows up elsewhere in lib/ or arch/*/lib/. I think adopting it there
was a mistake. The library just uses standard functions, so the amount
of code that could be considered "glue" is quite small. And while often
the C functions just wrap the assembly functions, there are also cases
like crc32c_arch() in arch/x86/lib/crc32-glue.c that blur the line by
in-lining the actual implementation into the C function. That's not
"glue code", but rather the actual code.
Therefore, let's drop "glue" from the filenames and instead use e.g.
crc32.c instead of crc32-glue.c.
Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250424002038.179114-3-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
The use of the term "glue" in filenames is a Crypto API-ism that rarely
shows up elsewhere in lib/ or arch/*/lib/. I think adopting it there
was a mistake. The library just uses standard functions, so the amount
of code that could be considered "glue" is quite small. And while often
the C functions just wrap the assembly functions, there are also cases
like crc32c_arch() in arch/x86/lib/crc32-glue.c that blur the line by
in-lining the actual implementation into the C function. That's not
"glue code", but rather the actual code.
Therefore, let's drop "glue" from the filenames and instead use e.g.
crc32.c instead of crc32-glue.c.
Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250424002038.179114-2-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Now that the crc32-s390 module init function is a no-op, there is no
need to define it. Remove it. The removal of the init function also
makes the exit function unnecessary, so remove that too.
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Link: https://lore.kernel.org/r/20250417163829.4599-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Replace the have_vxrs static key with a cpu_has_vx() call. cpu_has_vx()
resolves into a compile time constant (true) if the kernel is compiled
for z13 or newer. Otherwise it generates an unconditional one
instruction branch, which is patched based on CPU alternatives.
In any case the generated code is at least as good as before and avoids
static key handling.
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Link: https://lore.kernel.org/r/20250417125318.12521F12-hca@linux.ibm.com/
Signed-off-by: Eric Biggers <ebiggers@google.com>
All of the CRC library's CPU feature static_keys are initialized by
initcalls and never change afterwards, so there's no need for them to be
in the regular .data section. Put them in .data..ro_after_init instead.
Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Heiko Carstens <hca@linux.ibm.com> # s390
Link: https://lore.kernel.org/r/20250413154350.10819-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
When validating decoder IW/IG when setting up regions, the granularity
is irrelevant when iw=1 - all accesses will always route to the only
target anyway - so all ig values are "correct". Loosen the requirement
that `ig = (parent_iw * parent_ig)` when iw=1.
On some Zen5 platforms, the platform BIOS specifies a 256-byte
interleave granularity window for host bridges when there is only
one target downstream. This leads to Linux rejecting the configuration
of a region with a x2 root with two x1 hostbridges.
Decoder Programming:
root - iw:2 ig:256
hb1 - iw:1 ig:256 (Linux expects 512)
hb2 - iw:1 ig:256 (Linux expects 512)
ep1 - iw:2 ig:256
ep2 - iw:2 ig:256
This change allows all decoders downstream of a passthrough decoder to
also be configured as passthrough (iw:1 ig:X), but still disallows
downstream decoders from applying subsequent interleaves.
e.g. in the above example if there was another decoder south of hb1
attempting to interleave 2 endpoints - Linux would enforce hb1.ig=512
because the southern decoder would have iw:2 and require ig=pig*piw.
[DJ: Fixed up against 6.15-rc1]
Signed-off-by: Gregory Price <gourry@gourry.net>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Tested-by: Li Zhijian <lizhijian@fujitsu.com>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Link: https://patch.msgid.link/20250402232552.999634-1-gourry@gourry.net
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Per CXL Spec r3.1 Table 9-21, both CXL1.1 and CXL2.0 have defined their
own length, verify it to avoid an invalid CHBS.
Additionally, this patch also removes the redundant macro CXL_RCRB_SIZE,
favoring the use of `ACPI_CEDT_CHBS_LENGTH_CXL11`, which offers clearer
semantic meaning.
[DJ: Code edited for readability suggested by djbw]
Reviewed-by: Gregory Price <gourry@gourry.net>
Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Link: https://patch.msgid.link/20250410010545.99590-1-lizhijian@fujitsu.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
smatch warnings:
drivers/cxl/core/features.c:441 cxlctl_validate_hw_command() warn: always true condition '(scope >= 0) => (0-u32max >= 0)'
Remove the check entirely as it has no effect. Expectation is both of these
operations should be allowed for all check levels. They are read only and
have no change effects.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202504041033.2HBboAZR-lkp@intel.com/
Reviewed-by: Li Ming <ming.li@zohomail.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://patch.msgid.link/20250404165418.3032414-1-dave.jiang@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
A zoned device can has both conventional zones and sequential zones,
so we should not treat first segment of zoned device as first_zoned_segno,
instead, we need to check zone type for each zone during traversing zoned
device to find first_zoned_segno.
Otherwise, for below case, first_zoned_segno will be 0, which could be
wrong.
create_null_blk 512 2 1024 1024
mkfs.f2fs -m /dev/nullb0
Testcase:
export SCRIPTS_PATH=/share/git/scripts
test multiple devices w/ zoned device
for ((i=0;i<8;i++)) do {
zonesize=$((2<<$i))
conzone=$((4096/$zonesize))
seqzone=$((4096/$zonesize))
$SCRIPTS_PATH/nullblk_create.sh 512 $zonesize $conzone $seqzone
mkfs.f2fs -f -m /dev/vdb -c /dev/nullb0
mount /dev/vdb /mnt/f2fs
touch /mnt/f2fs/file
f2fs_io pinfile set /mnt/f2fs/file $((8589934592*2))
stat /mnt/f2fs/file
df
cat /proc/fs/f2fs/vdb/segment_info
umount /mnt/f2fs
$SCRIPTS_PATH/nullblk_remove.sh 0
} done
test single zoned device
for ((i=0;i<8;i++)) do {
zonesize=$((2<<$i))
conzone=$((4096/$zonesize))
seqzone=$((4096/$zonesize))
$SCRIPTS_PATH/nullblk_create.sh 512 $zonesize $conzone $seqzone
mkfs.f2fs -f -m /dev/nullb0
mount /dev/nullb0 /mnt/f2fs
touch /mnt/f2fs/file
f2fs_io pinfile set /mnt/f2fs/file $((8589934592*2))
stat /mnt/f2fs/file
df
cat /proc/fs/f2fs/nullb0/segment_info
umount /mnt/f2fs
$SCRIPTS_PATH/nullblk_remove.sh 0
} done
Fixes: 9703d69d9d ("f2fs: support file pinning for zoned devices")
Cc: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
w/ below testcase, resize will generate a corrupted image which
contains inconsistent metadata, so when mounting such image, it
will trigger kernel panic:
touch img
truncate -s $((512*1024*1024*1024)) img
mkfs.f2fs -f img $((256*1024*1024))
resize.f2fs -s -i img -t $((1024*1024*1024))
mount img /mnt/f2fs
------------[ cut here ]------------
kernel BUG at fs/f2fs/segment.h:863!
Oops: invalid opcode: 0000 [#1] SMP PTI
CPU: 11 UID: 0 PID: 3922 Comm: mount Not tainted 6.15.0-rc1+ #191 PREEMPT(voluntary)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:f2fs_ra_meta_pages+0x47c/0x490
Call Trace:
f2fs_build_segment_manager+0x11c3/0x2600
f2fs_fill_super+0xe97/0x2840
mount_bdev+0xf4/0x140
legacy_get_tree+0x2b/0x50
vfs_get_tree+0x29/0xd0
path_mount+0x487/0xaf0
__x64_sys_mount+0x116/0x150
do_syscall_64+0x82/0x190
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fdbfde1bcfe
The reaseon is:
sit_i->bitmap_size is 192, so size of sit bitmap is 192*8=1536, at maximum
there are 1536 sit blocks, however MAIN_SEGS is 261893, so that sit_blk_cnt
is 4762, build_sit_entries() -> current_sit_addr() tries to access
out-of-boundary in sit_bitmap at offset from [1536, 4762), once sit_bitmap
and sit_bitmap_mirror is not the same, it will trigger f2fs_bug_on().
Let's add sanity check in f2fs_sanity_check_ckpt() to avoid panic.
Cc: stable@vger.kernel.org
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Jan Prusakowski reported a f2fs bug as below:
f2fs/007 will hang kernel during testing w/ below configs:
kernel 6.12.18 (from pixel-kernel/android16-6.12)
export MKFS_OPTIONS="-O encrypt -O extra_attr -O project_quota -O quota"
export F2FS_MOUNT_OPTIONS="test_dummy_encryption,discard,fsync_mode=nobarrier,reserve_root=32768,checkpoint_merge,atgc"
cat /proc/<umount_proc_id>/stack
f2fs_wait_on_all_pages+0xa3/0x130
do_checkpoint+0x40c/0x5d0
f2fs_write_checkpoint+0x258/0x550
kill_f2fs_super+0x14f/0x190
deactivate_locked_super+0x30/0xb0
cleanup_mnt+0xba/0x150
task_work_run+0x59/0xa0
syscall_exit_to_user_mode+0x12d/0x130
do_syscall_64+0x57/0x110
entry_SYSCALL_64_after_hwframe+0x76/0x7e
cat /sys/kernel/debug/f2fs/status
- IO_W (CP: -256, Data: 256, Flush: ( 0 0 1), Discard: ( 0 0)) cmd: 0 undiscard: 0
CP IOs reference count becomes negative.
The root cause is:
After 4961acdd65 ("f2fs: fix to tag gcing flag on page during block
migration"), we will tag page w/ gcing flag for raw page of cluster
during its migration.
However, if the inode is both encrypted and compressed, during
ioc_decompress(), it will tag page w/ gcing flag, and it increase
F2FS_WB_DATA reference count:
- f2fs_write_multi_page
- f2fs_write_raw_page
- f2fs_write_single_page
- do_write_page
- f2fs_submit_page_write
- WB_DATA_TYPE(bio_page, fio->compressed_page)
: bio_page is encrypted, so mapping is NULL, and fio->compressed_page
is NULL, it returns F2FS_WB_DATA
- inc_page_count(.., F2FS_WB_DATA)
Then, during end_io(), it decrease F2FS_WB_CP_DATA reference count:
- f2fs_write_end_io
- f2fs_compress_write_end_io
- fscrypt_pagecache_folio
: get raw page from encrypted page
- WB_DATA_TYPE(&folio->page, false)
: raw page has gcing flag, it returns F2FS_WB_CP_DATA
- dec_page_count(.., F2FS_WB_CP_DATA)
In order to fix this issue, we need to detect gcing flag in raw page
in f2fs_is_cp_guaranteed().
Fixes: 4961acdd65 ("f2fs: fix to tag gcing flag on page during block migration")
Reported-by: Jan Prusakowski <jprusakowski@google.com>
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Both callers have a folio so pass it in, removing five calls 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>
Get a folio from the page cache and use it throughout. Removes
six calls 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>
All callers now use f2fs_new_node_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>
Convert all callers to set/get a folio instead of a page. Removes
five calls 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>
All callers except __get_inode_rdev() and __set_inode_rdev() now have a
folio, but the only callers of those two functions do have a folio, so
pass the folio to them and then into get_dnode_addr().
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
All assignments to this struct member are conversions from a folio
so convert it to be a folio and convert all users. At the same time,
convert data_blkaddr() to take a folio as all callers now have a folio.
Remove eight calls 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>
All callers have a folio, so pass it in. Removes two calls 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>
All callers now have a folio, so pass it in. Remove two calls 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>
Convert all three callers to handle a folio return. Remove three
calls 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>
The only caller alredy has a folio so pass it in. Remove two calls
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>
Fetch a folio from the pagecache and use it. Removes two calls
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>
Support large folios & simplify the loops in redirty_blocks().
Use the folio APIs and remove four calls 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>
Fetch a folio from the page cache instead of a page. Removes two calls
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>
The only caller already has a folio, so pass it in. Copy the entire
size of the folio to support large block sizes. Remove two calls 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>
Add f2fs_filemap_get_folio() as a wrapper around __filemap_get_folio()
which can inject an error. Removes seven calls 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>
Look up a folio instead of a page, and if that fails, allocate a folio.
Removes five calls to compound_head(), one of the last few references to
add_to_page_cache_lru() and honours the cpuset_do_page_mem_spread()
setting.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Fetch a folio from the pagecache instead of a page. Removes two calls
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>
Fetch a folio from the pagecache instead of a page. Removes two
calls 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>
All callers now have a folio, pass it in. Removes four calls 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>
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>
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>
The only caller has a folio so pass it in. Removes two calls 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>
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>
The caller now has a folio so pass it in. Removes four calls 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>
All callers now have a folio so pass it in. Removes eight calls 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>
Convert all the callers to pass a folio. Removes three calls 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>
Convert all callers to pass in a pointer to a folio instead of a page.
Also convert f2fs_inode_by_name() to take a folio pointer. Removes
six calls 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>
Also pass a folio to f2fs_find_in_inline_dir() and find_in_level().
Remove three calls 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>
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>
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>
Also rename inode_page_locked to inode_folio_locked. Removes five
calls 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>
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>
The only caller already has a folio, so pass it in. 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>
The only caller has a folio, so pass it in. Removes two hidden calls
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>
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>
The 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>
