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David Hildenbrand 1f1c061089 mm/huge_memory: convert "tva_flags" to "enum tva_type" 
When determining which THP orders are eligible for a VMA mapping, we have
previously specified tva_flags, however it turns out it is really not
necessary to treat these as flags.

Rather, we distinguish between distinct modes.

The only case where we previously combined flags was with
TVA_ENFORCE_SYSFS, but we can avoid this by observing that this is the
default, except for MADV_COLLAPSE or an edge cases in
collapse_pte_mapped_thp() and hugepage_vma_revalidate(), and adding a mode
specifically for this case - TVA_FORCED_COLLAPSE.

We have:
* smaps handling for showing "THPeligible"
* Pagefault handling
* khugepaged handling
* Forced collapse handling: primarily MADV_COLLAPSE, but also for
  an edge case in collapse_pte_mapped_thp()

Disregarding the edge cases, we only want to ignore sysfs settings only
when we are forcing a collapse through MADV_COLLAPSE, otherwise we want to
enforce it, hence this patch does the following flag to enum conversions:

* TVA_SMAPS | TVA_ENFORCE_SYSFS -> TVA_SMAPS
* TVA_IN_PF | TVA_ENFORCE_SYSFS -> TVA_PAGEFAULT
* TVA_ENFORCE_SYSFS             -> TVA_KHUGEPAGED
* 0                             -> TVA_FORCED_COLLAPSE

With this change, we immediately know if we are in the forced collapse
case, which will be valuable next.

Link: https://lkml.kernel.org/r/20250815135549.130506-3-usamaarif642@gmail.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Usama Arif <usamaarif642@gmail.com>
Acked-by: Usama Arif <usamaarif642@gmail.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Barry Song <baohua@kernel.org>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Jann Horn <jannh@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Mariano Pache <npache@redhat.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: SeongJae Park <sj@kernel.org>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Yafang <laoar.shao@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 		2025-09-13 16:55:05 -07:00
..
9p vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
adfs vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
affs vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
afs vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
autofs new helper: set_default_d_op() 2025-06-10 22:21:16 -04:00
bcachefs mm/slub: allow to set node and align in k[v]realloc 2025-09-13 16:54:45 -07:00
befs
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bfs vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
btrfs treewide: remove MIGRATEPAGE_SUCCESS 2025-09-13 16:54:50 -07:00
cachefiles vfs-6.17-rc1.misc 2025-07-28 11:22:56 -07:00
ceph Summary of significant series in this pull request: 2025-07-31 14:57:54 -07:00
coda vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
configfs configfs: use DCACHE_DONTCACHE 2025-06-11 13:41:05 -04:00
cramfs mm: remove callers of pfn_t functionality 2025-07-09 22:42:19 -07:00
crypto fscrypt: Remove gfp_t argument from fscrypt_encrypt_block_inplace() 2025-07-10 12:33:13 -07:00
debugfs debugfs: fix mount options not being applied 2025-08-17 12:22:25 +02:00
devpts devpts, sunrpc, hostfs: don't bother with ->d_op 2025-06-11 13:40:04 -04:00
dlm treewide, timers: Rename from_timer() to timer_container_of() 2025-06-08 09:07:37 +02:00
ecryptfs vfs-6.17-rc1.fileattr 2025-07-28 15:24:14 -07:00
efivarfs efivarfs: Fix slab-out-of-bounds in efivarfs_d_compare 2025-08-28 08:39:49 +02:00
efs
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erofs erofs: fix block count report when 48-bit layout is on 2025-08-11 06:31:19 +08:00
exfat exfat: add cluster chain loop check for dir 2025-08-01 08:34:23 +09:00
exportfs exportfs: use lookup_one_unlocked() 2025-06-11 13:44:15 +02:00
ext2 \n 2025-07-28 16:16:09 -07:00
ext4 Ext4 bug fixes and cleanups for 6.17-rc3, including most notably: 2025-08-18 09:01:00 -07:00
f2fs f2fs-for-6.17-rc1 2025-08-04 16:27:21 -07:00
fat Significant patch series in this pull request: 2025-08-03 16:23:09 -07:00
freevxfs
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fuse fuse: keep inode->i_blkbits constant 2025-08-11 14:51:50 +02:00
gfs2 vfs-6.17-rc1.iomap 2025-07-28 16:09:03 -07:00
hfs hfs/hfsplus updates for v6.17 2025-07-28 16:17:44 -07:00
hfsplus hfs/hfsplus updates for v6.17 2025-07-28 16:17:44 -07:00
hostfs vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
hpfs vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
hugetlbfs treewide: remove MIGRATEPAGE_SUCCESS 2025-09-13 16:54:50 -07:00
iomap iomap: Fix broken data integrity guarantees for O_SYNC writes 2025-08-11 14:51:49 +02:00
isofs Current exclusion rules for ->d_flags stores are rather unpleasant. 2025-07-28 09:17:57 -07:00
jbd2 jbd2: prevent softlockup in jbd2_log_do_checkpoint() 2025-08-13 14:24:14 -04:00
jffs2 vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
jfs treewide: remove MIGRATEPAGE_SUCCESS 2025-09-13 16:54:50 -07:00
kernfs kernfs: don't fail listing extended attributes 2025-08-19 13:51:28 +02:00
lockd
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minix vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
netfs netfs: Fix unbuffered write error handling 2025-08-15 15:56:49 +02:00
nfs NFS: Fix a race when updating an existing write 2025-08-19 11:16:02 -07:00
nfs_common NFS/localio: nfs_uuid_put() fix the wake up after unlinking the file 2025-08-05 16:45:40 -07:00
nfsd nfsd-6.17 fixes: 2025-08-11 07:38:55 -07:00
nilfs2 vfs-6.17-rc1.fileattr 2025-07-28 15:24:14 -07:00
nls
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notify \n 2025-07-31 10:31:00 -07:00
ntfs3 vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
ocfs2 ocfs2: prevent release journal inode after journal shutdown 2025-08-27 22:45:41 -07:00
omfs vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
openpromfs
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orangefs orangefs: fixes for string handling in debugfs and sysfs 2025-07-31 10:22:48 -07:00
overlayfs ovl: fix possible double unlink 2025-08-18 13:16:49 +02:00
proc mm/huge_memory: convert "tva_flags" to "enum tva_type" 2025-09-13 16:55:05 -07:00
pstore pstore: switch to locked_recursive_removal() 2025-07-02 22:36:51 -04:00
qnx4
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qnx6
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quota VFS: rename lookup_one_len family to lookup_noperm and remove permission check 2025-04-08 11:24:36 +02:00
ramfs vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
resctrl resctrl: get rid of pointless debugfs_file_{get,put}() 2025-07-09 13:30:28 +02:00
romfs fs: replace mmap hook with .mmap_prepare for simple mappings 2025-06-19 13:56:59 +02:00
smb fs/smb: Fix inconsistent refcnt update 2025-08-27 14:59:06 -05:00
squashfs squashfs: fix memory leak in squashfs_fill_super 2025-08-19 16:35:53 -07:00
sysfs sysfs: constify internal references to 'struct bin_attribute' 2025-06-17 10:44:09 +02:00
tests
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tracefs Massage rpc_pipefs to use saner primitives and clean up the 2025-07-28 09:56:09 -07:00
ubifs This pull request contains the following changes for UBI and UBIFS: 2025-07-31 10:08:44 -07:00
udf \n 2025-07-28 16:16:09 -07:00
ufs vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
unicode
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vboxsf vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
verity fsverity: Switch from crypto_shash to SHA-2 library 2025-07-14 11:29:32 -07:00
xfs xfs: do not propagate ENODATA disk errors into xattr code 2025-08-26 11:00:33 +02:00
zonefs zonefs changes for 6.17-rc1 2025-07-28 17:06:51 -07:00
Kconfig fs/Kconfig: enable HUGETLBFS only if ARCH_SUPPORTS_HUGETLBFS 2025-07-24 19:12:38 -07:00
Kconfig.binfmt
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Makefile fs: split fileattr related helpers into separate file 2025-07-01 22:44:22 +02:00
aio.c treewide: remove MIGRATEPAGE_SUCCESS 2025-09-13 16:54:50 -07:00
anon_inodes.c module: Rename EXPORT_SYMBOL_GPL_FOR_MODULES to EXPORT_SYMBOL_FOR_MODULES 2025-08-11 16:16:36 +02:00
attr.c docs/vfs: update references to i_mutex to i_rwsem 2025-06-23 12:17:33 +02:00
backing-file.c vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
bad_inode.c
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binfmt_elf.c execve updates for v6.17 2025-07-28 17:11:40 -07:00
binfmt_elf_fdpic.c execve updates for v6.17 2025-07-28 17:11:40 -07:00
binfmt_flat.c
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binfmt_misc.c binfmt_misc: switch to locked_recursive_removal() 2025-07-02 22:36:51 -04:00
binfmt_script.c
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bpf_fs_kfuncs.c bpf: Introduce bpf_cgroup_read_xattr to read xattr of cgroup's node 2025-07-02 14:18:20 +02:00
buffer.c fs/buffer: fix use-after-free when call bh_read() helper 2025-08-19 13:51:28 +02:00
char_dev.c
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compat_binfmt_elf.c
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coredump.c mm: update coredump logic to correctly use bitmap mm flags 2025-09-13 16:54:57 -07:00
d_path.c fold fs_struct->{lock,seq} into a seqlock 2025-07-08 10:25:19 +02:00
dax.c fs/dax: use vmf_insert_folio_pmd() to insert the huge zero folio 2025-09-13 16:54:51 -07:00
dcache.c vfs-6.17-rc1.misc 2025-07-28 11:22:56 -07:00
direct-io.c Summary of significant series in this pull request: 2025-07-31 14:57:54 -07:00
drop_caches.c
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eventfd.c
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eventpoll.c vfs-6.17-rc1.misc 2025-07-28 11:22:56 -07:00
exec.c mm: update coredump logic to correctly use bitmap mm flags 2025-09-13 16:54:57 -07:00
fcntl.c
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fhandle.c fhandle: do_handle_open() should get FD with user flags 2025-08-15 15:46:57 +02:00
file.c vfs-6.17-rc1.misc 2025-07-28 11:22:56 -07:00
file_attr.c fs: tighten a sanity check in file_attr_to_fileattr() 2025-07-16 10:22:01 +02:00
file_table.c \n 2025-07-31 10:31:00 -07:00
filesystems.c fs/filesystems: Fix potential unsigned integer underflow in fs_name() 2025-04-14 13:05:59 +02:00
fs-writeback.c fs: writeback: fix use-after-free in __mark_inode_dirty() 2025-08-11 14:51:45 +02:00
fs_context.c fs/fs_context: Mark an unlikely if condition with unlikely() in vfs_parse_monolithic_sep() 2025-04-14 13:05:59 +02:00
fs_parser.c fs/fs_parse: Remove unused and problematic validate_constant_table() 2025-04-21 10:27:59 +02:00
fs_pin.c
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fs_struct.c fold fs_struct->{lock,seq} into a seqlock 2025-07-08 10:25:19 +02:00
fs_types.c
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fsopen.c
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init.c
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inode.c vfs: Remove unnecessary list_for_each_entry_safe() from evict_inodes() 2025-07-10 09:37:32 +02:00
internal.h vfs-6.17-rc1.pidfs 2025-07-28 14:10:15 -07:00
ioctl.c fs: split fileattr related helpers into separate file 2025-07-01 22:44:22 +02:00
kernel_read_file.c
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libfs.c vfs-6.17-rc1.pidfs 2025-07-28 14:10:15 -07:00
locks.c docs/vfs: update references to i_mutex to i_rwsem 2025-06-23 12:17:33 +02:00
mbcache.c
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mnt_idmapping.c
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mount.h copy_tree(): don't link the mounts via mnt_list 2025-06-29 19:03:37 -04:00
mpage.c fs: use writeback_iter directly in mpage_writepages 2025-05-09 12:37:48 +02:00
namei.c vfs-6.17-rc1.pidfs 2025-07-28 14:10:15 -07:00
namespace.c fixes for several recent mount-related regressions 2025-08-19 10:12:10 -07:00
nsfs.c
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open.c \n 2025-07-31 10:31:00 -07:00
pidfs.c mm: update coredump logic to correctly use bitmap mm flags 2025-09-13 16:54:57 -07:00
pipe.c fs/pipe: set FMODE_NOWAIT in create_pipe_files() 2025-06-10 13:16:19 +02:00
pnode.c change_mnt_propagation(): calculate propagation source only if we'll need it 2025-08-19 12:05:59 -04:00
pnode.h get rid of CL_SHARE_TO_SLAVE 2025-06-29 19:03:46 -04:00
posix_acl.c
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proc_namespace.c ->mnt_devname is never NULL 2025-05-23 14:20:44 +02:00
read_write.c vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
readdir.c readdir: supply dir_context.count as readdir buffer size hint 2025-05-29 12:31:23 +02:00
remap_range.c
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select.c fs: annotate suspected data race between poll_schedule_timeout() and pollwake() 2025-06-23 12:36:51 +02:00
seq_file.c
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signalfd.c
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splice.c netfs: Fix unbuffered write error handling 2025-08-15 15:56:49 +02:00
stack.c docs/vfs: update references to i_mutex to i_rwsem 2025-06-23 12:17:33 +02:00
stat.c xfs: New code for 6.16 2025-05-26 12:56:01 -07:00
statfs.c
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super.c vfs-6.17-rc1.super 2025-07-28 15:50:15 -07:00
sync.c
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sysctls.c
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timerfd.c
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userfaultfd.c mm/mremap: use an explicit uffd failure path for mremap 2025-07-24 19:12:29 -07:00
utimes.c
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xattr.c vfs-6.17-rc1.misc 2025-07-28 11:22:56 -07:00