diff options
| author | Wenjie Qi <qwjhust@gmail.com> | 2026-06-10 22:37:35 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2026-06-22 19:52:37 +0000 |
| commit | 242d30bfc0a84b8b5de0a88821b53c9ad7fd31c4 (patch) | |
| tree | babf1718964e4d15cd04272d2342125d70acd536 /fs | |
| parent | 90e02a8e1b6863c41876473f844c8e24b06d55f7 (diff) | |
f2fs: reject setattr size changes on large folio files
F2FS large folios are only enabled for immutable non-compressed files.
Writable open and writable mmap reject such mappings, but truncate(2)
through f2fs_setattr() misses the same guard.
If FS_IMMUTABLE_FL is cleared while the inode is still cached, the mapping
can keep large-folio support and ATTR_SIZE can change i_size. Reject size
changes in that state.
Cc: stable@kernel.org
Fixes: 05e65c14ea59 ("f2fs: support large folio for immutable non-compressed case")
Signed-off-by: Wenjie Qi <qiwenjie@xiaomi.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/f2fs/file.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 69aad1060c48..d240ca78a31f 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -1098,6 +1098,8 @@ int f2fs_setattr(struct mnt_idmap *idmap, struct dentry *dentry, return -EPERM; if ((attr->ia_valid & ATTR_SIZE)) { + if (mapping_large_folio_support(inode->i_mapping)) + return -EOPNOTSUPP; if (!f2fs_is_compress_backend_ready(inode) || IS_DEVICE_ALIASING(inode)) return -EOPNOTSUPP; |