READ_ONLY_THP_FOR_FS is no longer present, delete related code.
Signed-off-by: Zi Yan <[email protected]>
---
fs/open.c | 27 ---------------------------
1 file changed, 27 deletions(-)
diff --git a/fs/open.c b/fs/open.c
index 91f1139591ab..cef382d9d8b8 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -970,33 +970,6 @@ static int do_dentry_open(struct file *f,
if ((f->f_flags & O_DIRECT) && !(f->f_mode & FMODE_CAN_ODIRECT))
return -EINVAL;
- /*
- * XXX: Huge page cache doesn't support writing yet. Drop all page
- * cache for this file before processing writes.
- */
- if (f->f_mode & FMODE_WRITE) {
- /*
- * Depends on full fence from get_write_access() to synchronize
- * against collapse_file() regarding i_writecount and nr_thps
- * updates. Ensures subsequent insertion of THPs into the page
- * cache will fail.
- */
- if (filemap_nr_thps(inode->i_mapping)) {
- struct address_space *mapping = inode->i_mapping;
-
- filemap_invalidate_lock(inode->i_mapping);
- /*
- * unmap_mapping_range just need to be called once
- * here, because the private pages is not need to be
- * unmapped mapping (e.g. data segment of dynamic
- * shared libraries here).
- */
- unmap_mapping_range(mapping, 0, 0, 0);
- truncate_inode_pages(mapping, 0);
- filemap_invalidate_unlock(inode->i_mapping);
- }
- }
-
return 0;
cleanup_all:
--
2.43.0
