diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/inode.c | 3 | ||||
| -rw-r--r-- | fs/open.c | 8 |
2 files changed, 11 insertions, 0 deletions
diff --git a/fs/inode.c b/fs/inode.c index 64bf28cf05cd..fef457a42882 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -181,6 +181,9 @@ int inode_init_always(struct super_block *sb, struct inode *inode) mapping->flags = 0; mapping->wb_err = 0; atomic_set(&mapping->i_mmap_writable, 0); +#ifdef CONFIG_READ_ONLY_THP_FOR_FS + atomic_set(&mapping->nr_thps, 0); +#endif mapping_set_gfp_mask(mapping, GFP_HIGHUSER_MOVABLE); mapping->private_data = NULL; mapping->writeback_index = 0; diff --git a/fs/open.c b/fs/open.c index a59abe3c669a..c60cd22cc052 100644 --- a/fs/open.c +++ b/fs/open.c @@ -818,6 +818,14 @@ static int do_dentry_open(struct file *f, if (!f->f_mapping->a_ops || !f->f_mapping->a_ops->direct_IO) 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) && filemap_nr_thps(inode->i_mapping)) + truncate_pagecache(inode, 0); + return 0; cleanup_all: |