diff options
Diffstat (limited to 'fs/open.c')
| -rw-r--r-- | fs/open.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/fs/open.c b/fs/open.c index a5c4f8a0f143..c4e9b01aafd8 100644 --- a/fs/open.c +++ b/fs/open.c @@ -986,12 +986,11 @@ static int do_dentry_open(struct file *f, */ if (f->f_mode & FMODE_WRITE) { /* - * Paired with smp_mb() in collapse_file() to ensure nr_thps - * is up to date and the update to i_writecount by - * get_write_access() is visible. Ensures subsequent insertion - * of THPs into the page cache will fail. + * 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. */ - smp_mb(); if (filemap_nr_thps(inode->i_mapping)) { struct address_space *mapping = inode->i_mapping; |