diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/hugetlbfs/inode.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index a3f868ae3fd4..34423978b170 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c | |||
| @@ -463,6 +463,14 @@ static struct inode *hugetlbfs_get_root(struct super_block *sb, | |||
| 463 | return inode; | 463 | return inode; |
| 464 | } | 464 | } |
| 465 | 465 | ||
| 466 | /* | ||
| 467 | * Hugetlbfs is not reclaimable; therefore its i_mmap_mutex will never | ||
| 468 | * be taken from reclaim -- unlike regular filesystems. This needs an | ||
| 469 | * annotation because huge_pmd_share() does an allocation under | ||
| 470 | * i_mmap_mutex. | ||
| 471 | */ | ||
| 472 | struct lock_class_key hugetlbfs_i_mmap_mutex_key; | ||
| 473 | |||
| 466 | static struct inode *hugetlbfs_get_inode(struct super_block *sb, | 474 | static struct inode *hugetlbfs_get_inode(struct super_block *sb, |
| 467 | struct inode *dir, | 475 | struct inode *dir, |
| 468 | umode_t mode, dev_t dev) | 476 | umode_t mode, dev_t dev) |
| @@ -474,6 +482,8 @@ static struct inode *hugetlbfs_get_inode(struct super_block *sb, | |||
| 474 | struct hugetlbfs_inode_info *info; | 482 | struct hugetlbfs_inode_info *info; |
| 475 | inode->i_ino = get_next_ino(); | 483 | inode->i_ino = get_next_ino(); |
| 476 | inode_init_owner(inode, dir, mode); | 484 | inode_init_owner(inode, dir, mode); |
| 485 | lockdep_set_class(&inode->i_mapping->i_mmap_mutex, | ||
| 486 | &hugetlbfs_i_mmap_mutex_key); | ||
| 477 | inode->i_mapping->a_ops = &hugetlbfs_aops; | 487 | inode->i_mapping->a_ops = &hugetlbfs_aops; |
| 478 | inode->i_mapping->backing_dev_info =&hugetlbfs_backing_dev_info; | 488 | inode->i_mapping->backing_dev_info =&hugetlbfs_backing_dev_info; |
| 479 | inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; | 489 | inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; |