diff options
Diffstat (limited to 'fs/ext2/file.c')
| -rw-r--r-- | fs/ext2/file.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/fs/ext2/file.c b/fs/ext2/file.c index 39c4772e96c9..eb97aa3d700e 100644 --- a/fs/ext2/file.c +++ b/fs/ext2/file.c @@ -79,9 +79,9 @@ out_unlock: /* * The lock ordering for ext2 DAX fault paths is: * - * mmap_sem (MM) + * mmap_lock (MM) * sb_start_pagefault (vfs, freeze) - * ext2_inode_info->dax_sem + * address_space->invalidate_lock * address_space->i_mmap_rwsem or page_lock (mutually exclusive in DAX) * ext2_inode_info->truncate_mutex * @@ -91,19 +91,20 @@ out_unlock: static vm_fault_t ext2_dax_fault(struct vm_fault *vmf) { struct inode *inode = file_inode(vmf->vma->vm_file); - struct ext2_inode_info *ei = EXT2_I(inode); vm_fault_t ret; + bool write = (vmf->flags & FAULT_FLAG_WRITE) && + (vmf->vma->vm_flags & VM_SHARED); - if (vmf->flags & FAULT_FLAG_WRITE) { + if (write) { sb_start_pagefault(inode->i_sb); file_update_time(vmf->vma->vm_file); } - down_read(&ei->dax_sem); + filemap_invalidate_lock_shared(inode->i_mapping); ret = dax_iomap_fault(vmf, PE_SIZE_PTE, NULL, NULL, &ext2_iomap_ops); - up_read(&ei->dax_sem); - if (vmf->flags & FAULT_FLAG_WRITE) + filemap_invalidate_unlock_shared(inode->i_mapping); + if (write) sb_end_pagefault(inode->i_sb); return ret; } @@ -196,12 +197,12 @@ const struct file_operations ext2_file_operations = { }; const struct inode_operations ext2_file_inode_operations = { -#ifdef CONFIG_EXT2_FS_XATTR .listxattr = ext2_listxattr, -#endif .getattr = ext2_getattr, .setattr = ext2_setattr, .get_acl = ext2_get_acl, .set_acl = ext2_set_acl, .fiemap = ext2_fiemap, + .fileattr_get = ext2_fileattr_get, + .fileattr_set = ext2_fileattr_set, }; |