diff options
Diffstat (limited to 'fs/fuse/inode.c')
| -rw-r--r-- | fs/fuse/inode.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 00bb5a255ded..2167fc4fcab8 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -117,12 +117,22 @@ static void fuse_truncate(struct address_space *mapping, loff_t offset) unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1); } -void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr) + +void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr, + u64 attr_valid, u64 attr_version) { struct fuse_conn *fc = get_fuse_conn(inode); struct fuse_inode *fi = get_fuse_inode(inode); loff_t oldsize; + spin_lock(&fc->lock); + if (attr_version != 0 && fi->attr_version > attr_version) { + spin_unlock(&fc->lock); + return; + } + fi->attr_version = ++fc->attr_version; + fi->i_time = attr_valid; + inode->i_ino = attr->ino; inode->i_mode = (inode->i_mode & S_IFMT) | (attr->mode & 07777); inode->i_nlink = attr->nlink; @@ -145,7 +155,6 @@ void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr) if (!(fc->flags & FUSE_DEFAULT_PERMISSIONS)) inode->i_mode &= ~S_ISVTX; - spin_lock(&fc->lock); oldsize = inode->i_size; i_size_write(inode, attr->size); spin_unlock(&fc->lock); @@ -194,7 +203,8 @@ static int fuse_inode_set(struct inode *inode, void *_nodeidp) } struct inode *fuse_iget(struct super_block *sb, unsigned long nodeid, - int generation, struct fuse_attr *attr) + int generation, struct fuse_attr *attr, + u64 attr_valid, u64 attr_version) { struct inode *inode; struct fuse_inode *fi; @@ -222,7 +232,8 @@ struct inode *fuse_iget(struct super_block *sb, unsigned long nodeid, spin_lock(&fc->lock); fi->nlookup ++; spin_unlock(&fc->lock); - fuse_change_attributes(inode, attr); + fuse_change_attributes(inode, attr, attr_valid, attr_version); + return inode; } @@ -457,6 +468,7 @@ static struct fuse_conn *new_conn(void) } fc->reqctr = 0; fc->blocked = 1; + fc->attr_version = 1; get_random_bytes(&fc->scramble_key, sizeof(fc->scramble_key)); } out: @@ -488,7 +500,7 @@ static struct inode *get_root_inode(struct super_block *sb, unsigned mode) attr.mode = mode; attr.ino = FUSE_ROOT_ID; attr.nlink = 1; - return fuse_iget(sb, 1, 0, &attr); + return fuse_iget(sb, 1, 0, &attr, 0, 0); } static const struct super_operations fuse_super_operations = { |