diff options
Diffstat (limited to 'fs/fuse/inode.c')
| -rw-r--r-- | fs/fuse/inode.c | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 95c8a9738ca..b584de33a6a 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -109,20 +109,24 @@ static int fuse_remount_fs(struct super_block *sb, int *flags, char *data) return 0; } +static void fuse_truncate(struct address_space *mapping, loff_t offset) +{ + /* See vmtruncate() */ + unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1); + truncate_inode_pages(mapping, offset); + unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1); +} + void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr) { struct fuse_conn *fc = get_fuse_conn(inode); - if (S_ISREG(inode->i_mode) && i_size_read(inode) != attr->size) - invalidate_mapping_pages(inode->i_mapping, 0, -1); + loff_t oldsize; inode->i_ino = attr->ino; inode->i_mode = (inode->i_mode & S_IFMT) + (attr->mode & 07777); inode->i_nlink = attr->nlink; inode->i_uid = attr->uid; inode->i_gid = attr->gid; - spin_lock(&fc->lock); - i_size_write(inode, attr->size); - spin_unlock(&fc->lock); inode->i_blocks = attr->blocks; inode->i_atime.tv_sec = attr->atime; inode->i_atime.tv_nsec = attr->atimensec; @@ -130,6 +134,17 @@ void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr) inode->i_mtime.tv_nsec = attr->mtimensec; inode->i_ctime.tv_sec = attr->ctime; inode->i_ctime.tv_nsec = attr->ctimensec; + + spin_lock(&fc->lock); + oldsize = inode->i_size; + i_size_write(inode, attr->size); + spin_unlock(&fc->lock); + + if (S_ISREG(inode->i_mode) && oldsize != attr->size) { + if (attr->size < oldsize) + fuse_truncate(inode->i_mapping, attr->size); + invalidate_mapping_pages(inode->i_mapping, 0, -1); + } } static void fuse_init_inode(struct inode *inode, struct fuse_attr *attr) |