diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/fuse/dir.c | 46 | ||||
| -rw-r--r-- | fs/fuse/inode.c | 25 |
2 files changed, 33 insertions, 38 deletions
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index 35e5cabb3b8..29fef75f236 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -980,23 +980,6 @@ static void iattr_to_fattr(struct iattr *iattr, struct fuse_setattr_in *arg) } } -static void fuse_vmtruncate(struct inode *inode, loff_t offset) -{ - struct fuse_conn *fc = get_fuse_conn(inode); - int need_trunc; - - spin_lock(&fc->lock); - need_trunc = inode->i_size > offset; - i_size_write(inode, offset); - spin_unlock(&fc->lock); - - if (need_trunc) { - struct address_space *mapping = inode->i_mapping; - unmap_mapping_range(mapping, offset + PAGE_SIZE - 1, 0, 1); - truncate_inode_pages(mapping, offset); - } -} - /* * Set attributes, and at the same time refresh them. * @@ -1014,7 +997,6 @@ static int fuse_setattr(struct dentry *entry, struct iattr *attr) struct fuse_setattr_in inarg; struct fuse_attr_out outarg; int err; - int is_truncate = 0; if (fc->flags & FUSE_DEFAULT_PERMISSIONS) { err = inode_change_ok(inode, attr); @@ -1024,7 +1006,6 @@ static int fuse_setattr(struct dentry *entry, struct iattr *attr) if (attr->ia_valid & ATTR_SIZE) { unsigned long limit; - is_truncate = 1; if (IS_SWAPFILE(inode)) return -ETXTBSY; limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur; @@ -1051,21 +1032,20 @@ static int fuse_setattr(struct dentry *entry, struct iattr *attr) request_send(fc, req); err = req->out.h.error; fuse_put_request(fc, req); - if (!err) { - if ((inode->i_mode ^ outarg.attr.mode) & S_IFMT) { - make_bad_inode(inode); - err = -EIO; - } else { - if (is_truncate) - fuse_vmtruncate(inode, outarg.attr.size); - fuse_change_attributes(inode, &outarg.attr); - fi->i_time = time_to_jiffies(outarg.attr_valid, - outarg.attr_valid_nsec); - } - } else if (err == -EINTR) - fuse_invalidate_attr(inode); + if (err) { + if (err == -EINTR) + fuse_invalidate_attr(inode); + return err; + } - return err; + if ((inode->i_mode ^ outarg.attr.mode) & S_IFMT) { + make_bad_inode(inode); + return -EIO; + } + + fuse_change_attributes(inode, &outarg.attr); + fi->i_time = time_to_jiffies(outarg.attr_valid, outarg.attr_valid_nsec); + return 0; } static int fuse_getattr(struct vfsmount *mnt, struct dentry *entry, 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) |