diff options
Diffstat (limited to 'fs/hfs')
| -rw-r--r-- | fs/hfs/hfs_fs.h | 2 | ||||
| -rw-r--r-- | fs/hfs/inode.c | 70 | ||||
| -rw-r--r-- | fs/hfs/super.c | 2 |
3 files changed, 65 insertions, 9 deletions
diff --git a/fs/hfs/hfs_fs.h b/fs/hfs/hfs_fs.h index fe35e3b626c..4f55651aaa5 100644 --- a/fs/hfs/hfs_fs.h +++ b/fs/hfs/hfs_fs.h @@ -193,7 +193,7 @@ extern int hfs_inode_setattr(struct dentry *, struct iattr *); extern void hfs_inode_read_fork(struct inode *inode, struct hfs_extent *ext, __be32 log_size, __be32 phys_size, u32 clump_size); extern struct inode *hfs_iget(struct super_block *, struct hfs_cat_key *, hfs_cat_rec *); -extern void hfs_clear_inode(struct inode *); +extern void hfs_evict_inode(struct inode *); extern void hfs_delete_inode(struct inode *); /* attr.c */ diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c index 14f5cb1b9fd..397b7adc7ce 100644 --- a/fs/hfs/inode.c +++ b/fs/hfs/inode.c @@ -39,10 +39,19 @@ static int hfs_write_begin(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, unsigned flags, struct page **pagep, void **fsdata) { + int ret; + *pagep = NULL; - return cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata, + ret = cont_write_begin(file, mapping, pos, len, flags, pagep, fsdata, hfs_get_block, &HFS_I(mapping->host)->phys_size); + if (unlikely(ret)) { + loff_t isize = mapping->host->i_size; + if (pos + len > isize) + vmtruncate(mapping->host, isize); + } + + return ret; } static sector_t hfs_bmap(struct address_space *mapping, sector_t block) @@ -112,9 +121,24 @@ static ssize_t hfs_direct_IO(int rw, struct kiocb *iocb, { struct file *file = iocb->ki_filp; struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host; + ssize_t ret; - return blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov, + ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov, offset, nr_segs, hfs_get_block, NULL); + + /* + * In case of error extending write may have instantiated a few + * blocks outside i_size. Trim these off again. + */ + if (unlikely((rw & WRITE) && ret < 0)) { + loff_t isize = i_size_read(inode); + loff_t end = offset + iov_length(iov, nr_segs); + + if (end > isize) + vmtruncate(inode, isize); + } + + return ret; } static int hfs_writepages(struct address_space *mapping, @@ -507,8 +531,10 @@ out: return NULL; } -void hfs_clear_inode(struct inode *inode) +void hfs_evict_inode(struct inode *inode) { + truncate_inode_pages(&inode->i_data, 0); + end_writeback(inode); if (HFS_IS_RSRC(inode) && HFS_I(inode)->rsrc_inode) { HFS_I(HFS_I(inode)->rsrc_inode)->rsrc_inode = NULL; iput(HFS_I(inode)->rsrc_inode); @@ -588,13 +614,43 @@ int hfs_inode_setattr(struct dentry *dentry, struct iattr * attr) attr->ia_mode = inode->i_mode & ~S_IWUGO; attr->ia_mode &= S_ISDIR(inode->i_mode) ? ~hsb->s_dir_umask: ~hsb->s_file_umask; } - error = inode_setattr(inode, attr); - if (error) - return error; + if ((attr->ia_valid & ATTR_SIZE) && + attr->ia_size != i_size_read(inode)) { + error = vmtruncate(inode, attr->ia_size); + if (error) + return error; + } + + setattr_copy(inode, attr); + mark_inode_dirty(inode); return 0; } +static int hfs_file_fsync(struct file *filp, int datasync) +{ + struct inode *inode = filp->f_mapping->host; + struct super_block * sb; + int ret, err; + + /* sync the inode to buffers */ + ret = write_inode_now(inode, 0); + + /* sync the superblock to buffers */ + sb = inode->i_sb; + if (sb->s_dirt) { + lock_super(sb); + sb->s_dirt = 0; + if (!(sb->s_flags & MS_RDONLY)) + hfs_mdb_commit(sb); + unlock_super(sb); + } + /* .. finally sync the buffers to disk */ + err = sync_blockdev(sb->s_bdev); + if (!ret) + ret = err; + return ret; +} static const struct file_operations hfs_file_operations = { .llseek = generic_file_llseek, @@ -604,7 +660,7 @@ static const struct file_operations hfs_file_operations = { .aio_write = generic_file_aio_write, .mmap = generic_file_mmap, .splice_read = generic_file_splice_read, - .fsync = file_fsync, + .fsync = hfs_file_fsync, .open = hfs_file_open, .release = hfs_file_release, }; diff --git a/fs/hfs/super.c b/fs/hfs/super.c index 0a81eb7111f..34235d4bf08 100644 --- a/fs/hfs/super.c +++ b/fs/hfs/super.c @@ -181,7 +181,7 @@ static const struct super_operations hfs_super_operations = { .alloc_inode = hfs_alloc_inode, .destroy_inode = hfs_destroy_inode, .write_inode = hfs_write_inode, - .clear_inode = hfs_clear_inode, + .evict_inode = hfs_evict_inode, .put_super = hfs_put_super, .write_super = hfs_write_super, .sync_fs = hfs_sync_fs, |