From eafdc7d190a944c755a9fe68573c193e6e0217e7 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 4 Jun 2010 11:29:53 +0200 Subject: sort out blockdev_direct_IO variants Move the call to vmtruncate to get rid of accessive blocks to the callers in prepearation of the new truncate calling sequence. This was only done for DIO_LOCKING filesystems, so the __blockdev_direct_IO_newtrunc variant was not needed anyway. Get rid of blockdev_direct_IO_no_locking and its _newtrunc variant while at it as just opencoding the two additional paramters is shorted than the name suffix. Signed-off-by: Christoph Hellwig Signed-off-by: Al Viro --- fs/hfs/inode.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) (limited to 'fs/hfs/inode.c') diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c index 14f5cb1b9fdc..07b2464b5716 100644 --- a/fs/hfs/inode.c +++ b/fs/hfs/inode.c @@ -112,9 +112,24 @@ 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, -- cgit v1.2.2 From 282dc178849882289d30e58b54be6b2799b351aa Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 4 Jun 2010 11:29:55 +0200 Subject: get rid of cont_write_begin_newtrunc Move the call to vmtruncate to get rid of accessive blocks to the callers in preparation of the new truncate sequence and rename the non-truncating version to cont_write_begin. Signed-off-by: Christoph Hellwig Signed-off-by: Al Viro --- fs/hfs/inode.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'fs/hfs/inode.c') diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c index 07b2464b5716..8df18e63eb6b 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) -- cgit v1.2.2 From 1025774ce411f2bd4b059ad7b53f0003569b74fa Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 4 Jun 2010 11:30:02 +0200 Subject: remove inode_setattr Replace inode_setattr with opencoded variants of it in all callers. This moves the remaining call to vmtruncate into the filesystem methods where it can be replaced with the proper truncate sequence. In a few cases it was obvious that we would never end up calling vmtruncate so it was left out in the opencoded variant: spufs: explicitly checks for ATTR_SIZE earlier btrfs,hugetlbfs,logfs,dlmfs: explicitly clears ATTR_SIZE earlier ufs: contains an opencoded simple_seattr + truncate that sets the filesize just above In addition to that ncpfs called inode_setattr with handcrafted iattrs, which allowed to trim down the opencoded variant. Signed-off-by: Christoph Hellwig Signed-off-by: Al Viro --- fs/hfs/inode.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'fs/hfs/inode.c') diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c index 8df18e63eb6b..87de671baa83 100644 --- a/fs/hfs/inode.c +++ b/fs/hfs/inode.c @@ -612,10 +612,16 @@ 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; } -- cgit v1.2.2 From b5fc510c48f631882ccec3c0f02a25d5b67de09f Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 4 Jul 2010 12:24:09 +0400 Subject: get rid of file_fsync() Copy and simplify in the only two users remaining. Signed-off-by: Al Viro --- fs/hfs/inode.c | 26 +++++++++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) (limited to 'fs/hfs/inode.c') diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c index 87de671baa83..93ceec8fbb8f 100644 --- a/fs/hfs/inode.c +++ b/fs/hfs/inode.c @@ -625,6 +625,30 @@ int hfs_inode_setattr(struct dentry *dentry, struct iattr * attr) 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, @@ -634,7 +658,7 @@ 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, }; -- cgit v1.2.2 From b57922d97fd6f79b6dbe6db0c4fd30d219fa08c1 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 7 Jun 2010 14:34:48 -0400 Subject: convert remaining ->clear_inode() to ->evict_inode() Signed-off-by: Al Viro --- fs/hfs/inode.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'fs/hfs/inode.c') diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c index 93ceec8fbb8f..397b7adc7ce6 100644 --- a/fs/hfs/inode.c +++ b/fs/hfs/inode.c @@ -531,8 +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); -- cgit v1.2.2