diff options
Diffstat (limited to 'fs/udf/inode.c')
-rw-r--r-- | fs/udf/inode.c | 59 |
1 files changed, 43 insertions, 16 deletions
diff --git a/fs/udf/inode.c b/fs/udf/inode.c index 287ef9f587b7..df88b957ccf0 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -95,11 +95,33 @@ void udf_evict_inode(struct inode *inode) } } +static void udf_write_failed(struct address_space *mapping, loff_t to) +{ + struct inode *inode = mapping->host; + struct udf_inode_info *iinfo = UDF_I(inode); + loff_t isize = inode->i_size; + + if (to > isize) { + truncate_pagecache(inode, to, isize); + if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) { + down_write(&iinfo->i_data_sem); + udf_truncate_extents(inode); + up_write(&iinfo->i_data_sem); + } + } +} + static int udf_writepage(struct page *page, struct writeback_control *wbc) { return block_write_full_page(page, udf_get_block, wbc); } +static int udf_writepages(struct address_space *mapping, + struct writeback_control *wbc) +{ + return mpage_writepages(mapping, wbc, udf_get_block); +} + static int udf_readpage(struct file *file, struct page *page) { return mpage_readpage(page, udf_get_block); @@ -118,21 +140,24 @@ static int udf_write_begin(struct file *file, struct address_space *mapping, int ret; ret = block_write_begin(mapping, pos, len, flags, pagep, udf_get_block); - if (unlikely(ret)) { - struct inode *inode = mapping->host; - struct udf_inode_info *iinfo = UDF_I(inode); - loff_t isize = inode->i_size; - - if (pos + len > isize) { - truncate_pagecache(inode, pos + len, isize); - if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) { - down_write(&iinfo->i_data_sem); - udf_truncate_extents(inode); - up_write(&iinfo->i_data_sem); - } - } - } + if (unlikely(ret)) + udf_write_failed(mapping, pos + len); + return ret; +} +static ssize_t udf_direct_IO(int rw, struct kiocb *iocb, + const struct iovec *iov, + loff_t offset, unsigned long nr_segs) +{ + struct file *file = iocb->ki_filp; + struct address_space *mapping = file->f_mapping; + struct inode *inode = mapping->host; + ssize_t ret; + + ret = blockdev_direct_IO(rw, iocb, inode, iov, offset, nr_segs, + udf_get_block); + if (unlikely(ret < 0 && (rw & WRITE))) + udf_write_failed(mapping, offset + iov_length(iov, nr_segs)); return ret; } @@ -145,8 +170,10 @@ const struct address_space_operations udf_aops = { .readpage = udf_readpage, .readpages = udf_readpages, .writepage = udf_writepage, - .write_begin = udf_write_begin, - .write_end = generic_write_end, + .writepages = udf_writepages, + .write_begin = udf_write_begin, + .write_end = generic_write_end, + .direct_IO = udf_direct_IO, .bmap = udf_bmap, }; |