+++ /dev/null
- fs/ext3/inode.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
- fs/ext3/super.c | 4 ++
- 2 files changed, 85 insertions(+)
-
---- linux-2.5.73/fs/ext3/inode.c~ext3-san-jdike-2.5.73 2003-06-22 12:32:58.000000000 -0600
-+++ linux-2.5.73-braam/fs/ext3/inode.c 2003-06-30 12:19:21.000000000 -0600
-@@ -2945,3 +2945,84 @@ int ext3_change_inode_journal_flag(struc
-
- return err;
- }
-+
-+/* for each block: 1 ind + 1 dind + 1 tind
-+ * for each block: 3 bitmap blocks
-+ * for each block: 3 group descriptor blocks
-+ * i inode block
-+ * 1 superblock
-+ * 2 * EXT3_SINGLEDATA_TRANS_BLOCKS for the quote files
-+ * ((1+1+1) * 3 * nblocks) + 1 + 1 + 2 * EXT3_SINGLEDATA_TRANS_BLOCKS
-+ *
-+ * XXX assuming:
-+ * (1) fs logic block size == page size
-+ * (2) ext3 in writeback mode
-+ */
-+static inline int ext3_san_write_trans_blocks(int nblocks)
-+{
-+ int ret;
-+
-+ ret = (1 + 1 + 1) * 3 * nblocks + 1 + 1;
-+
-+#ifdef CONFIG_QUOTA
-+ ret += 2 * EXT3_SINGLEDATA_TRANS_BLOCKS;
-+#endif
-+
-+ return ret;
-+}
-+
-+/* Alloc blocks for an inode, while don't create any buffer/page
-+ * for data I/O; set the inode size if file is extended.
-+ *
-+ * @inode: target inode
-+ * @blocks: array of logic block number
-+ * @nblocks: how many blocks need be alloced
-+ * @newsize: new filesize we should set
-+ *
-+ * return: 0 success, otherwise failed
-+ * (*blocks) contains physical block number alloced
-+ *
-+ * XXX this assume the fs block size == page size
-+ */
-+int ext3_prep_san_write(struct inode *inode, long *blocks,
-+ int nblocks, loff_t newsize)
-+{
-+ handle_t *handle;
-+ struct buffer_head bh_tmp;
-+ int needed_blocks;
-+ int i, ret = 0, ret2;
-+
-+ needed_blocks = ext3_san_write_trans_blocks(nblocks);
-+
-+ lock_kernel();
-+ handle = ext3_journal_start(inode, needed_blocks);
-+ if (IS_ERR(handle)) {
-+ unlock_kernel();
-+ return PTR_ERR(handle);
-+ }
-+ unlock_kernel();
-+
-+ /* alloc blocks one by one */
-+ for (i = 0; i < nblocks; i++) {
-+ ret = ext3_get_block_handle(handle, inode, blocks[i],
-+ &bh_tmp, 1, 1);
-+ if (ret)
-+ break;
-+
-+ blocks[i] = bh_tmp.b_blocknr;
-+ }
-+
-+ /* set inode size if needed */
-+ if (!ret && (newsize > inode->i_size)) {
-+ inode->i_size = newsize;
-+ ext3_mark_inode_dirty(handle, inode);
-+ }
-+
-+ lock_kernel();
-+ ret2 = ext3_journal_stop(handle);
-+ unlock_kernel();
-+
-+ if (!ret)
-+ ret = ret2;
-+ return ret;
-+}
---- linux-2.5.73/fs/ext3/super.c~ext3-san-jdike-2.5.73 2003-06-22 12:33:16.000000000 -0600
-+++ linux-2.5.73-braam/fs/ext3/super.c 2003-06-30 12:16:36.000000000 -0600
-@@ -2080,6 +2080,10 @@ static void __exit exit_ext3_fs(void)
- exit_ext3_xattr();
- }
-
-+int ext3_prep_san_write(struct inode *inode, long *blocks,
-+ int nblocks, loff_t newsize);
-+EXPORT_SYMBOL(ext3_prep_san_write);
-+
- MODULE_AUTHOR("Remy Card, Stephen Tweedie, Andrew Morton, Andreas Dilger, Theodore Ts'o and others");
- MODULE_DESCRIPTION("Second Extended Filesystem with journaling extensions");
- MODULE_LICENSE("GPL");
-
-_
git://git.whamcloud.com / fs / lustre-release.git / commitdiff