[PATCH 1/1] reiserfs:Adding tmpfile support

From: Fabian Frederick
Date: Wed Dec 25 2013 - 08:24:18 EST


This patch is largely based on reiserfs_create function.
-Removing dquot_initialize (cf ext2/tmpfile)
-Removing add_entry code.
-Adding d_tmpfile generic call.

It was not extensively tested; other solutions would
be to work with hidden entries or merge
creation - tmpfile process.

Signed-off-by: Fabian Frederick <fabf@xxxxxxxxx>
---
fs/reiserfs/namei.c | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 60 insertions(+)

diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c
index dc5236f..125060b 100644
--- a/fs/reiserfs/namei.c
+++ b/fs/reiserfs/namei.c
@@ -637,6 +637,65 @@ static int reiserfs_create(struct inode *dir, struct dentry *dentry, umode_t mod
return retval;
}

+
+/* tmpfile function based on reiserfs_create without filename entry
+*/
+
+static int reiserfs_tmpfile(struct inode *dir, struct dentry *dentry,
+ umode_t mode)
+{
+ int retval;
+ struct inode *inode;
+ int jbegin_count =
+ JOURNAL_PER_BALANCE_CNT * 2 +
+ 2 * (REISERFS_QUOTA_INIT_BLOCKS(dir->i_sb) +
+ REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb));
+ struct reiserfs_transaction_handle th;
+ struct reiserfs_security_handle security;
+
+ inode = new_inode(dir->i_sb);
+ if (!inode)
+ return -ENOMEM;
+
+ new_inode_init(inode, dir, mode);
+
+ jbegin_count += reiserfs_cache_default_acl(dir);
+ retval = reiserfs_security_init(dir, inode, &dentry->d_name, &security);
+ if (retval < 0) {
+ drop_new_inode(inode);
+ return retval;
+ }
+ jbegin_count += retval;
+ reiserfs_write_lock(dir->i_sb);
+
+ retval = journal_begin(&th, dir->i_sb, jbegin_count);
+ if (retval) {
+ drop_new_inode(inode);
+ goto out_failed;
+ }
+
+ retval =
+ reiserfs_new_inode(&th, dir, mode, NULL, 0 /*i_size */ , dentry,
+ inode, &security);
+ if (retval)
+ goto out_failed;
+
+ inode->i_op = &reiserfs_file_inode_operations;
+ inode->i_fop = &reiserfs_file_operations;
+ inode->i_mapping->a_ops = &reiserfs_address_space_operations;
+
+ reiserfs_update_inode_transaction(inode);
+ reiserfs_update_inode_transaction(dir);
+
+ unlock_new_inode(inode);
+ d_tmpfile(dentry, inode);
+ retval = journal_end(&th, dir->i_sb, jbegin_count);
+
+ out_failed:
+ reiserfs_write_unlock(dir->i_sb);
+ return retval;
+}
+
static int reiserfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode,
dev_t rdev)
{
@@ -1522,6 +1581,7 @@ const struct inode_operations reiserfs_dir_inode_operations = {
.removexattr = reiserfs_removexattr,
.permission = reiserfs_permission,
.get_acl = reiserfs_get_acl,
+ .tmpfile = reiserfs_tmpfile,
};

/*
--
1.8.1.4
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