return 0;
}
- /* utility function that does setup for reiserfs_new_inode.
+ /* utility function that does setup for reiserfs_new_inode.
-** DQUOT_INIT needs lots of credits so it's better to have it
+** vfs_dq_init needs lots of credits so it's better to have it
** outside of a transaction, so we had to pull some bits of
** reiserfs_new_inode out into this func.
*/
do_balance(&s_del_balance, NULL, NULL, M_DELETE);
#ifdef REISERQUOTA_DEBUG
- reiserfs_debug(p_s_sb, REISERFS_DEBUG_CODE,
+ reiserfs_debug(sb, REISERFS_DEBUG_CODE,
"reiserquota delete_item(): freeing %u, id=%u type=%c",
- quota_cut_bytes, p_s_inode->i_uid, head2type(&s_ih));
+ quota_cut_bytes, inode->i_uid, head2type(&s_ih));
#endif
- vfs_dq_free_space_nodirty(p_s_inode, quota_cut_bytes);
- DQUOT_FREE_SPACE_NODIRTY(inode, quota_cut_bytes);
++ vfs_dq_free_space_nodirty(inode, quota_cut_bytes);
/* Return deleted body length */
- return n_ret_value;
+ return ret_value;
}
/* Summary Of Mechanisms For Handling Collisions Between Processes:
** unmap and invalidate it
*/
unmap_buffers(page, tail_pos);
- REISERFS_I(p_s_inode)->i_flags &= ~i_pack_on_close_mask;
+ REISERFS_I(inode)->i_flags &= ~i_pack_on_close_mask;
}
#ifdef REISERQUOTA_DEBUG
- reiserfs_debug(p_s_inode->i_sb, REISERFS_DEBUG_CODE,
+ reiserfs_debug(inode->i_sb, REISERFS_DEBUG_CODE,
"reiserquota cut_from_item(): freeing %u id=%u type=%c",
- quota_cut_bytes, p_s_inode->i_uid, '?');
+ quota_cut_bytes, inode->i_uid, '?');
#endif
- vfs_dq_free_space_nodirty(p_s_inode, quota_cut_bytes);
- return n_ret_value;
- DQUOT_FREE_SPACE_NODIRTY(inode, quota_cut_bytes);
++ vfs_dq_free_space_nodirty(inode, quota_cut_bytes);
+ return ret_value;
}
static void truncate_directory(struct reiserfs_transaction_handle *th,
#ifdef REISERQUOTA_DEBUG
reiserfs_debug(inode->i_sb, REISERFS_DEBUG_CODE,
"reiserquota paste_into_item(): allocating %u id=%u type=%c",
- n_pasted_size, inode->i_uid,
- key2type(&(p_s_key->on_disk_key)));
+ pasted_size, inode->i_uid,
+ key2type(&(key->on_disk_key)));
#endif
- if (vfs_dq_alloc_space_nodirty(inode, n_pasted_size)) {
- pathrelse(p_s_search_path);
- if (DQUOT_ALLOC_SPACE_NODIRTY(inode, pasted_size)) {
++ if (vfs_dq_alloc_space_nodirty(inode, pasted_size)) {
+ pathrelse(search_path);
return -EDQUOT;
}
- init_tb_struct(th, &s_paste_balance, th->t_super, p_s_search_path,
- n_pasted_size);
+ init_tb_struct(th, &s_paste_balance, th->t_super, search_path,
+ pasted_size);
#ifdef DISPLACE_NEW_PACKING_LOCALITIES
- s_paste_balance.key = p_s_key->on_disk_key;
+ s_paste_balance.key = key->on_disk_key;
#endif
/* DQUOT_* can schedule, must check before the fix_nodes */
#ifdef REISERQUOTA_DEBUG
reiserfs_debug(inode->i_sb, REISERFS_DEBUG_CODE,
"reiserquota paste_into_item(): freeing %u id=%u type=%c",
- n_pasted_size, inode->i_uid,
- key2type(&(p_s_key->on_disk_key)));
+ pasted_size, inode->i_uid,
+ key2type(&(key->on_disk_key)));
#endif
- vfs_dq_free_space_nodirty(inode, n_pasted_size);
- DQUOT_FREE_SPACE_NODIRTY(inode, pasted_size);
++ vfs_dq_free_space_nodirty(inode, pasted_size);
return retval;
}
#endif
/* We can't dirty inode here. It would be immediately written but
* appropriate stat item isn't inserted yet... */
- if (DQUOT_ALLOC_SPACE_NODIRTY(inode, quota_bytes)) {
+ if (vfs_dq_alloc_space_nodirty(inode, quota_bytes)) {
- pathrelse(p_s_path);
+ pathrelse(path);
return -EDQUOT;
}
}
#ifdef REISERQUOTA_DEBUG
reiserfs_debug(th->t_super, REISERFS_DEBUG_CODE,
"reiserquota insert_item(): freeing %u id=%u type=%c",
- quota_bytes, inode->i_uid, head2type(p_s_ih));
+ quota_bytes, inode->i_uid, head2type(ih));
#endif
if (inode)
- DQUOT_FREE_SPACE_NODIRTY(inode, quota_bytes);
+ vfs_dq_free_space_nodirty(inode, quota_bytes);
return retval;
}
#define PRIVROOT_NAME ".reiserfs_priv"
#define XAROOT_NAME "xattrs"
- static struct reiserfs_xattr_handler *find_xattr_handler_prefix(const char
- *prefix);
- /* Returns the dentry referring to the root of the extended attribute
- * directory tree. If it has already been retrieved, it is used. If it
- * hasn't been created and the flags indicate creation is allowed, we
- * attempt to create it. On error, we return a pointer-encoded error.
- */
- static struct dentry *get_xa_root(struct super_block *sb, int flags)
+ /* Helpers for inode ops. We do this so that we don't have all the VFS
+ * overhead and also for proper i_mutex annotation.
+ * dir->i_mutex must be held for all of them. */
+ static int xattr_create(struct inode *dir, struct dentry *dentry, int mode)
{
- struct dentry *privroot = dget(REISERFS_SB(sb)->priv_root);
- struct dentry *xaroot;
+ BUG_ON(!mutex_is_locked(&dir->i_mutex));
- DQUOT_INIT(dir);
++ vfs_dq_init(dir);
+ return dir->i_op->create(dir, dentry, mode, NULL);
+ }
- /* This needs to be created at mount-time */
- if (!privroot)
- return ERR_PTR(-ENODATA);
+ static int xattr_mkdir(struct inode *dir, struct dentry *dentry, int mode)
+ {
+ BUG_ON(!mutex_is_locked(&dir->i_mutex));
- DQUOT_INIT(dir);
++ vfs_dq_init(dir);
+ return dir->i_op->mkdir(dir, dentry, mode);
+ }
- mutex_lock_nested(&privroot->d_inode->i_mutex, I_MUTEX_XATTR);
- if (REISERFS_SB(sb)->xattr_root) {
- xaroot = dget(REISERFS_SB(sb)->xattr_root);
- goto out;
- }
+ /* We use I_MUTEX_CHILD here to silence lockdep. It's safe because xattr
+ * mutation ops aren't called during rename or splace, which are the
+ * only other users of I_MUTEX_CHILD. It violates the ordering, but that's
+ * better than allocating another subclass just for this code. */
+ static int xattr_unlink(struct inode *dir, struct dentry *dentry)
+ {
+ int error;
+ BUG_ON(!mutex_is_locked(&dir->i_mutex));
- DQUOT_INIT(dir);
++ vfs_dq_init(dir);
- xaroot = lookup_one_len(XAROOT_NAME, privroot, strlen(XAROOT_NAME));
- if (IS_ERR(xaroot)) {
- goto out;
- } else if (!xaroot->d_inode) {
+ mutex_lock_nested(&dentry->d_inode->i_mutex, I_MUTEX_CHILD);
+ error = dir->i_op->unlink(dir, dentry);
+ mutex_unlock(&dentry->d_inode->i_mutex);
+
+ if (!error)
+ d_delete(dentry);
+ return error;
+ }
+
+ static int xattr_rmdir(struct inode *dir, struct dentry *dentry)
+ {
+ int error;
+ BUG_ON(!mutex_is_locked(&dir->i_mutex));
- DQUOT_INIT(dir);
++ vfs_dq_init(dir);
+
+ mutex_lock_nested(&dentry->d_inode->i_mutex, I_MUTEX_CHILD);
+ dentry_unhash(dentry);
+ error = dir->i_op->rmdir(dir, dentry);
+ if (!error)
+ dentry->d_inode->i_flags |= S_DEAD;
+ mutex_unlock(&dentry->d_inode->i_mutex);
+ if (!error)
+ d_delete(dentry);
+ dput(dentry);
+
+ return error;
+ }
+
+ #define xattr_may_create(flags) (!flags || flags & XATTR_CREATE)
+
+ /* Returns and possibly creates the xattr dir. */
+ static struct dentry *lookup_or_create_dir(struct dentry *parent,
+ const char *name, int flags)
+ {
+ struct dentry *dentry;
+ BUG_ON(!parent);
+
+ dentry = lookup_one_len(name, parent, strlen(name));
+ if (IS_ERR(dentry))
+ return dentry;
+ else if (!dentry->d_inode) {
int err = -ENODATA;
- if (flags == 0 || flags & XATTR_CREATE)
- err = privroot->d_inode->i_op->mkdir(privroot->d_inode,
- xaroot, 0700);
+
+ if (xattr_may_create(flags)) {
+ mutex_lock_nested(&parent->d_inode->i_mutex,
+ I_MUTEX_XATTR);
+ err = xattr_mkdir(parent->d_inode, dentry, 0700);
+ mutex_unlock(&parent->d_inode->i_mutex);
+ }
+
if (err) {
- dput(xaroot);
- xaroot = ERR_PTR(err);
- goto out;
+ dput(dentry);
+ dentry = ERR_PTR(err);
}
}
- REISERFS_SB(sb)->xattr_root = dget(xaroot);
- out:
- mutex_unlock(&privroot->d_inode->i_mutex);
- dput(privroot);
- return xaroot;
+ return dentry;
+ }
+
+ static struct dentry *open_xa_root(struct super_block *sb, int flags)
+ {
+ struct dentry *privroot = REISERFS_SB(sb)->priv_root;
+ if (!privroot)
+ return ERR_PTR(-ENODATA);
+ return lookup_or_create_dir(privroot, XAROOT_NAME, flags);
}
- /* Opens the directory corresponding to the inode's extended attribute store.
- * If flags allow, the tree to the directory may be created. If creation is
- * prohibited, -ENODATA is returned. */
static struct dentry *open_xa_dir(const struct inode *inode, int flags)
{
struct dentry *xaroot, *xadir;
*
*/
- /* xattr stuff */
- #define REISERFS_XATTR_DIR_SEM(s) (REISERFS_SB(s)->xattr_dir_sem)
+/* ioctl's command */
+#define REISERFS_IOC_UNPACK _IOW(0xCD,1,long)
+/* define following flags to be the same as in ext2, so that chattr(1),
+ lsattr(1) will work with us. */
+#define REISERFS_IOC_GETFLAGS FS_IOC_GETFLAGS
+#define REISERFS_IOC_SETFLAGS FS_IOC_SETFLAGS
+#define REISERFS_IOC_GETVERSION FS_IOC_GETVERSION
+#define REISERFS_IOC_SETVERSION FS_IOC_SETVERSION
+
+#ifdef __KERNEL__
+/* the 32 bit compat definitions with int argument */
+#define REISERFS_IOC32_UNPACK _IOW(0xCD, 1, int)
+#define REISERFS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
+#define REISERFS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
+#define REISERFS_IOC32_GETVERSION FS_IOC32_GETVERSION
+#define REISERFS_IOC32_SETVERSION FS_IOC32_SETVERSION
+
+/* Locking primitives */
+/* Right now we are still falling back to (un)lock_kernel, but eventually that
+ would evolve into real per-fs locks */
+#define reiserfs_write_lock( sb ) lock_kernel()
+#define reiserfs_write_unlock( sb ) unlock_kernel()
+
+struct fid;
+
/* in reading the #defines, it may help to understand that they employ
the following abbreviations:
unsigned int cmd, unsigned long arg);
int reiserfs_unpack(struct inode *inode, struct file *filp);
-/* ioctl's command */
-#define REISERFS_IOC_UNPACK _IOW(0xCD,1,long)
-/* define following flags to be the same as in ext2, so that chattr(1),
- lsattr(1) will work with us. */
-#define REISERFS_IOC_GETFLAGS FS_IOC_GETFLAGS
-#define REISERFS_IOC_SETFLAGS FS_IOC_SETFLAGS
-#define REISERFS_IOC_GETVERSION FS_IOC_GETVERSION
-#define REISERFS_IOC_SETVERSION FS_IOC_SETVERSION
-
-/* the 32 bit compat definitions with int argument */
-#define REISERFS_IOC32_UNPACK _IOW(0xCD, 1, int)
-#define REISERFS_IOC32_GETFLAGS FS_IOC32_GETFLAGS
-#define REISERFS_IOC32_SETFLAGS FS_IOC32_SETFLAGS
-#define REISERFS_IOC32_GETVERSION FS_IOC32_GETVERSION
-#define REISERFS_IOC32_SETVERSION FS_IOC32_SETVERSION
--
-/* Locking primitives */
-/* Right now we are still falling back to (un)lock_kernel, but eventually that
- would evolve into real per-fs locks */
-#define reiserfs_write_lock( sb ) lock_kernel()
-#define reiserfs_write_unlock( sb ) unlock_kernel()
+#endif /* __KERNEL__ */
+
#endif /* _LINUX_REISER_FS_H */
projects / openwrt / staging / blogic.git / commitdiff