lkml.org 
[lkml]   [2005]   [Jul]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patches in this message
/
From
Date
Subject[PATCH 2.6.13-rc2-mm2 7/7] v9fs: debug and support routines (2.0.2)
This is part [7/7] of the v9fs-2.0.2 patch against Linux 2.6.13-rc2-mm2.

This part of the patch contains debug and other misc routine changes related
to hch's comments.

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

----------
fs/9p/error.c | 3 +--
fs/9p/error.h | 3 +++
fs/9p/fid.c | 14 ++++++++++----
fs/9p/idpool.c | 152 ----------------------------------------------------
fs/9p/idpool.h | 42 --------------
6 files changed, 14 insertions(+), 200 deletions(-)
----------
--- a/fs/9p/error.h
+++ b/fs/9p/error.h
@@ -172,3 +172,6 @@ static struct errormap errmap[] = {
{"u9fs authnone: no authentication required", 0},
{NULL, -1}
};
+
+extern int v9fs_error_init(void);
+extern int v9fs_errstr2errno(char *errstr);
diff --git a/fs/9p/fid.c b/fs/9p/fid.c
--- a/fs/9p/error.c
+++ b/fs/9p/error.c
@@ -75,8 +75,7 @@ int v9fs_errstr2errno(char *errstr)
struct errormap *c = NULL;
int bucket = jhash(errstr, strlen(errstr), 0) % ERRHASHSZ;

- hlist_for_each(p, &hash_errmap[bucket]) {
- c = hlist_entry(p, struct errormap, list);
+ hlist_for_each_entry(c, p, &hash_errmap[bucket], list) {
if (!strcmp(c->name, errstr)) {
errno = c->val;
break;
diff --git a/fs/9p/error.h b/fs/9p/error.h
--- a/fs/9p/fid.c
+++ b/fs/9p/fid.c
@@ -25,9 +25,9 @@
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/fs.h>
+#include <linux/idr.h>

#include "debug.h"
-#include "idpool.h"
#include "v9fs.h"
#include "9p.h"
#include "v9fs_vfs.h"
@@ -123,7 +123,7 @@ struct v9fs_fid *v9fs_fid_lookup(struct
{
struct list_head *fid_list = (struct list_head *)dentry->d_fsdata;
struct v9fs_fid *current_fid = NULL;
- struct list_head *p, *temp;
+ struct v9fs_fid *temp = NULL;
struct v9fs_fid *return_fid = NULL;
int found_parent = 0;
int found_user = 0;
@@ -132,8 +132,7 @@ struct v9fs_fid *v9fs_fid_lookup(struct
type);

if (fid_list && !list_empty(fid_list)) {
- list_for_each_safe(p, temp, fid_list) {
- current_fid = list_entry(p, struct v9fs_fid, list);
+ list_for_each_entry_safe(current_fid, temp, fid_list, list) {
if (current_fid->uid == current->uid) {
if (return_fid == NULL) {
if ((type == FID_OP)
@@ -205,7 +204,14 @@ struct v9fs_fid *v9fs_fid_lookup(struct
oldfid = current_fid->fid;
par = current->fs->pwd;
/* TODO: take advantage of multiwalk */
+
fidnum = v9fs_get_idpool(&v9ses->fidpool);
+ if(fidnum < 0) {
+ dprintk(DEBUG_ERROR,
+ "could not get a new fid num\n");
+ return return_fid;
+ }
+
while (par != dentry) {
result =
v9fs_t_walk(v9ses, oldfid, fidnum, "..",
diff --git a/fs/9p/idpool.c b/fs/9p/idpool.c
deleted file mode 100644
--- a/fs/9p/idpool.c
+++ /dev/null
@@ -1,152 +0,0 @@
-/*
- * linux/fs/9p/idpool.c
- *
- * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
- * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to:
- * Free Software Foundation
- * 51 Franklin Street, Fifth Floor
- * Boston, MA 02111-1301 USA
- *
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <asm/semaphore.h>
-#include <linux/config.h>
-#include "idpool.h"
-#include "debug.h"
-
-/**
- * grow_idpool - increase the size of an id pool
- * @i: pointer to idpool to initialize
- * @size: size (in bits) of idpool
- *
- */
-
-static int grow_idpool(struct idpool *i, int newsize)
-{
- unsigned long *newpool;
-
- newpool = kmalloc((newsize / 8), GFP_KERNEL);
- if (!newpool) {
- eprintk(KERN_WARNING,
- "Couldn't allocate memory to grow idpool\n");
- return 0;
- }
-
- memset(newpool, 0, newsize / 8);
- if (i->idlist) {
- memcpy(newpool, i->idlist, (i->maxalloc) / 8);
- kfree(i->idlist);
- }
-
- i->idlist = newpool;
- i->maxalloc = newsize;
-
- return newsize;
-}
-
-/**
- * v9fs_alloc_idpool - allocate an id pool
- * @i: pointer to idpool to initialize
- * @size: size of idpool
- *
- */
-
-int v9fs_alloc_idpool(struct idpool *i, int size)
-{
- int newsize;
-
- init_MUTEX(&i->sem);
- i->maxalloc = 0;
- i->numalloc = 0;
- i->lastfree = 0;
- i->idlist = NULL;
- newsize = grow_idpool(i, size);
- return newsize;
-}
-
-/**
- * v9fs_free_idpool - deallocate an id pool
- * @i: pointer to idpool to free
- *
- */
-
-void v9fs_free_idpool(struct idpool *i)
-{
- kfree(i->idlist);
-}
-
-/**
- * v9fs_get_idpool - get a new id from the pool
- * @i: pointer to idpool
- *
- */
-
-int v9fs_get_idpool(struct idpool *i)
-{
- int nextbit;
-
- if (down_interruptible(&i->sem) == -EINTR) {
- eprintk(KERN_WARNING, "Interrupted while locking\n");
- return -1;
- }
-
- nextbit = find_next_zero_bit(i->idlist, i->maxalloc, i->lastfree);
- if (nextbit > i->maxalloc) {
- if (grow_idpool(i, i->maxalloc * 2) == 0) {
- up(&i->sem);
- return -1;
- } else {
- nextbit =
- find_next_zero_bit(i->idlist, i->maxalloc,
- i->lastfree);
- }
- }
-
- set_bit(nextbit, i->idlist);
- if (i->lastfree == nextbit)
- i->lastfree = nextbit + 1;
-
- up(&i->sem);
- return nextbit;
-}
-
-/**
- * v9fs_put_idpool - get a new id from the pool
- * @which: which id to put
- * @i: pointer to idpool
- *
- */
-
-void v9fs_put_idpool(int which, struct idpool *i)
-{
- if ((which < 0) || (which > i->maxalloc)) {
- return;
- }
-
- if (down_interruptible(&i->sem) == -EINTR) {
- eprintk(KERN_WARNING, "Interrupted while locking\n");
- return;
- }
-
- clear_bit(which, i->idlist);
- if (which < i->lastfree)
- i->lastfree = which;
-
- up(&i->sem);
-}
diff --git a/fs/9p/idpool.h b/fs/9p/idpool.h
deleted file mode 100644
--- a/fs/9p/idpool.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * linux/fs/9p/idpool.h
- *
- * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
- * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to:
- * Free Software Foundation
- * 51 Franklin Street, Fifth Floor
- * Boston, MA 02111-1301 USA
- *
- */
-
-/*
- * This is for getting unique IDs.
- * 0 means free, non-zero means used.
- *
- */
-
-struct idpool {
- struct semaphore sem;
- int maxalloc;
- int numalloc;
- int lastfree;
- unsigned long *idlist;
-};
-
-int v9fs_alloc_idpool(struct idpool *, int);
-void v9fs_free_idpool(struct idpool *);
-int v9fs_get_idpool(struct idpool *i);
-void v9fs_put_idpool(int which, struct idpool *i);
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
\
 
 \ /
  Last update: 2005-07-14 21:03    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site