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-rw-r--r--fs/ext3/balloc.c7
-rw-r--r--fs/ext3/bitmap.c2
-rw-r--r--fs/ext3/bitmap.h8
-rw-r--r--fs/ext3/ialloc.c3
-rw-r--r--fs/ext3/inode.c11
-rw-r--r--fs/ext3/namei.c2
-rw-r--r--fs/ext3/namei.h8
-rw-r--r--fs/ext3/resize.c10
-rw-r--r--fs/ext3/super.c4
-rw-r--r--fs/ext3/xattr.c8
10 files changed, 50 insertions, 13 deletions
diff --git a/fs/ext3/balloc.c b/fs/ext3/balloc.c
index 0213db4911a..7992d21e0e0 100644
--- a/fs/ext3/balloc.c
+++ b/fs/ext3/balloc.c
@@ -20,6 +20,8 @@
#include <linux/quotaops.h>
#include <linux/buffer_head.h>
+#include "bitmap.h"
+
/*
* balloc.c contains the blocks allocation and deallocation routines
*/
@@ -1010,7 +1012,7 @@ retry:
* allocation within the reservation window.
*
* This will avoid keeping on searching the reservation list again and
- * again when someboday is looking for a free block (without
+ * again when somebody is looking for a free block (without
* reservation), and there are lots of free blocks, but they are all
* being reserved.
*
@@ -1416,12 +1418,12 @@ unsigned long ext3_count_free_blocks(struct super_block *sb)
unsigned long bitmap_count, x;
struct buffer_head *bitmap_bh = NULL;
- lock_super(sb);
es = EXT3_SB(sb)->s_es;
desc_count = 0;
bitmap_count = 0;
gdp = NULL;
+ smp_rmb();
for (i = 0; i < ngroups; i++) {
gdp = ext3_get_group_desc(sb, i, NULL);
if (!gdp)
@@ -1440,7 +1442,6 @@ unsigned long ext3_count_free_blocks(struct super_block *sb)
brelse(bitmap_bh);
printk("ext3_count_free_blocks: stored = %u, computed = %lu, %lu\n",
le32_to_cpu(es->s_free_blocks_count), desc_count, bitmap_count);
- unlock_super(sb);
return bitmap_count;
#else
desc_count = 0;
diff --git a/fs/ext3/bitmap.c b/fs/ext3/bitmap.c
index 6c419b9ab0e..5b4ba3e246e 100644
--- a/fs/ext3/bitmap.c
+++ b/fs/ext3/bitmap.c
@@ -8,7 +8,7 @@
*/
#include <linux/buffer_head.h>
-
+#include "bitmap.h"
static int nibblemap[] = {4, 3, 3, 2, 3, 2, 2, 1, 3, 2, 2, 1, 2, 1, 1, 0};
diff --git a/fs/ext3/bitmap.h b/fs/ext3/bitmap.h
new file mode 100644
index 00000000000..6ee503a6bb4
--- /dev/null
+++ b/fs/ext3/bitmap.h
@@ -0,0 +1,8 @@
+/* linux/fs/ext3/bitmap.c
+ *
+ * Copyright (C) 2005 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+*/
+
+extern unsigned long ext3_count_free (struct buffer_head *, unsigned int );
diff --git a/fs/ext3/ialloc.c b/fs/ext3/ialloc.c
index 6549945f9ac..df3f517c54a 100644
--- a/fs/ext3/ialloc.c
+++ b/fs/ext3/ialloc.c
@@ -26,6 +26,7 @@
#include <asm/byteorder.h>
+#include "bitmap.h"
#include "xattr.h"
#include "acl.h"
@@ -704,7 +705,6 @@ unsigned long ext3_count_free_inodes (struct super_block * sb)
unsigned long bitmap_count, x;
struct buffer_head *bitmap_bh = NULL;
- lock_super (sb);
es = EXT3_SB(sb)->s_es;
desc_count = 0;
bitmap_count = 0;
@@ -727,7 +727,6 @@ unsigned long ext3_count_free_inodes (struct super_block * sb)
brelse(bitmap_bh);
printk("ext3_count_free_inodes: stored = %u, computed = %lu, %lu\n",
le32_to_cpu(es->s_free_inodes_count), desc_count, bitmap_count);
- unlock_super(sb);
return desc_count;
#else
desc_count = 0;
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 8b38f223279..5d9b00e2883 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -491,7 +491,7 @@ static unsigned long ext3_find_goal(struct inode *inode, long block,
* the same format as ext3_get_branch() would do. We are calling it after
* we had read the existing part of chain and partial points to the last
* triple of that (one with zero ->key). Upon the exit we have the same
- * picture as after the successful ext3_get_block(), excpet that in one
+ * picture as after the successful ext3_get_block(), except that in one
* place chain is disconnected - *branch->p is still zero (we did not
* set the last link), but branch->key contains the number that should
* be placed into *branch->p to fill that gap.
@@ -523,7 +523,6 @@ static int ext3_alloc_branch(handle_t *handle, struct inode *inode,
if (!nr)
break;
branch[n].key = cpu_to_le32(nr);
- keys = n+1;
/*
* Get buffer_head for parent block, zero it out
@@ -531,6 +530,9 @@ static int ext3_alloc_branch(handle_t *handle, struct inode *inode,
* parent to disk.
*/
bh = sb_getblk(inode->i_sb, parent);
+ if (!bh)
+ break;
+ keys = n+1;
branch[n].bh = bh;
lock_buffer(bh);
BUFFER_TRACE(bh, "call get_create_access");
@@ -864,6 +866,10 @@ struct buffer_head *ext3_getblk(handle_t *handle, struct inode * inode,
if (!*errp && buffer_mapped(&dummy)) {
struct buffer_head *bh;
bh = sb_getblk(inode->i_sb, dummy.b_blocknr);
+ if (!bh) {
+ *errp = -EIO;
+ goto err;
+ }
if (buffer_new(&dummy)) {
J_ASSERT(create != 0);
J_ASSERT(handle != 0);
@@ -896,6 +902,7 @@ struct buffer_head *ext3_getblk(handle_t *handle, struct inode * inode,
}
return bh;
}
+err:
return NULL;
}
diff --git a/fs/ext3/namei.c b/fs/ext3/namei.c
index 50378d8ff84..b3c690a3b54 100644
--- a/fs/ext3/namei.c
+++ b/fs/ext3/namei.c
@@ -36,6 +36,8 @@
#include <linux/quotaops.h>
#include <linux/buffer_head.h>
#include <linux/smp_lock.h>
+
+#include "namei.h"
#include "xattr.h"
#include "acl.h"
diff --git a/fs/ext3/namei.h b/fs/ext3/namei.h
new file mode 100644
index 00000000000..f2ce2b0065c
--- /dev/null
+++ b/fs/ext3/namei.h
@@ -0,0 +1,8 @@
+/* linux/fs/ext3/namei.h
+ *
+ * Copyright (C) 2005 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+*/
+
+extern struct dentry *ext3_get_parent(struct dentry *child);
diff --git a/fs/ext3/resize.c b/fs/ext3/resize.c
index 57f79106267..1be78b4b4de 100644
--- a/fs/ext3/resize.c
+++ b/fs/ext3/resize.c
@@ -118,6 +118,8 @@ static struct buffer_head *bclean(handle_t *handle, struct super_block *sb,
int err;
bh = sb_getblk(sb, blk);
+ if (!bh)
+ return ERR_PTR(-EIO);
if ((err = ext3_journal_get_write_access(handle, bh))) {
brelse(bh);
bh = ERR_PTR(err);
@@ -202,6 +204,10 @@ static int setup_new_group_blocks(struct super_block *sb,
ext3_debug("update backup group %#04lx (+%d)\n", block, bit);
gdb = sb_getblk(sb, block);
+ if (!gdb) {
+ err = -EIO;
+ goto exit_bh;
+ }
if ((err = ext3_journal_get_write_access(handle, gdb))) {
brelse(gdb);
goto exit_bh;
@@ -643,6 +649,10 @@ static void update_backups(struct super_block *sb,
break;
bh = sb_getblk(sb, group * bpg + blk_off);
+ if (!bh) {
+ err = -EIO;
+ break;
+ }
ext3_debug("update metadata backup %#04lx\n",
(unsigned long)bh->b_blocknr);
if ((err = ext3_journal_get_write_access(handle, bh)))
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 097383c1115..f594989ccb7 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -36,9 +36,12 @@
#include <linux/namei.h>
#include <linux/quotaops.h>
#include <linux/seq_file.h>
+
#include <asm/uaccess.h>
+
#include "xattr.h"
#include "acl.h"
+#include "namei.h"
static int ext3_load_journal(struct super_block *, struct ext3_super_block *);
static int ext3_create_journal(struct super_block *, struct ext3_super_block *,
@@ -615,7 +618,6 @@ static struct super_operations ext3_sops = {
#endif
};
-struct dentry *ext3_get_parent(struct dentry *child);
static struct export_operations ext3_export_ops = {
.get_parent = ext3_get_parent,
};
diff --git a/fs/ext3/xattr.c b/fs/ext3/xattr.c
index 269c7b92db9..430de9f63be 100644
--- a/fs/ext3/xattr.c
+++ b/fs/ext3/xattr.c
@@ -210,7 +210,7 @@ ext3_xattr_find_entry(struct ext3_xattr_entry **pentry, int name_index,
return cmp ? -ENODATA : 0;
}
-int
+static int
ext3_xattr_block_get(struct inode *inode, int name_index, const char *name,
void *buffer, size_t buffer_size)
{
@@ -354,7 +354,7 @@ ext3_xattr_list_entries(struct inode *inode, struct ext3_xattr_entry *entry,
return buffer_size - rest;
}
-int
+static int
ext3_xattr_block_list(struct inode *inode, char *buffer, size_t buffer_size)
{
struct buffer_head *bh = NULL;
@@ -626,7 +626,7 @@ struct ext3_xattr_block_find {
struct buffer_head *bh;
};
-int
+static int
ext3_xattr_block_find(struct inode *inode, struct ext3_xattr_info *i,
struct ext3_xattr_block_find *bs)
{
@@ -859,7 +859,7 @@ struct ext3_xattr_ibody_find {
struct ext3_iloc iloc;
};
-int
+static int
ext3_xattr_ibody_find(struct inode *inode, struct ext3_xattr_info *i,
struct ext3_xattr_ibody_find *is)
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-15 14:21:08 +0000