A checksum of each group descriptor is used to ensure that corruption in
the group descriptor's bit flags does not cause incorrect operation.
-Index: linux-2.6.9-full/include/linux/ext3_fs.h
+Index: linux-2.6.9-67.0.15/include/linux/ext3_fs.h
===================================================================
---- linux-2.6.9-full.orig/include/linux/ext3_fs.h 2007-03-28 18:35:41.000000000 +0400
-+++ linux-2.6.9-full/include/linux/ext3_fs.h 2007-03-28 18:36:16.000000000 +0400
+--- linux-2.6.9-67.0.15.orig/include/linux/ext3_fs.h
++++ linux-2.6.9-67.0.15/include/linux/ext3_fs.h
@@ -153,16 +153,22 @@ struct ext3_allocation_request {
*/
struct ext3_group_desc
/*
* Macro-instructions used to manage group descriptors
*/
-@@ -572,6 +578,7 @@ static inline struct ext3_inode_info *EX
+@@ -580,6 +586,7 @@ static inline struct ext3_inode_info *EX
#define EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
#define EXT3_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
#define EXT3_FEATURE_RO_COMPAT_BTREE_DIR 0x0004
#define EXT4_FEATURE_RO_COMPAT_DIR_NLINK 0x0020
#define EXT3_FEATURE_INCOMPAT_COMPRESSION 0x0001
-@@ -588,6 +595,7 @@ static inline struct ext3_inode_info *EX
+@@ -596,6 +603,7 @@ static inline struct ext3_inode_info *EX
EXT3_FEATURE_INCOMPAT_EXTENTS)
#define EXT3_FEATURE_RO_COMPAT_SUPP (EXT3_FEATURE_RO_COMPAT_SPARSE_SUPER| \
EXT3_FEATURE_RO_COMPAT_LARGE_FILE| \
EXT4_FEATURE_RO_COMPAT_DIR_NLINK| \
EXT3_FEATURE_RO_COMPAT_BTREE_DIR)
-Index: linux-2.6.9-full/fs/ext3/resize.c
+Index: linux-2.6.9-67.0.15/fs/ext3/resize.c
===================================================================
---- linux-2.6.9-full.orig/fs/ext3/resize.c 2006-03-10 18:20:03.000000000 +0300
-+++ linux-2.6.9-full/fs/ext3/resize.c 2007-03-28 18:36:16.000000000 +0400
+--- linux-2.6.9-67.0.15.orig/fs/ext3/resize.c
++++ linux-2.6.9-67.0.15/fs/ext3/resize.c
@@ -19,6 +19,7 @@
#include <linux/errno.h>
#include <linux/slab.h>
#define outside(b, first, last) ((b) < (first) || (b) >= (last))
#define inside(b, first, last) ((b) >= (first) && (b) < (last))
-@@ -807,6 +808,7 @@ int ext3_group_add(struct super_block *s
+@@ -132,25 +133,6 @@ static struct buffer_head *bclean(handle
+ }
+
+ /*
+- * To avoid calling the atomic setbit hundreds or thousands of times, we only
+- * need to use it within a single byte (to ensure we get endianness right).
+- * We can use memset for the rest of the bitmap as there are no other users.
+- */
+-static void mark_bitmap_end(int start_bit, int end_bit, char *bitmap)
+-{
+- int i;
+-
+- if (start_bit >= end_bit)
+- return;
+-
+- ext3_debug("mark end bits +%d through +%d used\n", start_bit, end_bit);
+- for (i = start_bit; i < ((start_bit + 7) & ~7UL); i++)
+- ext3_set_bit(i, bitmap);
+- if (i < end_bit)
+- memset(bitmap + (i >> 3), 0xff, (end_bit - i) >> 3);
+-}
+-
+-/*
+ * Set up the block and inode bitmaps, and the inode table for the new group.
+ * This doesn't need to be part of the main transaction, since we are only
+ * changing blocks outside the actual filesystem. We still do journaling to
+@@ -807,6 +789,7 @@ int ext3_group_add(struct super_block *s
gdp->bg_inode_table = cpu_to_le32(input->inode_table);
gdp->bg_free_blocks_count = cpu_to_le16(input->free_blocks_count);
gdp->bg_free_inodes_count = cpu_to_le16(EXT3_INODES_PER_GROUP(sb));
/*
* Make the new blocks and inodes valid next. We do this before
-Index: linux-2.6.9-full/fs/ext3/super.c
+Index: linux-2.6.9-67.0.15/fs/ext3/super.c
===================================================================
---- linux-2.6.9-full.orig/fs/ext3/super.c 2007-03-28 18:35:42.000000000 +0400
-+++ linux-2.6.9-full/fs/ext3/super.c 2007-03-28 18:36:16.000000000 +0400
+--- linux-2.6.9-67.0.15.orig/fs/ext3/super.c
++++ linux-2.6.9-67.0.15/fs/ext3/super.c
@@ -38,6 +38,7 @@
#include <asm/uaccess.h>
#include "xattr.h"
#include "acl.h"
+#include "group.h"
- static int ext3_load_journal(struct super_block *, struct ext3_super_block *,
- unsigned long journal_devnum);
-@@ -1090,6 +1091,90 @@ static int ext3_setup_super(struct super
+ static int ext3_load_journal(struct super_block *, struct ext3_super_block *);
+ static int ext3_create_journal(struct super_block *, struct ext3_super_block *,
+@@ -1130,6 +1131,90 @@ static int ext3_setup_super(struct super
return res;
}
/* Called at mount-time, super-block is locked */
static int ext3_check_descriptors (struct super_block * sb)
{
-@@ -1139,6 +1224,13 @@ static int ext3_check_descriptors (struc
+@@ -1179,6 +1264,13 @@ static int ext3_check_descriptors (struc
le32_to_cpu(gdp->bg_inode_table));
return 0;
}
block += EXT3_BLOCKS_PER_GROUP(sb);
gdp++;
}
-Index: linux-2.6.9-full/fs/ext3/group.h
+Index: linux-2.6.9-67.0.15/fs/ext3/group.h
===================================================================
---- linux-2.6.9-full.orig/fs/ext3/group.h 2007-02-13 18:39:59.640066087 +0300
-+++ linux-2.6.9-full/fs/ext3/group.h 2007-03-28 18:36:16.000000000 +0400
-@@ -0,0 +1,29 @@
+--- /dev/null
++++ linux-2.6.9-67.0.15/fs/ext3/group.h
+@@ -0,0 +1,30 @@
+/*
+ * linux/fs/ext3/group.h
+ *
-+ * Copyright (C) 2007 Cluster File Systems, Inc
++ * Copyright 2008 Sun Microsystems, Inc.
+ *
+ * Author: Andreas Dilger <adilger@clusterfs.com>
+ */
+extern unsigned ext3_init_inode_bitmap(struct super_block *sb,
+ struct buffer_head *bh, int group,
+ struct ext3_group_desc *desc);
++extern void mark_bitmap_end(int start_bit, int end_bit, char *bitmap);
+#endif /* _LINUX_EXT3_GROUP_H */
-Index: linux-2.6.9-full/fs/ext3/ialloc.c
+Index: linux-2.6.9-67.0.15/fs/ext3/ialloc.c
===================================================================
---- linux-2.6.9-full.orig/fs/ext3/ialloc.c 2007-03-28 18:35:38.000000000 +0400
-+++ linux-2.6.9-full/fs/ext3/ialloc.c 2007-03-28 18:36:16.000000000 +0400
+--- linux-2.6.9-67.0.15.orig/fs/ext3/ialloc.c
++++ linux-2.6.9-67.0.15/fs/ext3/ialloc.c
@@ -28,6 +28,7 @@
#include "xattr.h"
+ * need to use it within a single byte (to ensure we get endianness right).
+ * We can use memset for the rest of the bitmap as there are no other users.
+ */
-+static void mark_bitmap_end(int start_bit, int end_bit, char *bitmap)
++void mark_bitmap_end(int start_bit, int end_bit, char *bitmap)
+{
+ int i;
+
spin_unlock(sb_bgl_lock(sbi, block_group));
percpu_counter_inc(&sbi->s_freeinodes_counter);
if (is_directory)
-@@ -453,7 +513,7 @@ struct inode *ext3_new_inode(handle_t *h
+@@ -452,7 +512,7 @@ struct inode *ext3_new_inode(handle_t *h
struct ext3_sb_info *sbi;
int err = 0;
struct inode *ret;
/* Cannot create files in a deleted directory */
if (!dir || !dir->i_nlink)
-@@ -566,11 +626,13 @@ repeat_in_this_group:
+@@ -568,11 +628,13 @@ repeat_in_this_group:
goto out;
got:
err = -EIO;
goto fail;
}
-@@ -578,13 +640,65 @@ got:
+@@ -580,13 +642,65 @@ got:
BUFFER_TRACE(bh2, "get_write_access");
err = ext3_journal_get_write_access(handle, bh2);
if (err) goto fail;
spin_unlock(sb_bgl_lock(sbi, group));
BUFFER_TRACE(bh2, "call ext3_journal_dirty_metadata");
err = ext3_journal_dirty_metadata(handle, bh2);
-@@ -606,7 +720,7 @@ got:
+@@ -608,7 +722,7 @@ got:
inode->i_gid = current->fsgid;
inode->i_mode = mode;
/* This is the optimal IO size (for stat), not the fs block size */
inode->i_blksize = PAGE_SIZE;
inode->i_blocks = 0;
-Index: linux-2.6.9-full/fs/ext3/mballoc.c
+Index: linux-2.6.9-67.0.15/fs/ext3/mballoc.c
===================================================================
---- linux-2.6.9-full.orig/fs/ext3/mballoc.c 2007-03-28 15:42:45.000000000 +0400
-+++ linux-2.6.9-full/fs/ext3/mballoc.c 2007-03-28 18:36:16.000000000 +0400
+--- linux-2.6.9-67.0.15.orig/fs/ext3/mballoc.c
++++ linux-2.6.9-67.0.15/fs/ext3/mballoc.c
@@ -36,6 +36,8 @@
#include <linux/seq_file.h>
#include <linux/version.h>
unsigned short bb_first_free;
unsigned short bb_free;
unsigned short bb_fragments;
-@@ -928,10 +931,7 @@ static int ext3_mb_init_cache(struct pag
+@@ -943,10 +946,7 @@ static int ext3_mb_init_cache(struct pag
if (first_group + i >= EXT3_SB(sb)->s_groups_count)
break;
err = -ENOMEM;
bh[i] = sb_getblk(sb, le32_to_cpu(desc->bg_block_bitmap));
-@@ -946,7 +946,12 @@ static int ext3_mb_init_cache(struct pag
+@@ -961,7 +961,12 @@ static int ext3_mb_init_cache(struct pag
unlock_buffer(bh[i]);
continue;
}
get_bh(bh[i]);
bh[i]->b_end_io = end_buffer_read_sync;
submit_bh(READ, bh[i]);
-@@ -1703,6 +1708,10 @@ static int ext3_mb_good_group(struct ext
+@@ -1733,6 +1738,10 @@ static int ext3_mb_good_group(struct ext
switch (cr) {
case 0:
BUG_ON(ac->ac_2order == 0);
bits = ac->ac_sb->s_blocksize_bits + 1;
for (i = ac->ac_2order; i <= bits; i++)
if (grp->bb_counters[i] > 0)
-@@ -1796,7 +1805,9 @@ repeat:
+@@ -1826,7 +1835,9 @@ repeat:
}
ac->ac_groups_scanned++;
ext3_mb_simple_scan_group(ac, &e3b);
else if (cr == 1 && ac->ac_g_ex.fe_len == sbi->s_stripe)
ext3_mb_scan_aligned(ac, &e3b);
-@@ -2267,12 +2278,13 @@ int ext3_mb_init_backend(struct super_bl
+@@ -2306,12 +2317,13 @@ int ext3_mb_init_backend(struct super_bl
i--;
goto err_freebuddy;
}
set_bit(EXT3_GROUP_INFO_NEED_INIT_BIT,
&meta_group_info[j]->bb_state);
-@@ -2936,9 +2948,17 @@ int ext3_mb_mark_diskspace_used(struct e
- mb_set_bits(bitmap_bh->b_data, ac->ac_b_ex.fe_start, ac->ac_b_ex.fe_len);
+@@ -2945,9 +2957,17 @@ int ext3_mb_mark_diskspace_used(struct e
+ mb_set_bits(NULL, bitmap_bh->b_data,
+ ac->ac_b_ex.fe_start, ac->ac_b_ex.fe_len);
- spin_lock(sb_bgl_lock(sbi, ac->ac_b_ex.fe_group));
+ if (gdp->bg_flags & cpu_to_le16(EXT3_BG_BLOCK_UNINIT)) {
+ gdp->bg_flags &= cpu_to_le16(~EXT3_BG_BLOCK_UNINIT);
+ gdp->bg_free_blocks_count =
spin_unlock(sb_bgl_lock(sbi, ac->ac_b_ex.fe_group));
percpu_counter_mod(&sbi->s_freeblocks_counter, - ac->ac_b_ex.fe_len);
-@@ -4303,6 +4323,7 @@ do_more:
+@@ -4357,6 +4377,7 @@ do_more:
spin_lock(sb_bgl_lock(sbi, block_group));
gdp->bg_free_blocks_count =
cpu_to_le16(le16_to_cpu(gdp->bg_free_blocks_count) + count);
spin_unlock(sb_bgl_lock(sbi, block_group));
percpu_counter_mod(&sbi->s_freeblocks_counter, count);
-Index: linux-2.6.9-full/fs/ext3/balloc.c
+Index: linux-2.6.9-67.0.15/fs/ext3/balloc.c
===================================================================
---- linux-2.6.9-full.orig/fs/ext3/balloc.c 2007-03-28 15:45:41.000000000 +0400
-+++ linux-2.6.9-full/fs/ext3/balloc.c 2007-03-28 18:36:16.000000000 +0400
+--- linux-2.6.9-67.0.15.orig/fs/ext3/balloc.c
++++ linux-2.6.9-67.0.15/fs/ext3/balloc.c
@@ -20,6 +20,7 @@
#include <linux/quotaops.h>
#include <linux/buffer_head.h>
/*
* balloc.c contains the blocks allocation and deallocation routines
*/
-@@ -73,6 +74,75 @@ struct ext3_group_desc * ext3_get_group_
+@@ -73,6 +74,83 @@ struct ext3_group_desc * ext3_get_group_
return gdp + desc;
}
+ for (bit = le32_to_cpu(gdp->bg_inode_table) - start,
+ bit_max = bit + sbi->s_itb_per_group; bit < bit_max; bit++)
+ ext3_set_bit(bit, bh->b_data);
++
++ /*
++ * Also if the number of blocks within the group is
++ * less than the blocksize * 8 ( which is the size
++ * of bitmap ), set rest of the block bitmap to 1
++ */
++ mark_bitmap_end(EXT3_BLOCKS_PER_GROUP(sb), sb->s_blocksize * 8,
++ bh->b_data);
+ }
+
+ return free_blocks - sbi->s_itb_per_group - 2;
/*
* Read the bitmap for a given block_group, reading into the specified
* slot in the superblock's bitmap cache.
-@@ -88,7 +158,19 @@ read_block_bitmap(struct super_block *sb
+@@ -88,7 +166,19 @@ read_block_bitmap(struct super_block *sb
desc = ext3_get_group_desc (sb, block_group, NULL);
if (!desc)
goto error_out;
if (!bh)
ext3_error (sb, "read_block_bitmap",
"Cannot read block bitmap - "
-@@ -429,6 +511,7 @@ do_more:
+@@ -429,6 +519,7 @@ do_more:
gdp->bg_free_blocks_count =
cpu_to_le16(le16_to_cpu(gdp->bg_free_blocks_count) +
*pdquot_freed_blocks);
spin_unlock(sb_bgl_lock(sbi, block_group));
percpu_counter_mod(&sbi->s_freeblocks_counter, count);
-@@ -1330,8 +1413,11 @@ allocated:
+@@ -1330,8 +1421,11 @@ allocated:
ret_block, goal_hits, goal_attempts);
spin_lock(sb_bgl_lock(sbi, group_no));
git://git.whamcloud.com / fs / lustre-release.git / blobdiff