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-rw-r--r--fs/ext2/balloc.c14
-rw-r--r--fs/ext2/ialloc.c1
-rw-r--r--fs/ext2/inode.c5
-rw-r--r--fs/ext2/super.c39
4 files changed, 43 insertions, 16 deletions
diff --git a/fs/ext2/balloc.c b/fs/ext2/balloc.c
index 905166a3ffb2..2616d0ea5c5c 100644
--- a/fs/ext2/balloc.c
+++ b/fs/ext2/balloc.c
@@ -1444,19 +1444,9 @@ ext2_fsblk_t ext2_new_block(struct inode *inode, unsigned long goal, int *errp)
#ifdef EXT2FS_DEBUG
-static const int nibblemap[] = {4, 3, 3, 2, 3, 2, 2, 1, 3, 2, 2, 1, 2, 1, 1, 0};
-
-unsigned long ext2_count_free (struct buffer_head * map, unsigned int numchars)
+unsigned long ext2_count_free(struct buffer_head *map, unsigned int numchars)
{
- unsigned int i;
- unsigned long sum = 0;
-
- if (!map)
- return (0);
- for (i = 0; i < numchars; i++)
- sum += nibblemap[map->b_data[i] & 0xf] +
- nibblemap[(map->b_data[i] >> 4) & 0xf];
- return (sum);
+ return numchars * BITS_PER_BYTE - memweight(map->b_data, numchars);
}
#endif /* EXT2FS_DEBUG */
diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c
index c13eb7b91a11..8f370e012e61 100644
--- a/fs/ext2/ialloc.c
+++ b/fs/ext2/ialloc.c
@@ -644,6 +644,7 @@ unsigned long ext2_count_free_inodes (struct super_block * sb)
}
brelse(bitmap_bh);
printk("ext2_count_free_inodes: stored = %lu, computed = %lu, %lu\n",
+ (unsigned long)
percpu_counter_read(&EXT2_SB(sb)->s_freeinodes_counter),
desc_count, bitmap_count);
return desc_count;
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 264d315f6c47..6363ac66fafa 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -79,6 +79,7 @@ void ext2_evict_inode(struct inode * inode)
truncate_inode_pages(&inode->i_data, 0);
if (want_delete) {
+ sb_start_intwrite(inode->i_sb);
/* set dtime */
EXT2_I(inode)->i_dtime = get_seconds();
mark_inode_dirty(inode);
@@ -98,8 +99,10 @@ void ext2_evict_inode(struct inode * inode)
if (unlikely(rsv))
kfree(rsv);
- if (want_delete)
+ if (want_delete) {
ext2_free_inode(inode);
+ sb_end_intwrite(inode->i_sb);
+ }
}
typedef struct {
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 5df3d2d8169c..af74d9e27b71 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -42,6 +42,8 @@ static void ext2_sync_super(struct super_block *sb,
static int ext2_remount (struct super_block * sb, int * flags, char * data);
static int ext2_statfs (struct dentry * dentry, struct kstatfs * buf);
static int ext2_sync_fs(struct super_block *sb, int wait);
+static int ext2_freeze(struct super_block *sb);
+static int ext2_unfreeze(struct super_block *sb);
void ext2_error(struct super_block *sb, const char *function,
const char *fmt, ...)
@@ -305,6 +307,8 @@ static const struct super_operations ext2_sops = {
.evict_inode = ext2_evict_inode,
.put_super = ext2_put_super,
.sync_fs = ext2_sync_fs,
+ .freeze_fs = ext2_freeze,
+ .unfreeze_fs = ext2_unfreeze,
.statfs = ext2_statfs,
.remount_fs = ext2_remount,
.show_options = ext2_show_options,
@@ -771,13 +775,13 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
err = -ENOMEM;
sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi)
- goto failed_unlock;
+ goto failed;
sbi->s_blockgroup_lock =
kzalloc(sizeof(struct blockgroup_lock), GFP_KERNEL);
if (!sbi->s_blockgroup_lock) {
kfree(sbi);
- goto failed_unlock;
+ goto failed;
}
sb->s_fs_info = sbi;
sbi->s_sb_block = sb_block;
@@ -1130,7 +1134,7 @@ failed_sbi:
sb->s_fs_info = NULL;
kfree(sbi->s_blockgroup_lock);
kfree(sbi);
-failed_unlock:
+failed:
return ret;
}
@@ -1200,6 +1204,35 @@ static int ext2_sync_fs(struct super_block *sb, int wait)
return 0;
}
+static int ext2_freeze(struct super_block *sb)
+{
+ struct ext2_sb_info *sbi = EXT2_SB(sb);
+
+ /*
+ * Open but unlinked files present? Keep EXT2_VALID_FS flag cleared
+ * because we have unattached inodes and thus filesystem is not fully
+ * consistent.
+ */
+ if (atomic_long_read(&sb->s_remove_count)) {
+ ext2_sync_fs(sb, 1);
+ return 0;
+ }
+ /* Set EXT2_FS_VALID flag */
+ spin_lock(&sbi->s_lock);
+ sbi->s_es->s_state = cpu_to_le16(sbi->s_mount_state);
+ spin_unlock(&sbi->s_lock);
+ ext2_sync_super(sb, sbi->s_es, 1);
+
+ return 0;
+}
+
+static int ext2_unfreeze(struct super_block *sb)
+{
+ /* Just write sb to clear EXT2_VALID_FS flag */
+ ext2_write_super(sb);
+
+ return 0;
+}
void ext2_write_super(struct super_block *sb)
{