[PATCH] ufs: right block allocation
* After block allocation, we map it on the same "address" as 8 others
blocks
* We nullify block several times: once in ufs/block.c and once in
block_*write_full_page, and use different "caches" for this.
Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c
index 3c3f62c..2b23663 100644
--- a/fs/ufs/inode.c
+++ b/fs/ufs/inode.c
@@ -161,6 +161,17 @@
return ret;
}
+static void ufs_clear_block(struct inode *inode, struct buffer_head *bh)
+{
+ lock_buffer(bh);
+ memset(bh->b_data, 0, inode->i_sb->s_blocksize);
+ set_buffer_uptodate(bh);
+ mark_buffer_dirty(bh);
+ unlock_buffer(bh);
+ if (IS_SYNC(inode))
+ sync_dirty_buffer(bh);
+}
+
static struct buffer_head * ufs_inode_getfrag (struct inode *inode,
unsigned int fragment, unsigned int new_fragment,
unsigned int required, int *err, int metadata, long *phys, int *new)
@@ -204,7 +215,7 @@
brelse (result);
goto repeat;
} else {
- *phys = tmp;
+ *phys = tmp + blockoff;
return NULL;
}
}
@@ -259,14 +270,11 @@
return NULL;
}
- /* The nullification of framgents done in ufs/balloc.c is
- * something I don't have the stomache to move into here right
- * now. -DaveM
- */
if (metadata) {
result = sb_getblk(inode->i_sb, tmp + blockoff);
+ ufs_clear_block(inode, result);
} else {
- *phys = tmp;
+ *phys = tmp + blockoff;
result = NULL;
*err = 0;
*new = 1;
@@ -333,7 +341,7 @@
brelse (result);
goto repeat;
} else {
- *phys = tmp;
+ *phys = tmp + blockoff;
goto out;
}
}
@@ -349,14 +357,12 @@
goto out;
}
- /* The nullification of framgents done in ufs/balloc.c is
- * something I don't have the stomache to move into here right
- * now. -DaveM
- */
+
if (metadata) {
result = sb_getblk(sb, tmp + blockoff);
+ ufs_clear_block(inode, result);
} else {
- *phys = tmp;
+ *phys = tmp + blockoff;
*new = 1;
}