The patch titled
ufs: right block allocation
has been removed from the -mm tree. Its filename is
ufs-right-block-allocation.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: ufs: right block allocation
From: Evgeniy Dushistov <dushistov@xxxxxxx>
* 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@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
fs/ufs/balloc.c | 15 ---------------
fs/ufs/inode.c | 30 ++++++++++++++++++------------
2 files changed, 18 insertions(+), 27 deletions(-)
diff -puN fs/ufs/balloc.c~ufs-right-block-allocation fs/ufs/balloc.c
--- a/fs/ufs/balloc.c~ufs-right-block-allocation
+++ a/fs/ufs/balloc.c
@@ -223,18 +223,6 @@ failed:
}
-
-#define NULLIFY_FRAGMENTS \
- for (i = oldcount; i < newcount; i++) { \
- bh = sb_getblk(sb, result + i); \
- memset (bh->b_data, 0, sb->s_blocksize); \
- set_buffer_uptodate(bh); \
- mark_buffer_dirty (bh); \
- if (IS_SYNC(inode)) \
- sync_dirty_buffer(bh); \
- brelse (bh); \
- }
-
unsigned ufs_new_fragments (struct inode * inode, __fs32 * p, unsigned fragment,
unsigned goal, unsigned count, int * err )
{
@@ -312,7 +300,6 @@ unsigned ufs_new_fragments (struct inode
*err = 0;
inode->i_blocks += count << uspi->s_nspfshift;
UFS_I(inode)->i_lastfrag = max_t(u32, UFS_I(inode)->i_lastfrag, fragment + count);
- NULLIFY_FRAGMENTS
}
unlock_super(sb);
UFSD(("EXIT, result %u\n", result))
@@ -327,7 +314,6 @@ unsigned ufs_new_fragments (struct inode
*err = 0;
inode->i_blocks += count << uspi->s_nspfshift;
UFS_I(inode)->i_lastfrag = max_t(u32, UFS_I(inode)->i_lastfrag, fragment + count);
- NULLIFY_FRAGMENTS
unlock_super(sb);
UFSD(("EXIT, result %u\n", result))
return result;
@@ -379,7 +365,6 @@ unsigned ufs_new_fragments (struct inode
*err = 0;
inode->i_blocks += count << uspi->s_nspfshift;
UFS_I(inode)->i_lastfrag = max_t(u32, UFS_I(inode)->i_lastfrag, fragment + count);
- NULLIFY_FRAGMENTS
unlock_super(sb);
if (newcount < request)
ufs_free_fragments (inode, result + newcount, request - newcount);
diff -puN fs/ufs/inode.c~ufs-right-block-allocation fs/ufs/inode.c
--- a/fs/ufs/inode.c~ufs-right-block-allocation
+++ a/fs/ufs/inode.c
@@ -161,6 +161,17 @@ out:
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 @@ repeat:
brelse (result);
goto repeat;
} else {
- *phys = tmp;
+ *phys = tmp + blockoff;
return NULL;
}
}
@@ -259,14 +270,11 @@ repeat:
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 @@ repeat:
brelse (result);
goto repeat;
} else {
- *phys = tmp;
+ *phys = tmp + blockoff;
goto out;
}
}
@@ -349,14 +357,12 @@ repeat:
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;
}
_
Patches currently in -mm which might be from dushistov@xxxxxxx are
origin.patch
git-jfs.patch
-
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