xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[PATCH] ufs: right block allocation

Browse Source 
* 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>
This commit is contained in:
Evgeniy Dushistov
2006-06-25 05:47:19 -07:00
committed by Linus Torvalds
parent 2061df0f89
commit c9a27b5dca
2 changed files with 18 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
fs/ufs/inode.c
View File

@@ -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;
}