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| author | Evgeniy Dushistov <dushistov@mail.ru> | 2006-06-25 05:47:19 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-25 10:01:01 -0700 |
| commit | c9a27b5dca52bbd0955e065e49e56eb313d02c34 (patch) | |
| tree | 6e5223f9ee942e8a55552138aa67ef2a37e01738 | |
| parent | 2061df0f89201c0abeb4c17d343309c9fae5b861 (diff) | |
| download | linux-c9a27b5dca52bbd0955e065e49e56eb313d02c34.tar.gz linux-c9a27b5dca52bbd0955e065e49e56eb313d02c34.tar.bz2 linux-c9a27b5dca52bbd0955e065e49e56eb313d02c34.zip | |
[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>
| -rw-r--r-- | fs/ufs/balloc.c | 15 | ||||
| -rw-r--r-- | fs/ufs/inode.c | 30 |
2 files changed, 18 insertions, 27 deletions
diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c index 3ada9dcf55b8..cc0c8f15d8fd 100644 --- a/fs/ufs/balloc.c +++ b/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 * inode, __fs32 * p, unsigned fragment, *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 * inode, __fs32 * p, unsigned fragment, *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 * inode, __fs32 * p, unsigned fragment, *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 --git a/fs/ufs/inode.c b/fs/ufs/inode.c index 3c3f62ce2ad9..2b2366360e5a 100644 --- a/fs/ufs/inode.c +++ b/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; } |