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f2fs: allow address pointer number of dnode aligning to specified size

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This patch expands scalability of dnode layout, it allows address pointer
number of dnode aligning to specified size (now, the size is one byte by
default), and later the number can align to compress cluster size
(1 << n bytes, n=[2,..)), it can avoid cluster acrossing two dnode, making
design of compress meta layout simple.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu
2019-03-25 21:08:19 +08:00
committed by Jaegeuk Kim
parent 2df0ab0457
commit d02a6e6174
6 changed files with 23 additions and 14 deletions
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9
fs/f2fs/f2fs.h
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@@ -2574,7 +2574,14 @@ static inline int f2fs_has_inline_xattr(struct inode *inode)
static inline unsigned int addrs_per_inode(struct inode *inode)
{
return CUR_ADDRS_PER_INODE(inode) - get_inline_xattr_addrs(inode);
unsigned int addrs = CUR_ADDRS_PER_INODE(inode) -
get_inline_xattr_addrs(inode);
return ALIGN_DOWN(addrs, 1);
}
static inline unsigned int addrs_per_block(struct inode *inode)
{
return ALIGN_DOWN(DEF_ADDRS_PER_BLOCK, 1);
}
static inline void *inline_xattr_addr(struct inode *inode, struct page *page)