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Date: Mon, 26 Aug 2013 20:16:38 +0900
From: Jaegeuk Kim <jaegeuk.kim@...sung.com>
To: unlisted-recipients:; (no To-header on input)
Cc: Jaegeuk Kim <jaegeuk.kim@...sung.com>,
linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-f2fs-devel@...ts.sourceforge.net
Subject: [PATCH 2/5] f2fs: reserve the xattr space dynamically
This patch enables the number of direct pointers inside on-disk inode block to
be changed dynamically according to the size of inline xattr space.
The number of direct pointers, ADDRS_PER_INODE, can be changed only if the file
has inline xattr flag.
The number of direct pointers that will be used by inline xattrs is defined as
F2FS_INLINE_XATTR_ADDRS.
Current patch assigns F2FS_INLINE_XATTR_ADDRS to 0 temporarily.
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@...sung.com>
---
fs/f2fs/data.c | 5 +++--
fs/f2fs/f2fs.h | 18 ++++++++----------
fs/f2fs/file.c | 2 +-
fs/f2fs/gc.c | 9 ++++++---
fs/f2fs/node.c | 9 +++++----
fs/f2fs/recovery.c | 13 +++++++++----
fs/f2fs/super.c | 2 +-
include/linux/f2fs_fs.h | 16 ++++++++++++----
8 files changed, 45 insertions(+), 29 deletions(-)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 6b328de..941f9b9 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -117,7 +117,8 @@ void update_extent_cache(block_t blk_addr, struct dnode_of_data *dn)
block_t start_blkaddr, end_blkaddr;
BUG_ON(blk_addr == NEW_ADDR);
- fofs = start_bidx_of_node(ofs_of_node(dn->node_page)) + dn->ofs_in_node;
+ fofs = start_bidx_of_node(ofs_of_node(dn->node_page), fi) +
+ dn->ofs_in_node;
/* Update the page address in the parent node */
__set_data_blkaddr(dn, blk_addr);
@@ -448,7 +449,7 @@ static int get_data_block_ro(struct inode *inode, sector_t iblock,
unsigned int end_offset;
end_offset = IS_INODE(dn.node_page) ?
- ADDRS_PER_INODE :
+ ADDRS_PER_INODE(F2FS_I(inode)) :
ADDRS_PER_BLOCK;
clear_buffer_new(bh_result);
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index b82f141..0343759 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -301,15 +301,6 @@ struct f2fs_sm_info {
};
/*
- * For directory operation
- */
-#define NODE_DIR1_BLOCK (ADDRS_PER_INODE + 1)
-#define NODE_DIR2_BLOCK (ADDRS_PER_INODE + 2)
-#define NODE_IND1_BLOCK (ADDRS_PER_INODE + 3)
-#define NODE_IND2_BLOCK (ADDRS_PER_INODE + 4)
-#define NODE_DIND_BLOCK (ADDRS_PER_INODE + 5)
-
-/*
* For superblock
*/
/*
@@ -942,6 +933,13 @@ static inline void set_raw_inline(struct f2fs_inode_info *fi,
ri->i_inline |= F2FS_INLINE_XATTR;
}
+static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi)
+{
+ if (is_inode_flag_set(fi, FI_INLINE_XATTR))
+ return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS;
+ return DEF_ADDRS_PER_INODE;
+}
+
static inline int f2fs_readonly(struct super_block *sb)
{
return sb->s_flags & MS_RDONLY;
@@ -1108,7 +1106,7 @@ int do_write_data_page(struct page *);
*/
int start_gc_thread(struct f2fs_sb_info *);
void stop_gc_thread(struct f2fs_sb_info *);
-block_t start_bidx_of_node(unsigned int);
+block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *);
int f2fs_gc(struct f2fs_sb_info *);
void build_gc_manager(struct f2fs_sb_info *);
int __init create_gc_caches(void);
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index bd4184e..02c9069 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -290,7 +290,7 @@ static int truncate_blocks(struct inode *inode, u64 from)
}
if (IS_INODE(dn.node_page))
- count = ADDRS_PER_INODE;
+ count = ADDRS_PER_INODE(F2FS_I(inode));
else
count = ADDRS_PER_BLOCK;
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index e6b3ffd..eb89037 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -461,7 +461,7 @@ next_step:
* as indirect or double indirect node blocks, are given, it must be a caller's
* bug.
*/
-block_t start_bidx_of_node(unsigned int node_ofs)
+block_t start_bidx_of_node(unsigned int node_ofs, struct f2fs_inode_info *fi)
{
unsigned int indirect_blks = 2 * NIDS_PER_BLOCK + 4;
unsigned int bidx;
@@ -478,7 +478,7 @@ block_t start_bidx_of_node(unsigned int node_ofs)
int dec = (node_ofs - indirect_blks - 3) / (NIDS_PER_BLOCK + 1);
bidx = node_ofs - 5 - dec;
}
- return bidx * ADDRS_PER_BLOCK + ADDRS_PER_INODE;
+ return bidx * ADDRS_PER_BLOCK + ADDRS_PER_INODE(fi);
}
static int check_dnode(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
@@ -586,7 +586,6 @@ next_step:
continue;
}
- start_bidx = start_bidx_of_node(nofs);
ofs_in_node = le16_to_cpu(entry->ofs_in_node);
if (phase == 2) {
@@ -594,6 +593,8 @@ next_step:
if (IS_ERR(inode))
continue;
+ start_bidx = start_bidx_of_node(nofs, F2FS_I(inode));
+
data_page = find_data_page(inode,
start_bidx + ofs_in_node, false);
if (IS_ERR(data_page))
@@ -604,6 +605,8 @@ next_step:
} else {
inode = find_gc_inode(dni.ino, ilist);
if (inode) {
+ start_bidx = start_bidx_of_node(nofs,
+ F2FS_I(inode));
data_page = get_lock_data_page(inode,
start_bidx + ofs_in_node);
if (IS_ERR(data_page))
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 818ff36..f0e733b 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -315,9 +315,10 @@ cache:
* The maximum depth is four.
* Offset[0] will have raw inode offset.
*/
-static int get_node_path(long block, int offset[4], unsigned int noffset[4])
+static int get_node_path(struct f2fs_inode_info *fi, long block,
+ int offset[4], unsigned int noffset[4])
{
- const long direct_index = ADDRS_PER_INODE;
+ const long direct_index = ADDRS_PER_INODE(fi);
const long direct_blks = ADDRS_PER_BLOCK;
const long dptrs_per_blk = NIDS_PER_BLOCK;
const long indirect_blks = ADDRS_PER_BLOCK * NIDS_PER_BLOCK;
@@ -405,7 +406,7 @@ int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode)
int level, i;
int err = 0;
- level = get_node_path(index, offset, noffset);
+ level = get_node_path(F2FS_I(dn->inode), index, offset, noffset);
nids[0] = dn->inode->i_ino;
npage[0] = dn->inode_page;
@@ -687,7 +688,7 @@ int truncate_inode_blocks(struct inode *inode, pgoff_t from)
trace_f2fs_truncate_inode_blocks_enter(inode, from);
- level = get_node_path(from, offset, noffset);
+ level = get_node_path(F2FS_I(inode), from, offset, noffset);
restart:
page = get_node_page(sbi, inode->i_ino);
if (IS_ERR(page)) {
diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c
index fa493bb..51ef5ee 100644
--- a/fs/f2fs/recovery.c
+++ b/fs/f2fs/recovery.c
@@ -213,6 +213,7 @@ static int check_index_in_prev_nodes(struct f2fs_sb_info *sbi,
void *kaddr;
struct inode *inode;
struct page *node_page;
+ unsigned int offset;
block_t bidx;
int i;
@@ -257,8 +258,8 @@ static int check_index_in_prev_nodes(struct f2fs_sb_info *sbi,
node_page = get_node_page(sbi, nid);
if (IS_ERR(node_page))
return PTR_ERR(node_page);
- bidx = start_bidx_of_node(ofs_of_node(node_page)) +
- le16_to_cpu(sum.ofs_in_node);
+
+ offset = ofs_of_node(node_page);
ino = ino_of_node(node_page);
f2fs_put_page(node_page, 1);
@@ -267,6 +268,9 @@ static int check_index_in_prev_nodes(struct f2fs_sb_info *sbi,
if (IS_ERR(inode))
return PTR_ERR(inode);
+ bidx = start_bidx_of_node(offset, F2FS_I(inode)) +
+ le16_to_cpu(sum.ofs_in_node);
+
truncate_hole(inode, bidx, bidx + 1);
iput(inode);
return 0;
@@ -275,6 +279,7 @@ static int check_index_in_prev_nodes(struct f2fs_sb_info *sbi,
static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode,
struct page *page, block_t blkaddr)
{
+ struct f2fs_inode_info *fi = F2FS_I(inode);
unsigned int start, end;
struct dnode_of_data dn;
struct f2fs_summary sum;
@@ -282,9 +287,9 @@ static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode,
int err = 0, recovered = 0;
int ilock;
- start = start_bidx_of_node(ofs_of_node(page));
+ start = start_bidx_of_node(ofs_of_node(page), fi);
if (IS_INODE(page))
- end = start + ADDRS_PER_INODE;
+ end = start + ADDRS_PER_INODE(fi);
else
end = start + ADDRS_PER_BLOCK;
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 70ecf48..13d0a0f 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -618,7 +618,7 @@ static const struct export_operations f2fs_export_ops = {
static loff_t max_file_size(unsigned bits)
{
- loff_t result = ADDRS_PER_INODE;
+ loff_t result = (DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS);
loff_t leaf_count = ADDRS_PER_BLOCK;
/* two direct node blocks */
diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
index 10ab11f..93e7020 100644
--- a/include/linux/f2fs_fs.h
+++ b/include/linux/f2fs_fs.h
@@ -140,9 +140,17 @@ struct f2fs_extent {
} __packed;
#define F2FS_NAME_LEN 255
-#define ADDRS_PER_INODE 923 /* Address Pointers in an Inode */
-#define ADDRS_PER_BLOCK 1018 /* Address Pointers in a Direct Block */
-#define NIDS_PER_BLOCK 1018 /* Node IDs in an Indirect Block */
+#define F2FS_INLINE_XATTR_ADDRS 0 /* 0 bytes for inline xattrs */
+#define DEF_ADDRS_PER_INODE 923 /* Address Pointers in an Inode */
+#define ADDRS_PER_INODE(fi) addrs_per_inode(fi)
+#define ADDRS_PER_BLOCK 1018 /* Address Pointers in a Direct Block */
+#define NIDS_PER_BLOCK 1018 /* Node IDs in an Indirect Block */
+
+#define NODE_DIR1_BLOCK (DEF_ADDRS_PER_INODE + 1)
+#define NODE_DIR2_BLOCK (DEF_ADDRS_PER_INODE + 2)
+#define NODE_IND1_BLOCK (DEF_ADDRS_PER_INODE + 3)
+#define NODE_IND2_BLOCK (DEF_ADDRS_PER_INODE + 4)
+#define NODE_DIND_BLOCK (DEF_ADDRS_PER_INODE + 5)
#define F2FS_INLINE_XATTR 0x01 /* file inline xattr flag */
@@ -172,7 +180,7 @@ struct f2fs_inode {
struct f2fs_extent i_ext; /* caching a largest extent */
- __le32 i_addr[ADDRS_PER_INODE]; /* Pointers to data blocks */
+ __le32 i_addr[DEF_ADDRS_PER_INODE]; /* Pointers to data blocks */
__le32 i_nid[5]; /* direct(2), indirect(2),
double_indirect(1) node id */
--
1.8.3.1.437.g0dbd812
--
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