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Date: Thu, 6 Jul 2017 01:11:31 +0800
From: Chao Yu <chao@...nel.org>
To: jaegeuk@...nel.org
Cc: linux-f2fs-devel@...ts.sourceforge.net,
linux-kernel@...r.kernel.org, Chao Yu <yuchao0@...wei.com>
Subject: [PATCH v2] f2fs: don't count inode block in in-memory inode.i_blocks
From: Chao Yu <yuchao0@...wei.com>
Previously, we count all inode consumed blocks including inode block,
xattr block, index block, data block into i_blocks, for other generic
filesystems, they won't count inode block into i_blocks, so for
userspace applications or quota system, they may detect incorrect block
count according to i_blocks value in inode.
This patch changes to count all blocks into inode.i_blocks excluding
inode block, for on-disk i_blocks, we keep counting inode block for
backward compatibility.
Signed-off-by: Chao Yu <yuchao0@...wei.com>
---
v2:
- fix incorrect return value pointed by Jaegeuk.
- a little bit change in comment log.
fs/f2fs/f2fs.h | 22 ++++++++++++----------
fs/f2fs/inode.c | 4 ++--
fs/f2fs/node.c | 16 ++++++----------
3 files changed, 20 insertions(+), 22 deletions(-)
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index abf9eea67966..7bd0a45dd081 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1355,8 +1355,6 @@ static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid)
return 0;
}
-#define F2FS_DEFAULT_ALLOCATED_BLOCKS 1
-
/*
* Check whether the inode has blocks or not
*/
@@ -1364,8 +1362,7 @@ static inline int F2FS_HAS_BLOCKS(struct inode *inode)
{
block_t xattr_block = F2FS_I(inode)->i_xattr_nid ? 1 : 0;
- return (inode->i_blocks >> F2FS_LOG_SECTORS_PER_BLOCK) >
- (F2FS_DEFAULT_ALLOCATED_BLOCKS + xattr_block);
+ return (inode->i_blocks >> F2FS_LOG_SECTORS_PER_BLOCK) > xattr_block;
}
static inline bool f2fs_has_xattr_block(unsigned int ofs)
@@ -1552,7 +1549,7 @@ static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
}
static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
- struct inode *inode)
+ struct inode *inode, bool is_inode)
{
block_t valid_block_count;
unsigned int valid_node_count;
@@ -1572,8 +1569,12 @@ static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
return false;
}
- if (inode)
- f2fs_i_blocks_write(inode, 1, true);
+ if (inode) {
+ if (is_inode)
+ f2fs_mark_inode_dirty_sync(inode, true);
+ else
+ f2fs_i_blocks_write(inode, 1, true);
+ }
sbi->total_valid_node_count++;
sbi->total_valid_block_count++;
@@ -1584,15 +1585,16 @@ static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi,
}
static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
- struct inode *inode)
+ struct inode *inode, bool is_inode)
{
spin_lock(&sbi->stat_lock);
f2fs_bug_on(sbi, !sbi->total_valid_block_count);
f2fs_bug_on(sbi, !sbi->total_valid_node_count);
- f2fs_bug_on(sbi, !inode->i_blocks);
+ f2fs_bug_on(sbi, !is_inode && !inode->i_blocks);
- f2fs_i_blocks_write(inode, 1, false);
+ if (!is_inode)
+ f2fs_i_blocks_write(inode, 1, false);
sbi->total_valid_node_count--;
sbi->total_valid_block_count--;
diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
index 1ff5bd418d87..e42a7a8805dc 100644
--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -130,7 +130,7 @@ static int do_read_inode(struct inode *inode)
i_gid_write(inode, le32_to_cpu(ri->i_gid));
set_nlink(inode, le32_to_cpu(ri->i_links));
inode->i_size = le64_to_cpu(ri->i_size);
- inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks));
+ inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
@@ -268,7 +268,7 @@ int update_inode(struct inode *inode, struct page *node_page)
ri->i_gid = cpu_to_le32(i_gid_read(inode));
ri->i_links = cpu_to_le32(inode->i_nlink);
ri->i_size = cpu_to_le64(i_size_read(inode));
- ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks));
+ ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
if (et) {
read_lock(&et->lock);
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index fd57ffd88508..b9f14ba6441f 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -678,15 +678,11 @@ static void truncate_node(struct dnode_of_data *dn)
struct node_info ni;
get_node_info(sbi, dn->nid, &ni);
- if (dn->inode->i_blocks == 0) {
- f2fs_bug_on(sbi, ni.blk_addr != NULL_ADDR);
- goto invalidate;
- }
f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR);
/* Deallocate node address */
invalidate_blocks(sbi, ni.blk_addr);
- dec_valid_node_count(sbi, dn->inode);
+ dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino);
set_node_addr(sbi, &ni, NULL_ADDR, false);
if (dn->nid == dn->inode->i_ino) {
@@ -694,7 +690,7 @@ static void truncate_node(struct dnode_of_data *dn)
dec_valid_inode_count(sbi);
f2fs_inode_synced(dn->inode);
}
-invalidate:
+
clear_node_page_dirty(dn->node_page);
set_sbi_flag(sbi, SBI_IS_DIRTY);
@@ -1044,7 +1040,7 @@ struct page *new_node_page(struct dnode_of_data *dn,
if (!page)
return ERR_PTR(-ENOMEM);
- if (unlikely(!inc_valid_node_count(sbi, dn->inode))) {
+ if (unlikely(!inc_valid_node_count(sbi, dn->inode, !ofs))) {
err = -ENOSPC;
goto fail;
}
@@ -2207,14 +2203,14 @@ int recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr)
get_node_info(sbi, prev_xnid, &ni);
f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR);
invalidate_blocks(sbi, ni.blk_addr);
- dec_valid_node_count(sbi, inode);
+ dec_valid_node_count(sbi, inode, false);
set_node_addr(sbi, &ni, NULL_ADDR, false);
recover_xnid:
/* 2: update xattr nid in inode */
remove_free_nid(sbi, new_xnid);
f2fs_i_xnid_write(inode, new_xnid);
- if (unlikely(!inc_valid_node_count(sbi, inode)))
+ if (unlikely(!inc_valid_node_count(sbi, inode, false)))
f2fs_bug_on(sbi, 1);
update_inode_page(inode);
@@ -2272,7 +2268,7 @@ int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page)
new_ni = old_ni;
new_ni.ino = ino;
- if (unlikely(!inc_valid_node_count(sbi, NULL)))
+ if (unlikely(!inc_valid_node_count(sbi, NULL, true)))
WARN_ON(1);
set_node_addr(sbi, &new_ni, NEW_ADDR, false);
inc_valid_inode_count(sbi);
--
2.13.0.90.g1eb437020
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