Introduce max_file_blocks in sbi to store max block index of file in f2fs,
it could be used to avoid unneeded calculation of max block index in
runtime.
Signed-off-by: Chao Yu <chao2...@samsung.com>
---
fs/f2fs/data.c | 2 +-
fs/f2fs/f2fs.h | 2 +-
fs/f2fs/super.c | 7 ++++---
3 files changed, 6 insertions(+), 5 deletions(-)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 5a71017..73b7a8f 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -762,7 +762,7 @@ static int get_data_block_bmap(struct inode *inode,
sector_t iblock,
struct buffer_head *bh_result, int create)
{
/* Block number less than F2FS MAX BLOCKS */
- if (unlikely(iblock >= max_file_size(0)))
+ if (unlikely(iblock >= F2FS_I_SB(inode)->max_file_blocks))
return -EFBIG;
return __get_data_block(inode, iblock, bh_result, create,
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 9ba6a09..520d8f2 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -786,6 +786,7 @@ struct f2fs_sb_info {
unsigned int total_node_count; /* total node block count */
unsigned int total_valid_node_count; /* valid node block count */
unsigned int total_valid_inode_count; /* valid inode count */
+ unsigned int max_file_blocks; /* max block index of file */
int active_logs; /* # of active logs */
int dir_level; /* directory level */
int serialized_dio_pages; /* serialized direct IO pages */
@@ -1731,7 +1732,6 @@ static inline int f2fs_add_link(struct dentry *dentry,
struct inode *inode)
* super.c
*/
int f2fs_commit_super(struct f2fs_sb_info *, bool);
-loff_t max_file_size(unsigned bits);
int f2fs_sync_fs(struct super_block *, int);
extern __printf(3, 4)
void f2fs_msg(struct super_block *, const char *, const char *, ...);
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index f474355..4e5bbd4 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -909,7 +909,7 @@ static const struct export_operations f2fs_export_ops = {
.get_parent = f2fs_get_parent,
};
-loff_t max_file_size(unsigned bits)
+static loff_t max_file_blocks(void)
{
loff_t result = (DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS);
loff_t leaf_count = ADDRS_PER_BLOCK;
@@ -925,7 +925,6 @@ loff_t max_file_size(unsigned bits)
leaf_count *= NIDS_PER_BLOCK;
result += leaf_count;
- result <<= bits;
return result;
}
@@ -1281,7 +1280,9 @@ try_onemore:
if (err)
goto free_options;
- sb->s_maxbytes = max_file_size(le32_to_cpu(raw_super->log_blocksize));
+ sbi->max_file_blocks = max_file_blocks();
+ sb->s_maxbytes = sbi->max_file_blocks <<
+ le32_to_cpu(raw_super->log_blocksize);
sb->s_max_links = F2FS_LINK_MAX;
get_random_bytes(&sbi->s_next_generation, sizeof(u32));
--
2.6.3
--
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