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| author | Chao Yu <chao2.yu@samsung.com> | 2015-12-31 14:35:37 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-01-03 21:40:04 -0800 |
| commit | e0afc4d6d0d3e7e5a99f691bc64ae7c74bea790e (patch) | |
| tree | 76cdea35b5c446a7b0137c1a4849f47d7d801e35 | |
| parent | 3a9e6433a367211a172cb7b4d5b727c720bd0de0 (diff) | |
| download | blackbird-op-linux-e0afc4d6d0d3e7e5a99f691bc64ae7c74bea790e.tar.gz blackbird-op-linux-e0afc4d6d0d3e7e5a99f691bc64ae7c74bea790e.zip | |
f2fs: introduce max_file_blocks in sbi
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.yu@samsung.com>
[Jaegeuk Kim: fix overflow of sbi->max_file_blocks]
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
| -rw-r--r-- | fs/f2fs/data.c | 2 | ||||
| -rw-r--r-- | fs/f2fs/f2fs.h | 2 | ||||
| -rw-r--r-- | 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 4851e84d0283..89a978c57da9 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 e2990c978661..882babaa678e 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -783,6 +783,7 @@ 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 */ + loff_t max_file_blocks; /* max block index of file */ int active_logs; /* # of active logs */ int dir_level; /* directory level */ @@ -1727,7 +1728,6 @@ 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 a2e3a8f893ed..0bbd756821a7 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -907,7 +907,7 @@ 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; @@ -923,7 +923,6 @@ loff_t max_file_size(unsigned bits) leaf_count *= NIDS_PER_BLOCK; result += leaf_count; - result <<= bits; return result; } @@ -1278,7 +1277,9 @@ 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)); |
