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>
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index a2e3a8f..0bbd756 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -907,7 +907,7 @@
.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 @@
leaf_count *= NIDS_PER_BLOCK;
result += leaf_count;
- result <<= bits;
return result;
}
@@ -1278,7 +1277,9 @@
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));