From: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
commit da35fe96d12d15779f3cb74929b7ed03941cf983 upstream.
This patch increases the threshold that limits the reserved root space from 0.2%
to 12.5% by using simple shift operation.
Typically Android sets 128MB, but if the storage capacity is 32GB, 0.2% which is
around 64MB becomes too small. Let's relax it.
Cc: stable@xxxxxxxxxxxxxxx
Reported-by: Aran Dalton <arda@xxxxxxxxxxxxxxxxx>
Reviewed-by: Chao Yu <chao@xxxxxxxxxx>
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/f2fs/super.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -255,10 +255,10 @@ static int f2fs_sb_read_encoding(const s
static inline void limit_reserve_root(struct f2fs_sb_info *sbi)
{
- block_t limit = min((sbi->user_block_count << 1) / 1000,
+ block_t limit = min((sbi->user_block_count >> 3),
sbi->user_block_count - sbi->reserved_blocks);
- /* limit is 0.2% */
+ /* limit is 12.5% */
if (test_opt(sbi, RESERVE_ROOT) &&
F2FS_OPTION(sbi).root_reserved_blocks > limit) {
F2FS_OPTION(sbi).root_reserved_blocks = limit;
