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Commit c5d8198c authored by Jaegeuk Kim's avatar Jaegeuk Kim Committed by Greg Kroah-Hartman
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f2fs: increase the limit for reserve_root 



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@vger.kernel.org
Reported-by: default avatarAran Dalton <arda@allwinnertech.com>
Reviewed-by: default avatarChao Yu <chao@kernel.org>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 26b7c0ac

fs/f2fs/super.c

+2 −2
Original line number Diff line number Diff line
@@ -255,10 +255,10 @@ static int f2fs_sb_read_encoding(const struct f2fs_super_block *sb, 


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;