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f2fs: increase the limit for reserve_root 

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: Aran Dalton <arda@allwinnertech.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2022-08-23 10:18:42 -07:00
parent 4f99484d27
commit da35fe96d1
1 changed files with 2 additions and 2 deletions
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4
fs/f2fs/super.c
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@ -301,10 +301,10 @@ static void f2fs_destroy_casefold_cache(void) { }
static inline void limit_reserve_root(struct f2fs_sb_info *sbi) 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); sbi->user_block_count - sbi->reserved_blocks);
/* limit is 0.2% */ /* limit is 12.5% */
if (test_opt(sbi, RESERVE_ROOT) && if (test_opt(sbi, RESERVE_ROOT) &&
F2FS_OPTION(sbi).root_reserved_blocks > limit) { F2FS_OPTION(sbi).root_reserved_blocks > limit) {
F2FS_OPTION(sbi).root_reserved_blocks = limit; F2FS_OPTION(sbi).root_reserved_blocks = limit;