Commit 44a83499 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: add maximum prefree segments 



In 1TB storage, we need to admit 22841 prefree segments, which can consume
too much segments.
This patch sets 8GB in max. prefree segments in that case.

Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 5f281fab

fs/f2fs/segment.c

+3 −0
Original line number Diff line number Diff line
@@ -2409,6 +2409,9 @@ int build_segment_manager(struct f2fs_sb_info *sbi) 
	sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr);

	sm_info->rec_prefree_segments = sm_info->main_segments *

					DEF_RECLAIM_PREFREE_SEGMENTS / 100;

	if (sm_info->rec_prefree_segments > DEF_MAX_RECLAIM_PREFREE_SEGMENTS)

		sm_info->rec_prefree_segments = DEF_MAX_RECLAIM_PREFREE_SEGMENTS;



	if (!test_opt(sbi, LFS))

		sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC;

	sm_info->min_ipu_util = DEF_MIN_IPU_UTIL;

fs/f2fs/segment.h

+1 −0
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 
#define NULL_SECNO			((unsigned int)(~0))



#define DEF_RECLAIM_PREFREE_SEGMENTS	5	/* 5% over total segments */

#define DEF_MAX_RECLAIM_PREFREE_SEGMENTS	4096	/* 8GB in maximum */



/* L: Logical segment # in volume, R: Relative segment # in main area */

#define GET_L2R_SEGNO(free_i, segno)	(segno - free_i->start_segno)

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