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mkfs: reserve x2 sections

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This is due to GC on data sections.
When a data section is cleaned, it produces maximum same number of dirty node
blocks additionally.
So, we should reserve x2 sections to flush dirty node blocks safely.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
This commit is contained in:
Jaegeuk Kim 2013-01-14 09:26:51 +09:00
parent c7e0a01375
commit d2387723a8
1 changed files with 2 additions and 2 deletions
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4
mkfs/f2fs_format.c
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@ -65,7 +65,7 @@ static void f2fs_init_global_parameters(void)
f2fs_params.sector_size = DEFAULT_SECTOR_SIZE;
f2fs_params.sectors_per_blk = DEFAULT_SECTORS_PER_BLOCK;
f2fs_params.blks_per_seg = DEFAULT_BLOCKS_PER_SEGMENT;
f2fs_params.reserved_segments = 20; /* calculated by overprovision ratio */
f2fs_params.reserved_segments = 48; /* calculated by overprovision ratio */
f2fs_params.overprovision = 5;
f2fs_params.segs_per_sec = 1;
f2fs_params.secs_per_zone = 1;
@ -184,7 +184,7 @@ static void f2fs_parse_options(int argc, char *argv[])
}
f2fs_params.reserved_segments =
(100 / f2fs_params.overprovision + 5)
(2 * (100 / f2fs_params.overprovision + 1) + 6)
* f2fs_params.segs_per_sec;
f2fs_params.device_name = argv[optind];
}