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UBIFS: fix the dark space calculation

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The dark space calculation should be 64 bit type-casted, when
assigning to tmp64 (similar to how total_free is calculated).
Overflow will occur for very large flashes.

Signed-off-by: srimugunthan <srimugunthan.dhandapani@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
This commit is contained in:
srimugunthan dhandapani 2011-08-26 16:08:39 +05:30 • committed by Artem Bityutskiy
parent d37854cf99
commit 7606f85a70
2 changed files with 2 additions and 2 deletions
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2
fs/ubifs/sb.c
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@ -247,7 +247,7 @@ static int create_default_filesystem(struct ubifs_info *c)
mst->total_dirty = cpu_to_le64(tmp64);
/* The indexing LEB does not contribute to dark space */
tmp64 = (c->main_lebs - 1) * c->dark_wm;
tmp64 = ((long long)(c->main_lebs - 1) * c->dark_wm);
mst->total_dark = cpu_to_le64(tmp64);
mst->total_used = cpu_to_le64(UBIFS_INO_NODE_SZ);