f2fs: avoid variable length array
Instead of using variable length array, this patch let preallocate memory for
them.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 877a272..c9d314f 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -505,7 +505,7 @@
struct seg_entry *se = get_seg_entry(sbi, cpc->trim_start);
unsigned long *cur_map = (unsigned long *)se->cur_valid_map;
unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map;
- unsigned long dmap[entries];
+ unsigned long *dmap = SIT_I(sbi)->tmp_map;
unsigned int start = 0, end = -1;
bool force = (cpc->reason == CP_DISCARD);
int i;
@@ -924,7 +924,7 @@
{
struct seg_entry *se = get_seg_entry(sbi, seg->segno);
int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long);
- unsigned long target_map[entries];
+ unsigned long *target_map = SIT_I(sbi)->tmp_map;
unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map;
unsigned long *cur_map = (unsigned long *)se->cur_valid_map;
int i, pos;
@@ -1855,6 +1855,10 @@
return -ENOMEM;
}
+ sit_i->tmp_map = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL);
+ if (!sit_i->tmp_map)
+ return -ENOMEM;
+
if (sbi->segs_per_sec > 1) {
sit_i->sec_entries = vzalloc(MAIN_SECS(sbi) *
sizeof(struct sec_entry));
@@ -2236,6 +2240,8 @@
kfree(sit_i->sentries[start].ckpt_valid_map);
}
}
+ kfree(sit_i->tmp_map);
+
vfree(sit_i->sentries);
vfree(sit_i->sec_entries);
kfree(sit_i->dirty_sentries_bitmap);