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-rw-r--r--lib/libalpm/diskspace.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/lib/libalpm/diskspace.c b/lib/libalpm/diskspace.c
index 5ed8e0be..97f28ab2 100644
--- a/lib/libalpm/diskspace.c
+++ b/lib/libalpm/diskspace.c
@@ -294,10 +294,15 @@ int _alpm_check_diskspace(pmtrans_t *trans, pmdb_t *db_local)
for(i = mount_points; i; i = alpm_list_next(i)) {
alpm_mountpoint_t *data = i->data;
if(data->used == 1) {
- _alpm_log(PM_LOG_DEBUG, "partition %s, needed %ld, free %ld\n",
- data->mount_dir, data->max_blocks_needed,
+ /* cushion is roughly min(5% capacity, 20MiB) */
+ long fivepc = (data->fsp.f_blocks / 20) + 1;
+ long twentymb = (20 * 1024 * 1024 / data->fsp.f_bsize) + 1;
+ long cushion = fivepc < twentymb ? fivepc : twentymb;
+
+ _alpm_log(PM_LOG_DEBUG, "partition %s, needed %ld, cushion %ld, free %ld\n",
+ data->mount_dir, data->max_blocks_needed, cushion,
(unsigned long)data->fsp.f_bfree);
- if(data->max_blocks_needed > data->fsp.f_bfree) {
+ if(data->max_blocks_needed + cushion > data->fsp.f_bfree) {
abort = 1;
}
}