Commit 6f334348 authored by Arne Jansen's avatar Arne Jansen Committed by Chris Mason
Browse files

btrfs: Fix early enospc because 'unused' calculated with wrong sign.



'unused' calculated with wrong sign in reserve_metadata_bytes().
This might have lead to unwanted over-reservations.
Signed-off-by: default avatarArne Jansen <sensille@gmx.net>
Reviewed-by: default avatarJosef Bacik <josef@redhat.com>
Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
parent e65e1535
...@@ -3413,7 +3413,7 @@ again: ...@@ -3413,7 +3413,7 @@ again:
* our reservation. * our reservation.
*/ */
if (unused <= space_info->total_bytes) { if (unused <= space_info->total_bytes) {
unused -= space_info->total_bytes; unused = space_info->total_bytes - unused;
if (unused >= num_bytes) { if (unused >= num_bytes) {
if (!reserved) if (!reserved)
space_info->bytes_reserved += orig_bytes; space_info->bytes_reserved += orig_bytes;
......
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