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bcachefs: Make sure to pass a disk reservation to bch2_extent_update()

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It's needed when we split an existing compressed extent - we get a null
ptr deref without it.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
This commit is contained in:
Kent Overstreet 2021-05-17 00:08:06 -04:00 committed by Kent Overstreet
parent 2cd0563461
commit 2e8f9d23cb
1 changed files with 5 additions and 1 deletions
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6
fs/bcachefs/reflink.c
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@ -2,6 +2,7 @@
#include "bcachefs.h"
#include "bkey_buf.h"
#include "btree_update.h"
#include "buckets.h"
#include "extents.h"
#include "inode.h"
#include "io.h"
@ -224,6 +225,8 @@ s64 bch2_remap_range(struct bch_fs *c,
BTREE_ITER_INTENT);
while (ret == 0 || ret == -EINTR) {
struct disk_reservation disk_res = { 0 };
bch2_trans_begin(&trans);
if (fatal_signal_pending(current)) {
@ -287,8 +290,9 @@ s64 bch2_remap_range(struct bch_fs *c,
dst_end.offset - dst_iter->pos.offset));
ret = bch2_extent_update(&trans, dst_iter, new_dst.k,
NULL, journal_seq,
&disk_res, journal_seq,
new_i_size, i_sectors_delta);
bch2_disk_reservation_put(c, &disk_res);
if (ret)
continue;