btrfs: send: use vmalloc only as fallback for send_buf
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index ec43379..b6e2c6e 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -6028,10 +6028,13 @@
sctx->clone_roots_cnt = arg->clone_sources_count;
sctx->send_max_size = BTRFS_SEND_BUF_SIZE;
- sctx->send_buf = vmalloc(sctx->send_max_size);
+ sctx->send_buf = kmalloc(sctx->send_max_size, GFP_KERNEL | __GFP_NOWARN);
if (!sctx->send_buf) {
- ret = -ENOMEM;
- goto out;
+ sctx->send_buf = vmalloc(sctx->send_max_size);
+ if (!sctx->send_buf) {
+ ret = -ENOMEM;
+ goto out;
+ }
}
sctx->read_buf = vmalloc(BTRFS_SEND_READ_SIZE);
@@ -6220,7 +6223,7 @@
fput(sctx->send_filp);
vfree(sctx->clone_roots);
- vfree(sctx->send_buf);
+ kvfree(sctx->send_buf);
vfree(sctx->read_buf);
name_cache_free(sctx);