From 2f91306a37809907474a06c1defdb1ff50be06f0 Mon Sep 17 00:00:00 2001 From: David Sterba Date: Mon, 11 Apr 2016 18:40:08 +0200 Subject: [PATCH] btrfs: send: use vmalloc only as fallback for clone_sources_tmp Signed-off-by: David Sterba --- fs/btrfs/send.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index 5a5d37b37150..6a8c86074aa4 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -6065,10 +6065,13 @@ long btrfs_ioctl_send(struct file *mnt_file, void __user *arg_) alloc_size = arg->clone_sources_count * sizeof(*arg->clone_sources); if (arg->clone_sources_count) { - clone_sources_tmp = vmalloc(alloc_size); + clone_sources_tmp = kmalloc(alloc_size, GFP_KERNEL | __GFP_NOWARN); if (!clone_sources_tmp) { - ret = -ENOMEM; - goto out; + clone_sources_tmp = vmalloc(alloc_size); + if (!clone_sources_tmp) { + ret = -ENOMEM; + goto out; + } } ret = copy_from_user(clone_sources_tmp, arg->clone_sources, @@ -6106,7 +6109,7 @@ long btrfs_ioctl_send(struct file *mnt_file, void __user *arg_) sctx->clone_roots[i].root = clone_root; clone_sources_to_rollback = i + 1; } - vfree(clone_sources_tmp); + kvfree(clone_sources_tmp); clone_sources_tmp = NULL; } @@ -6224,7 +6227,7 @@ out: btrfs_root_dec_send_in_progress(sctx->parent_root); kfree(arg); - vfree(clone_sources_tmp); + kvfree(clone_sources_tmp); if (sctx) { if (sctx->send_filp) -- 2.20.1