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btrfs: send: use vmalloc only as fallback for send_buf 

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2016-04-11 18:40:08 +02:00
parent 779bf3fefa
commit 6ff48ce06b
1 changed files with 7 additions and 4 deletions
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11
fs/btrfs/send.c
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@ -6028,10 +6028,13 @@ long btrfs_ioctl_send(struct file *mnt_file, void __user *arg_)
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 @@ long btrfs_ioctl_send(struct file *mnt_file, void __user *arg_)
fput(sctx->send_filp);
vfree(sctx->clone_roots);
vfree(sctx->send_buf);
kvfree(sctx->send_buf);
vfree(sctx->read_buf);
name_cache_free(sctx);