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btrfs: send: use vmalloc only as fallback for read_buf

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Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba
2016-04-11 18:40:08 +02:00
parent 6ff48ce06b
commit eb5b75fe2e
1 changed files with 7 additions and 4 deletions
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5
fs/btrfs/send.c
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@@ -6037,11 +6037,14 @@ long btrfs_ioctl_send(struct file *mnt_file, void __user *arg_)
} }
} }
sctx->read_buf = kmalloc(BTRFS_SEND_READ_SIZE, GFP_KERNEL | __GFP_NOWARN);
if (!sctx->read_buf) {
sctx->read_buf = vmalloc(BTRFS_SEND_READ_SIZE); sctx->read_buf = vmalloc(BTRFS_SEND_READ_SIZE);
if (!sctx->read_buf) { if (!sctx->read_buf) {
ret = -ENOMEM; ret = -ENOMEM;
goto out; goto out;
} }
}
sctx->pending_dir_moves = RB_ROOT; sctx->pending_dir_moves = RB_ROOT;
sctx->waiting_dir_moves = RB_ROOT; sctx->waiting_dir_moves = RB_ROOT;
@@ -6224,7 +6227,7 @@ out:
vfree(sctx->clone_roots); vfree(sctx->clone_roots);
kvfree(sctx->send_buf); kvfree(sctx->send_buf);
vfree(sctx->read_buf); kvfree(sctx->read_buf);
name_cache_free(sctx); name_cache_free(sctx);